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Louisiana State University
1.
Tang, Bixiang.
Parameter tuning and experimental results of power system stabilizer.
Degree: MSEE, Electrical and Computer Engineering, 2011, Louisiana State University
URL: etd-04152011-004352
;
https://digitalcommons.lsu.edu/gradschool_theses/2315 
► Power system stabilizers (PSS) have been studied for many years as a method to increase power system stability. This thesis focuses on the tuning and…
(more)
▼ Power system stabilizers (PSS) have been studied for many years as a method to increase power system stability. This thesis focuses on the tuning and structure of the power system stabilizer. Different types of power system stabilizers are reviewed. The one studied in this thesis is the integral of accelerated power stabilizer. The generator control system is introduced to illustrate the working environment of the PSS. The mathematic model of the generator, automatic voltage regulator and PSS are analyzed and the system transfer function in presence of the PSS is derived. Base on the transfer function, a new tuning method is introduced which does not require all the system parameters. It is an experiment based tuning method. Frequency response tests are at the core of the method. The feasibility of this tuning method is illustrated and verified for the real power system in the power control lab of the PCS2000 Company. Our experiments show that after tuning, system damping is increased and the oscillation is reduced that proves the effectiveness of our PSS tuning method.
Subjects/Keywords: PSS; POWER SYSTEM STABILIZER; POWER SYSTEM STABILITY
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APA (6th Edition):
Tang, B. (2011). Parameter tuning and experimental results of power system stabilizer. (Masters Thesis). Louisiana State University. Retrieved from etd-04152011-004352 ; https://digitalcommons.lsu.edu/gradschool_theses/2315
Chicago Manual of Style (16th Edition):
Tang, Bixiang. “Parameter tuning and experimental results of power system stabilizer.” 2011. Masters Thesis, Louisiana State University. Accessed February 26, 2021.
etd-04152011-004352 ; https://digitalcommons.lsu.edu/gradschool_theses/2315.
MLA Handbook (7th Edition):
Tang, Bixiang. “Parameter tuning and experimental results of power system stabilizer.” 2011. Web. 26 Feb 2021.
Vancouver:
Tang B. Parameter tuning and experimental results of power system stabilizer. [Internet] [Masters thesis]. Louisiana State University; 2011. [cited 2021 Feb 26].
Available from: etd-04152011-004352 ; https://digitalcommons.lsu.edu/gradschool_theses/2315.
Council of Science Editors:
Tang B. Parameter tuning and experimental results of power system stabilizer. [Masters Thesis]. Louisiana State University; 2011. Available from: etd-04152011-004352 ; https://digitalcommons.lsu.edu/gradschool_theses/2315
2.
Mashayekh, Salman.
An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems.
Degree: 2013, Texas Digital Library
URL: http://hdl.handle.net/1969;
http://hdl.handle.net/2249.1/66673
► Microgrid power systems draw lots of interests in marine, aerospace, and electric vehicle applications and are drawing increased attention for terrestrial applications. These power systems,…
(more)
▼ Microgrid
power systems draw lots of interests in marine, aerospace, and electric vehicle applications and are drawing increased attention for terrestrial applications. These
power systems, however, are prone to large frequency and voltage deviations, when disturbances happen. Therefore, an effective
power management method is needed to operate microgrids optimally, while satisfying operating and security constraints.
In this dissertation, a new Integrated Security-Constrained
Power Management (ISCPM) method is presented for isolated microgrid
power systems during normal/alert operating states. The new ISCPM method was formulated as a multi-objective optimal control problem, in which set-points of several
system control methods are minimally adjusted,
subject to operating and security constraints, over a period in the future. To solve the ISCPM multi-objective optimal control problem, an evolutionary algorithm based on the Nondominated Sorting GA II (NSGA-II) was developed, in which the optimization solver is linked to a fast simulation core. A fuzzy membership based method was developed to identify the best compromise solution.
The new
power management method was implemented on a notional computer model for an all-electric ship. The NSGA-II was developed in MATLAB, by adapting a general purpose GA toolbox, IlliGAL. To conduct transient simulations during the GA iterations, the simulation core of the TSAT Tool of Tools TM software package was used. The best compromise solution identification method was developed in MATLAB.
To illustrate how the new ISCPM method works in the notional all-electric ship model, several case studies were presented. Also, to evaluate the performance of the new ISCPM method, extensive studies were conducted. For these studies, a detailed electromagnetic transient model of the
system in PSCAD was used. The performance analysis addressed quality of the new method from
power system operation and multi-objective optimization perspectives. The results indicated that the new ISCPM method could effectively operate the
system in an overall near-optimal condition, in which security and operating constraints are also satisfied.
The application of the new
power management method is not limited to all-electric shipboard
power systems and it has great potential to be extended to other types of isolated microgrid
power systems.
Advisors/Committee Members: Butler-Purry, Karen L (advisor).
Subjects/Keywords: Isolated power system
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APA (6th Edition):
Mashayekh, S. (2013). An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66673
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mashayekh, Salman. “An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems.” 2013. Thesis, Texas Digital Library. Accessed February 26, 2021.
http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66673.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mashayekh, Salman. “An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems.” 2013. Web. 26 Feb 2021.
Vancouver:
Mashayekh S. An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66673.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mashayekh S. An Integrated Security-constrained Model-based Dynamic Power Management Approach for Isolated Microgrid Power Systems. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66673
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
3.
Lei, Hangtian.
Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems.
Degree: PhD, Electrical Engineering, 2016, Texas A&M University
URL: http://hdl.handle.net/1969.1/156807
► Cyber-induced failures affect power system reliability and thus are important to be considered in composite system reliability evaluation. This dissertation extends the scope of bulk…
(more)
▼ Cyber-induced failures affect
power system reliability and thus are important to be considered in composite
system reliability evaluation. This dissertation extends the scope of bulk
power system reliability modeling and analysis with the consideration of cyber elements.
A novel methodology by introducing the concept of Cyber-Physical Interface Matrix (CPIM) is proposed. The failure modes of cyber components and their impact on transmission line tripping behaviors are modeled and numerically analyzed as an example to illustrate the construction and utility of the CPIM. The methodology is then enhanced and implemented on an extended Roy Billinton Test
System (RBTS) with its applicability for large systems illustrated. The results clearly show the impact of cyber-induced failures on
system-wide reliability indices. The CPIM is the critical idea in the proposed methodology. It decouples the analysis of the cyber part from the physical part and provides the means of performing the overall analysis in a tractable fashion. The overall methodology proposed in this dissertation also provides a scalable option for reliability evaluation of large cyber-physical
power systems.
The efficiency of the overall methodology can be further improved with the use of non-sequential Monte Carlo techniques. However, the failure and repair processes in cyber-induced events are inherently sequential involving dependent failures, making it difficult to utilize non-sequential sampling methods as simply as when the components are independent. In this dissertation, the difficulties of using sampling when there are dependent failures are thoroughly explored. An approach is proposed to overcome the difficulties by generating a representative state space and its probabilities from which states can be sampled. The proposed approach not only preserves the sequential and dependent features of cyber-induced events but also improves the efficiency, which is very beneficial for reliability evaluation of large
power systems in the presence of cyber-induced dependent failures.
Advisors/Committee Members: Singh, Chanan (advisor), Xie, Le (committee member), Sprintson, Alexander (committee member), Butenko, Sergiy (committee member).
Subjects/Keywords: Power System; Reliability
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APA (6th Edition):
Lei, H. (2016). Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156807
Chicago Manual of Style (16th Edition):
Lei, Hangtian. “Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems.” 2016. Doctoral Dissertation, Texas A&M University. Accessed February 26, 2021.
http://hdl.handle.net/1969.1/156807.
MLA Handbook (7th Edition):
Lei, Hangtian. “Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems.” 2016. Web. 26 Feb 2021.
Vancouver:
Lei H. Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems. [Internet] [Doctoral dissertation]. Texas A&M University; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1969.1/156807.
Council of Science Editors:
Lei H. Reliability Modeling and Analysis of Cyber Enabled Electric Power Systems. [Doctoral Dissertation]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/156807
University of Nairobi
4.
Gikungi, Elephas K.
Design of a hybrid power system for a wireless communication tower system
.
Degree: 2015, University of Nairobi
URL: http://hdl.handle.net/11295/97290
► Telkom Kenya tower systems, especially those located in rough terrain, are currently powered by diesel generator sets. Diesel power generation is associated with several disadvantages…
(more)
▼ Telkom Kenya tower systems, especially those located in rough terrain, are currently powered by diesel generator sets. Diesel power generation is associated with several disadvantages which do not make it the best option. Generally, Kenya is blessed with Renewable Energy Resources (RES) which can be utilized at such towers to supply power. This study carried out measurements for wind speeds and solar insolation at Aitong, Narok site and compared these with data from secondary sources. A prototype Hybrid Powered System (HPS) was assembled and installed to record the actual RES available on site.
A HPS system was designed based on the data collected. The design process basically involved selecting the best combination of HPS system components based on their cost and power characteristics. Finally, the study compared the designed power system and the current online system at the site in terms of cost of implementation and running.
The actual on site data indicates that there is abundant RES at this site. The obtained data agrees well with data from the secondary sources consulted. The correlation is particularly close in the case of National Aeronautics and Space Administration (NASA) data. The system design optimization shows that a Net Present Cost (NPC) cost of KES 2.6 million against that of the current system of KES 21 million can be expected. The simulated Cost of Energy (COE) for the month of October is approximately Kenya Shillings (KES) 10/kWh which is better than that of Kenya Power and Lighting Company (KPLC) at KES 21/kWh over the same period
Subjects/Keywords: Hybrid Power System
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APA (6th Edition):
Gikungi, E. K. (2015). Design of a hybrid power system for a wireless communication tower system
. (Thesis). University of Nairobi. Retrieved from http://hdl.handle.net/11295/97290
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gikungi, Elephas K. “Design of a hybrid power system for a wireless communication tower system
.” 2015. Thesis, University of Nairobi. Accessed February 26, 2021.
http://hdl.handle.net/11295/97290.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gikungi, Elephas K. “Design of a hybrid power system for a wireless communication tower system
.” 2015. Web. 26 Feb 2021.
Vancouver:
Gikungi EK. Design of a hybrid power system for a wireless communication tower system
. [Internet] [Thesis]. University of Nairobi; 2015. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/11295/97290.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gikungi EK. Design of a hybrid power system for a wireless communication tower system
. [Thesis]. University of Nairobi; 2015. Available from: http://hdl.handle.net/11295/97290
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Manitoba
5.
Konara Mudiyanselage, Harshani Koushalya Konara.
Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation.
Degree: Electrical and Computer Engineering, 2015, University of Manitoba
URL: http://hdl.handle.net/1993/31030
► This thesis presents a method to do transient simulation of a large power system using dynamic phasors and electromagnetic transient simulation. A novel hybrid simulation…
(more)
▼ This thesis presents a method to do transient simulation of a large
power system using dynamic phasors and electromagnetic transient simulation. A novel hybrid simulation technique using dynamic phasor equivalent is presented to analyse a part of a large
power system. Electromagnetic transient simulation is used to model the part of the network that needs detailed simulation. The synchronous reference frame phase locked loop is implemented as the interface between the electromagnetic transient model and the dynamic phasor model. Two types of positive sequence filters i) sinusoidal signal integrator phase locked loop ii) extended phase locked loop are presented to eliminate the voltage unbalance effect in a phase locked loop. A comparison of the performance of the two filters is presented. The validation of the proposed interface is done using EMT simulation on real time digital simulator. Finally the numerical problems involved in this hybrid method are discussed.
Advisors/Committee Members: Annakkage, Udaya (Electrical & Computer Engineering) (supervisor), Filizadeh, Shaahin (Electrical & Computer Engineering) Karawita, Chandana (Electrical & Computer Engineering) Jayaraman, Raghavan (Mechanical & Manufacturing Engineering) (examiningcommittee).
Subjects/Keywords: Power system simulation
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APA (6th Edition):
Konara Mudiyanselage, H. K. K. (2015). Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31030
Chicago Manual of Style (16th Edition):
Konara Mudiyanselage, Harshani Koushalya Konara. “Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation.” 2015. Masters Thesis, University of Manitoba. Accessed February 26, 2021.
http://hdl.handle.net/1993/31030.
MLA Handbook (7th Edition):
Konara Mudiyanselage, Harshani Koushalya Konara. “Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation.” 2015. Web. 26 Feb 2021.
Vancouver:
Konara Mudiyanselage HKK. Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation. [Internet] [Masters thesis]. University of Manitoba; 2015. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1993/31030.
Council of Science Editors:
Konara Mudiyanselage HKK. Interfacing dynamic phasor based system equivalents to an electromagnetic transient simulation. [Masters Thesis]. University of Manitoba; 2015. Available from: http://hdl.handle.net/1993/31030
Georgia Tech
6.
Lateef, Omer G.
Measurement-based parameter estimation and analysis of power system.
Degree: PhD, Electrical and Computer Engineering, 2020, Georgia Tech
URL: http://hdl.handle.net/1853/63600
► Currently, power systems are modeled using the offline models of its components. The components’ models are derived during their design. Such an offline approach of…
(more)
▼ Currently,
power systems are modeled using the offline models of its components. The components’ models are derived during their design. Such an offline approach of modeling can result in an erroneous model of a
power system since it neglects any changes in the parameters of the components. The parameters of the components vary with the loading and atmospheric conditions. These variations can be taken into account if, instead of the offline models of the components, real-time measurements are used to derive a model of
power system. Various such measurement-based approaches have been used in the current study to estimate the bus admittance matrix and the bus impedance matrix of a
power system. From the estimated bus admittance matrix, the parameters and the topology of the
power system are derived. From the parameters, the condition of the components can be assessed. Moreover, a novel decentralized and distributed algorithm is used for the estimation of the bus impedance matrix. After the algorithm converges, the respective columns of the bus impedance matrix are available which can be used to update the settings of the relays. The relays set in such a way will better protect the
power system
Advisors/Committee Members: Habetler, Thomas G. (advisor), Molzahn, Daniel (committee member), Grijalva, Santiago C. (committee member), Graber, Lukas (committee member), Zhou , Haomin (committee member).
Subjects/Keywords: PMU; Power system
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APA (6th Edition):
Lateef, O. G. (2020). Measurement-based parameter estimation and analysis of power system. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/63600
Chicago Manual of Style (16th Edition):
Lateef, Omer G. “Measurement-based parameter estimation and analysis of power system.” 2020. Doctoral Dissertation, Georgia Tech. Accessed February 26, 2021.
http://hdl.handle.net/1853/63600.
MLA Handbook (7th Edition):
Lateef, Omer G. “Measurement-based parameter estimation and analysis of power system.” 2020. Web. 26 Feb 2021.
Vancouver:
Lateef OG. Measurement-based parameter estimation and analysis of power system. [Internet] [Doctoral dissertation]. Georgia Tech; 2020. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1853/63600.
Council of Science Editors:
Lateef OG. Measurement-based parameter estimation and analysis of power system. [Doctoral Dissertation]. Georgia Tech; 2020. Available from: http://hdl.handle.net/1853/63600
California State University – Sacramento
7.
Tania, Wahida.
Voltage stability analysis of electric power system.
Degree: MS, Electrical and Electronic Engineering, 2011, California State University – Sacramento
URL: http://hdl.handle.net/10211.9/974
► Voltage Stability is becoming an increasing source of concern in secure operation of present-day power systems. There is a need to perform studies to ensure…
(more)
▼ Voltage Stability is becoming an increasing source of concern in secure operation of present-day
power systems. There is a need to perform studies to ensure that the reliability of the
power system is not decreases as a result of unstable voltage. This project will analyze the voltage stability of a
system and mainly focuses on the identification of critical
power flow path, critical bus and critical line in a
power system
Advisors/Committee Members: Gonen, Turan.
Subjects/Keywords: Power system stability
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APA (6th Edition):
Tania, W. (2011). Voltage stability analysis of electric power system. (Masters Thesis). California State University – Sacramento. Retrieved from http://hdl.handle.net/10211.9/974
Chicago Manual of Style (16th Edition):
Tania, Wahida. “Voltage stability analysis of electric power system.” 2011. Masters Thesis, California State University – Sacramento. Accessed February 26, 2021.
http://hdl.handle.net/10211.9/974.
MLA Handbook (7th Edition):
Tania, Wahida. “Voltage stability analysis of electric power system.” 2011. Web. 26 Feb 2021.
Vancouver:
Tania W. Voltage stability analysis of electric power system. [Internet] [Masters thesis]. California State University – Sacramento; 2011. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10211.9/974.
Council of Science Editors:
Tania W. Voltage stability analysis of electric power system. [Masters Thesis]. California State University – Sacramento; 2011. Available from: http://hdl.handle.net/10211.9/974
University of Manitoba
8.
Wijeweera, Don Gayan Prabath.
Development of an equivalent circuit of a large power system for real- time security assessment.
Degree: Electrical and Computer Engineering, 2016, University of Manitoba
URL: http://hdl.handle.net/1993/31927
► More and more system operators are interested in calculating transfer capability in real-time using real-time power flow models generated from the Energy Management System (EMS).…
(more)
▼ More and more
system operators are interested in calculating transfer capability in real-time using real-time
power flow models generated from the Energy Management
System (EMS). However, compared to off-line study models, EMS models usually cover only a limited portion of the interconnected
system. In most situations, it is not practical to extend the EMS model to capture the impact of the external systems and therefore using an equivalent network becomes necessary.
The development of equivalent circuits to represent external areas was a topic discussed over the last 50 years. Almost all of these methods require impedance information about the external area to develop the equivalent circuit. Unfortunately utilities do not have the external impedance information in the real-time. Therefore, normal industry practice is to use off-line studies to develop an equivalent circuit and use that circuit in the real-time operation without any validation. This can result in errors in the security assessment. Therefore,
power industry need a method to develop or validate an equivalent circuit based on the available real-time information. This thesis work is focussed on meeting that industry need.
The work on this thesis presents two new methods that can be used to generate an equivalent circuit based on the boundary conditions. This method involves calculating equivalent impedance between two areas based on the boundary stations voltages, voltage angles and
power leaving the boundary stations into external areas.
This thesis uses
power system simulation between two areas to change the
system condition to obtain different boundary bus voltages, voltage angles and
power injections to generate necessary data. Regression analysis and least square method is then used to generate the equivalent circuit using these data. It is expected that
system changes will provide necessary information in the real-time to generate the equivalent circuit.
The proposed methodology is validated with modified three area 300 bus
system as well as using Manitoba Hydro’s
system. Contingency analysis, transfer level calcula-tion and PV curves analysis is used to validate the proposed method. Simulation results show that the proposed method produces adequate accuracy in comparison with detailed off-line
system models.
The main advantage of the proposed method as compared to other existing meth-ods such as Ward and REI is that the proposed method does not require external imped-ance information to generate the equivalent circuit. The ability to generate reasonably good equivalent circuit only using available boundary information will help utilities to generate or validate the equivalent circuit based on the current
system conditions, which will intern help improve the accuracy of the security assessment
Advisors/Committee Members: Annakkage, Udaya (Electrical and Computer Engineering) (supervisor), Rajapakse, Athula (Electrical and Computer Engineering).
Subjects/Keywords: Equivalent circuits; Power system interconnection; Power system security; Power system simulation; Power system analysis computing; Power system modelling; Phasor measurement units
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APA (6th Edition):
Wijeweera, D. G. P. (2016). Development of an equivalent circuit of a large power system for real- time security assessment. (Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/31927
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wijeweera, Don Gayan Prabath. “Development of an equivalent circuit of a large power system for real- time security assessment.” 2016. Thesis, University of Manitoba. Accessed February 26, 2021.
http://hdl.handle.net/1993/31927.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wijeweera, Don Gayan Prabath. “Development of an equivalent circuit of a large power system for real- time security assessment.” 2016. Web. 26 Feb 2021.
Vancouver:
Wijeweera DGP. Development of an equivalent circuit of a large power system for real- time security assessment. [Internet] [Thesis]. University of Manitoba; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1993/31927.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wijeweera DGP. Development of an equivalent circuit of a large power system for real- time security assessment. [Thesis]. University of Manitoba; 2016. Available from: http://hdl.handle.net/1993/31927
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Newcastle
9.
Zhang, Rui.
Advanced methods for power system security operations.
Degree: PhD, 2014, University of Newcastle
URL: http://hdl.handle.net/1959.13/1048178
► Research Doctorate - Doctor of Philosophy (PhD)
The fundamental role of an electrical power system is to deliver the requested electricity to customers in a…
(more)
▼ Research Doctorate - Doctor of Philosophy (PhD)
The fundamental role of an electrical power system is to deliver the requested electricity to customers in a secure and economical manner. In general, to realize the proper functionality of a modern power system, efforts should be devoted to operation and planning stages. This research focuses on the operation stage of power systems. Specifically, advanced methods are developed for three essential problems in power system security operation studies: 1) short-term load forecasting (STLF), 2) security-constrained optimal power flow (SCOPF), and 3) dynamic security assessment (DSA). Where the STLF is the basis for system operation, SCOPF aims to economically dispatch the system while satisfying the security constraints, and DSA focuses on the dynamic security issue of the power system. This research is carried out in a logic way to address the three problems. In the area of STLF, a model based on extreme learning machine (ELM) technique is first developed for the Australian National Electricity Market (NEM). The model is an ensemble of a series of strategically arranged individual ELMs. Compared with some existing methods, it is much faster in model training and can provide more accurate load forecasting results. After this, a composite k-nearest neighbor (kNN) model is developed to deal with the situation that limited temperature input is available. The model uses only the minimum and maximum temperature forecasts as the model input and can provide reasonably accurate load forecast results. At last, a hybrid model for time-varying reactive power load forecasting is developed. This model is among the first in filling the gap between the need for accurate reactive load forecast and current industrial practices which are mainly using a fixed power factor to derive the reactive load. The developed hybrid load forecasting model has been practically applied in a real-world distribution network in U.S. In the area of SCOPF, research efforts are firstly devoted to the corrective security-constrained optimal power flow (CSCOPF) problem. In contrast to traditional OPF models, the CSCOPF considers the use of corrective control (CC) actions to regain the system security in the post-contingency state, and is able to provide the same security level with more economical generator dispatching solutions over the conventional OPF models. This research develops a hybrid computational strategy to solve the much more complex CSCOPF problems. Besides of this, this research proposes a preventive-corrective SCOPF (PCSCOPF) model and corresponding solution method. The PCSCOPF aims to optimally coordinate the preventive control (PC) and CC against the probable contingencies during system operations. In the area of DSA, this research applies the intelligent system (IS) strategy which has been identified in recent years as a promising approach for much faster DSA. First, a comprehensive review and systematic classification of existing methods is conducted. Subsequently, for pre-disturbance DSA, a…
Advisors/Committee Members: University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science.
Subjects/Keywords: electric power system; power system security; power system stability; load forecasting; optimal power flow
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhang, R. (2014). Advanced methods for power system security operations. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1048178
Chicago Manual of Style (16th Edition):
Zhang, Rui. “Advanced methods for power system security operations.” 2014. Doctoral Dissertation, University of Newcastle. Accessed February 26, 2021.
http://hdl.handle.net/1959.13/1048178.
MLA Handbook (7th Edition):
Zhang, Rui. “Advanced methods for power system security operations.” 2014. Web. 26 Feb 2021.
Vancouver:
Zhang R. Advanced methods for power system security operations. [Internet] [Doctoral dissertation]. University of Newcastle; 2014. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/1959.13/1048178.
Council of Science Editors:
Zhang R. Advanced methods for power system security operations. [Doctoral Dissertation]. University of Newcastle; 2014. Available from: http://hdl.handle.net/1959.13/1048178
University of Texas – Austin
10.
Chirapongsananurak, Pisitpol.
Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis.
Degree: PhD, Electrical and Computer Engineering, 2016, University of Texas – Austin
URL: http://hdl.handle.net/2152/68247
► Power system phenomena can be characterized into three types according to their time scales. Firstly, electromagnetic transient phenomena, such as the effects of capacitor switching…
(more)
▼ Power system phenomena can be characterized into three types according to their time scales. Firstly, electromagnetic transient phenomena, such as the effects of capacitor switching and lightning strikes, have a time scale range of microseconds to milliseconds. Secondly, electromechanical transient phenomena, such as short-circuit faults on distribution circuits and inertial and frequency response of the
power system, have a time scale in the order of hundreds of milliseconds to tens of seconds. Lastly, quasi-steady-state phenomena, such as voltage regulation, voltage unbalance, and wind speed and solar irradiance variation, have a time scale of several minutes and longer. Currently, because the time scales of these phenomena vary greatly from fractions of cycles to a few hours, only
power system simulation tools for specific time scales are available.
The objective of this research is to develop an integrated distribution circuit multi-time-scale simulation tool designed specifically for applications in wind turbine and photovoltaic (PV) integration analysis. This research contributes a multi-time-scale simulation tool for analysis and control of voltage regulation due to the variability of wind speed, solar irradiance, and load consumption, determining the maximum penetration of wind turbines and PVs, and sizing of energy storage for peak load shaving and
power variability control.
The proposed multi-time-scale simulation tool developed in MATLAB includes several distribution circuit components such as voltage sources, distribution lines, transformers, loads, capacitor banks, wind turbines, and PVs. Each equipment model in the proposed simulation tool consists of three models in different time scales, i.e., steady-state, electromechanical transient, and electromagnetic transient models. Therefore, the proposed tool is able to perform a long-term simulation involving
power system phenomena spreading across time scales. Because distribution circuits are usually unbalanced, the proposed tool employs distribution circuit models with all three phases represented. The test circuit used to demonstrate the multi-time-scale simulation approach is the IEEE four-node test feeder with wind turbines and PVs connected at the feeder end. The results show that the proposed multi-time-scale simulation tool is able to simulate and analyze long-term
power system phenomena spreading across time scales.
Advisors/Committee Members: Santoso, Surya (advisor), Baldick, Ross (committee member), Hallock, Gary A (committee member), Kwasinski, Alexis (committee member), Longoria, Raul G (committee member).
Subjects/Keywords: Distributed power generation; Power system modeling; Power system simulation; Solar power generation; Wind power generation
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APA (6th Edition):
Chirapongsananurak, P. (2016). Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68247
Chicago Manual of Style (16th Edition):
Chirapongsananurak, Pisitpol. “Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed February 26, 2021.
http://hdl.handle.net/2152/68247.
MLA Handbook (7th Edition):
Chirapongsananurak, Pisitpol. “Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis.” 2016. Web. 26 Feb 2021.
Vancouver:
Chirapongsananurak P. Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/2152/68247.
Council of Science Editors:
Chirapongsananurak P. Distribution circuit multi-time-scale simulation tool for wind turbine and photovoltaic integration analysis. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/68247
University of Tasmania
11.
Al-Falahi, MDA.
Power management optimization of hybrid power systems for electric ferries.
Degree: 2019, University of Tasmania
URL: https://eprints.utas.edu.au/32579/1/Al_Falahi_whole_thesis_ex_pub_mat.pdf
;
https://eprints.utas.edu.au/32579/2/Al_Falahi_whole_thesis.pdf
;
Al-Falahi,
MDA
ORCID:
0000-0003-1951-4776
<https://orcid.org/0000-0003-1951-4776>
2019
,
'Power
management
optimization
of
hybrid
power
systems
for
electric
ferries',
PhD
thesis,
University
of
Tasmania.
► Ferries, which transport passengers, vehicles, and cargo, are encountering new opportunities and challenges in the transportation industry. In particular, fluctuations in the oil price and…
(more)
▼ Ferries, which transport passengers, vehicles, and cargo, are encountering new opportunities and challenges in the transportation industry. In particular, fluctuations in the oil price and strict emission regulations imposed by the International Maritime Organization and other governing bodies are the main concerns of the contemporary ferry industry. Therefore, the industry and academia are actively exploring avenues for emission reduction and fuel efficiency improvement.
Integration of more-electric technologies (METs), such as electric propulsion, into ferries has been identified as a promising approach to reduce emissions and operating cost. Further developments in the MET approach have decreased the fossil fuel-generated power on board ferries while renewable energy sources (RESs) such as fuel cells and solar cells are added to fill the gap. However, typical power levels and operating characteristic of these RESs do not meet load requirements in ferries and thus, battery energy storage has become an essential element in such hybrid systems to ensure reliable supply of power.
The presence of various sources and different types of loads, such as propulsion and service loads, make the ferry power system a complex network. Effective and efficient management of such a system to achieve the optimal use of available energy is inaccurate with traditional approaches. This gets further complicated with the presence of various constrains and operating requirements of each individual unit. Thus, advanced power management strategies are required to achieve optimal operation of future more-electric ferries.
This study aims to develop, evaluate, and compare the performance of classical and metaheuristic algorithm-based power management systems (PMSs) for hybrid power systems in short-haul electric ferries for fuel efficiency improvements and emission reductions. With the current trends in the industry, emission reduction and fuel efficiency improvement are taken as operational cost functions for the optimization. Moreover, reliability parameters such as safe operating region, available energy, and battery lifetime are taken as constraints in the optimization process. The developed PMSs should minimize the operational cost function and optimally manage the uncertainties of the short-haul ferry power system.
A simulation model of a direct current (DC) ferry power system is developed in MATLAB/Simulink to validate the developed PMSs. A DC distribution system is chosen in this study due to the fact that majority of energy storage technologies are DC systems. Moreover, drawbacks of alternating current (AC) distribution system such as harmonics, reactive power, and the need for synchronizations are not present in DC systems. In addition, the elimination of rectifier stage in variable speed drives reduces the power loss and cost. Therefore, future domestic ferry power systems will use DC distribution over AC. The developed model is simulated for different scenarios and validated with actual data measured from a short-haul domestic…
Subjects/Keywords: Power system; hybrid energy system; power optimization; battery storage system; transport electrification; ferry power system
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APA ·
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Export
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APA (6th Edition):
Al-Falahi, M. (2019). Power management optimization of hybrid power systems for electric ferries. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/32579/1/Al_Falahi_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/32579/2/Al_Falahi_whole_thesis.pdf ; Al-Falahi, MDA ORCID: 0000-0003-1951-4776 <https://orcid.org/0000-0003-1951-4776> 2019 , 'Power management optimization of hybrid power systems for electric ferries', PhD thesis, University of Tasmania.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Al-Falahi, MDA. “Power management optimization of hybrid power systems for electric ferries.” 2019. Thesis, University of Tasmania. Accessed February 26, 2021.
https://eprints.utas.edu.au/32579/1/Al_Falahi_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/32579/2/Al_Falahi_whole_thesis.pdf ; Al-Falahi, MDA ORCID: 0000-0003-1951-4776 <https://orcid.org/0000-0003-1951-4776> 2019 , 'Power management optimization of hybrid power systems for electric ferries', PhD thesis, University of Tasmania..
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Al-Falahi, MDA. “Power management optimization of hybrid power systems for electric ferries.” 2019. Web. 26 Feb 2021.
Vancouver:
Al-Falahi M. Power management optimization of hybrid power systems for electric ferries. [Internet] [Thesis]. University of Tasmania; 2019. [cited 2021 Feb 26].
Available from: https://eprints.utas.edu.au/32579/1/Al_Falahi_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/32579/2/Al_Falahi_whole_thesis.pdf ; Al-Falahi, MDA ORCID: 0000-0003-1951-4776 <https://orcid.org/0000-0003-1951-4776> 2019 , 'Power management optimization of hybrid power systems for electric ferries', PhD thesis, University of Tasmania..
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Al-Falahi M. Power management optimization of hybrid power systems for electric ferries. [Thesis]. University of Tasmania; 2019. Available from: https://eprints.utas.edu.au/32579/1/Al_Falahi_whole_thesis_ex_pub_mat.pdf ; https://eprints.utas.edu.au/32579/2/Al_Falahi_whole_thesis.pdf ; Al-Falahi, MDA ORCID: 0000-0003-1951-4776 <https://orcid.org/0000-0003-1951-4776> 2019 , 'Power management optimization of hybrid power systems for electric ferries', PhD thesis, University of Tasmania.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
12.
Larrañaga Arregui, Amaia (author).
Cost benefit analysis of different offshore grid topologies in the North.
Degree: 2017, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:a86eca4a-ce64-44ef-aa73-4183e9af761a
► European countries are showing their willingness to reduce their greenhouse gases emissions in the coming years. For example, the Paris agreement within the United Nations…
(more)
▼ European countries are showing their willingness to reduce their greenhouse gases emissions in the coming years. For example, the Paris agreement within the United Nations Framework Convention on Climate Change (UNFCCC) is one of the most crucial steps that countries have signed recently. The aim is to cause a lower global temperature increase, and thus, to reduce the resulting climate risks. North Sea countries are working on a greener future in a national level, as well; and these are in fact, the countries which are the most concerned about the climate change globally. Moreover, these are affluent in terms of opportunities for using greener energy sources, due to their climatic and geographic conditions. Clear examples are hydropower plants in the Nordic region or offshore-wind in the North Sea. Nevertheless, these countries need also of infrastructure to achieve their objectives, such as a Power System which will enable to integrate green generation sources properly and to satisfy the societies’ energy needs successfully. Power Systems are in fact, needed key enablers of this energy transition. The topic of this Master Thesis is transmission expansion planning in the North Sea for the year 2030. PowerGIM and PowerGAMA are used. The objective is to find the socio-economically beneficial grid design which will help achieve these future ambitions that the North Sea countries have and at the same time, which will be robust w.r.t. renewable energy sources’ development uncertainty. The main finding of this Master Thesis is that Dogger Bank hub is obtained as part of the most socio-economically beneficial offshore-grid layout for the year 2030, in all implemented scenarios. Each scenario refers to one implemented ENTSO-E Vision (Visions 1-4) with some additional assumptions. In short, in this Master Thesis, four different offshore-grid layouts are obtained, one per each implemented scenario; and all of them have the same core. The core is Dogger Bank hub’s interconnection with Great Britain, Belgium, Germany, Netherlands, Norway and Denmark. Nevertheless, there are some variations which depend on the implemented scenario and on the implemented assumptions. Overall, the obtained Dogger Bank hub could also integrate between 13-32 GW offshore-wind in the North Sea. Then, a reference grid layout is created, as well. This design embraces the previously mentioned four grid layouts in a conservative way, i.e. the repeated lines in all four obtained grid layouts are taken with the lowest capacity value among all four designs. The grid layout obtained after the implementation of the second scenario is the most robust grid layout w.r.t. different future energy prospects. Its operational cost saving throughout the lifetime of 30 years w.r.t. the reference grid layout is of 20-33 bn €, depending on the implemented future scenario; and the investment cost increase is of 5.5 bn € w.r.t. the reference grid layout.
BEST PATHS
European Wind Energy Master
Advisors/Committee Members: Rueda Torres, José L. (mentor), Farahmand, Hossein (mentor), van der Meijden, Mart (graduation committee), Ghaffarian Niasar, Mohamad (graduation committee), Delft University of Technology (degree granting institution), Norwegian University of Science and Technology (degree granting institution).
Subjects/Keywords: Power System Planning; Power Transmission; Power System Management; Power System Economics; Power System Modelling; Load Flow
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APA ·
Chicago ·
MLA ·
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Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Larrañaga Arregui, A. (. (2017). Cost benefit analysis of different offshore grid topologies in the North. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a86eca4a-ce64-44ef-aa73-4183e9af761a
Chicago Manual of Style (16th Edition):
Larrañaga Arregui, Amaia (author). “Cost benefit analysis of different offshore grid topologies in the North.” 2017. Masters Thesis, Delft University of Technology. Accessed February 26, 2021.
http://resolver.tudelft.nl/uuid:a86eca4a-ce64-44ef-aa73-4183e9af761a.
MLA Handbook (7th Edition):
Larrañaga Arregui, Amaia (author). “Cost benefit analysis of different offshore grid topologies in the North.” 2017. Web. 26 Feb 2021.
Vancouver:
Larrañaga Arregui A(. Cost benefit analysis of different offshore grid topologies in the North. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Feb 26].
Available from: http://resolver.tudelft.nl/uuid:a86eca4a-ce64-44ef-aa73-4183e9af761a.
Council of Science Editors:
Larrañaga Arregui A(. Cost benefit analysis of different offshore grid topologies in the North. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:a86eca4a-ce64-44ef-aa73-4183e9af761a
University of Minnesota
13.
Giacomoni, Anthony Michael.
Control and communication for a secure and reconfigurable power distribution system.
Degree: PhD, Electrical engineering, 2011, University of Minnesota
URL: http://purl.umn.edu/119331
► A major transformation is taking place throughout the electric power industry to overlay existing electric infrastructure with advanced sensing, communications, and control system technologies. This…
(more)
▼ A major transformation is taking place throughout the electric power industry to
overlay existing electric infrastructure with advanced sensing, communications, and
control system technologies. This transformation to a smart grid promises to enhance
system efficiency, increase system reliability, support the electrification of transportation,
and provide customers with greater control over their electricity consumption. Upgrading
control and communication systems for the end-to-end electric power grid, however, will
present many new security challenges that must be dealt with before extensive
deployment and implementation of these technologies can begin.
In this dissertation, a comprehensive systems approach is taken to minimize and
prevent cyber-physical disturbances to electric power distribution systems using sensing,
communications, and control system technologies. To accomplish this task, an intelligent
distributed secure control (IDSC) architecture is presented and validated in silico for
distribution systems to provide greater adaptive protection, with the ability to proactively
reconfigure, and rapidly respond to disturbances. Detailed descriptions of functionalities at each layer of the architecture as well as the whole system are provided.
To compare the performance of the IDSC architecture with that of other control
architectures, an original simulation methodology is developed. The simulation model
integrates aspects of cyber-physical security, dynamic price and demand response,
sensing, communications, intermittent distributed energy resources (DERs), and dynamic
optimization and reconfiguration. Applying this comprehensive systems approach, performance results for the IEEE 123 node test feeder are simulated and analyzed. The
results show the trade-offs between system reliability, operational constraints, and costs
for several control architectures and optimization algorithms. Additional simulation
results are also provided. In particular, the advantages of an IDSC architecture are
highlighted when an intermittent DER is present on the system.
Subjects/Keywords: Power Distribution System Communication; Power Distribution System Control; Power Distribution System Reconfiguration; Power Systems; Power System Security; Smart Grids; Electrical engineering
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APA (6th Edition):
Giacomoni, A. M. (2011). Control and communication for a secure and reconfigurable power distribution system. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/119331
Chicago Manual of Style (16th Edition):
Giacomoni, Anthony Michael. “Control and communication for a secure and reconfigurable power distribution system.” 2011. Doctoral Dissertation, University of Minnesota. Accessed February 26, 2021.
http://purl.umn.edu/119331.
MLA Handbook (7th Edition):
Giacomoni, Anthony Michael. “Control and communication for a secure and reconfigurable power distribution system.” 2011. Web. 26 Feb 2021.
Vancouver:
Giacomoni AM. Control and communication for a secure and reconfigurable power distribution system. [Internet] [Doctoral dissertation]. University of Minnesota; 2011. [cited 2021 Feb 26].
Available from: http://purl.umn.edu/119331.
Council of Science Editors:
Giacomoni AM. Control and communication for a secure and reconfigurable power distribution system. [Doctoral Dissertation]. University of Minnesota; 2011. Available from: http://purl.umn.edu/119331
University of Texas – Austin
14.
-7683-5336.
Data analytics applications to fault locations and overcurrent protection devices.
Degree: PhD, Electrical and Computer Engineering, 2019, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/3062
► Power quality (PQ) monitors installed in transmission and distribution systems record disturbance events occurring in the system, such as root mean square (RMS) variations and…
(more)
▼ Power quality (PQ) monitors installed in transmission and distribution systems record disturbance events occurring in the
system, such as root mean square (RMS) variations and transients caused by short-circuit faults, transformer energizing, or capacitor switching around the clock, resulting in a large amount of data. Although the collected data contain valuable information about the
system, they are often merely stored without any further analysis. Analysis of these data presents opportunities for improving the performance of
power systems as well as for monitoring the health of the grid as a whole. The general objective of this proposal is to develop algorithms that make use of three phase voltage and current measurements recorded from the
power quality monitors. Specifically, algorithms are developed for the analysis of (1) short circuit faults with their locations (fault analytics) and (2) overcurrent protection devices installed in the
system (device analytics). The fault analytics module is used to identify fault events among other
power quality events and estimates the location to the fault occurring in the
system. The proposed method uses variable window size in calculating phasors and estimates a single fault location that is more accurate than the multiple locations estimated by the conventional approach using Fourier and cosine filters. The device analytics module aims to evaluate the overcurrent protection devices operating to isolate short-circuit faults from the
system. This module identifies recloser and fuse operations and estimates the empirical inverse time-current characteristics of the devices. The results of the device analytics are used to evaluate device opening intervals and coordination and to further narrow down fault location because faults are located downstream from the clearing device. Finally, the dissertation presents a data analytics framework and an open
power quality disturbance event schema. The schema is developed to promote the sharing of data recording PQ disturbance events and the metadata providing descriptive and quantitative analysis of the events.
Advisors/Committee Members: Santoso, Surya (advisor), Baldick, Ross (committee member), Hallock, Gary (committee member), Arapostathis, Aristotle (committee member), Karadkar, Unmil (committee member).
Subjects/Keywords: Fault location; Power system faults; Power system measurements; Power system reliability; Power system protection; Power quality; Intelligent systems
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
-7683-5336. (2019). Data analytics applications to fault locations and overcurrent protection devices. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/3062
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Chicago Manual of Style (16th Edition):
-7683-5336. “Data analytics applications to fault locations and overcurrent protection devices.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed February 26, 2021.
http://dx.doi.org/10.26153/tsw/3062.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
MLA Handbook (7th Edition):
-7683-5336. “Data analytics applications to fault locations and overcurrent protection devices.” 2019. Web. 26 Feb 2021.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Vancouver:
-7683-5336. Data analytics applications to fault locations and overcurrent protection devices. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Feb 26].
Available from: http://dx.doi.org/10.26153/tsw/3062.
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Council of Science Editors:
-7683-5336. Data analytics applications to fault locations and overcurrent protection devices. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/3062
Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete
Delft University of Technology
15.
Van Ruitenbeek, E. (author).
Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study.
Degree: 2014, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:cffa6cde-faeb-47b9-9023-210778b0a0d2
► It is expected that the share of renewable energy sources will increase to meet rising demand. One of the challenges integrating this distributed generation (DG)…
(more)
▼ It is expected that the share of renewable energy sources will increase to meet rising demand. One of the challenges integrating this distributed generation (DG) into the power system is the behaviour of low voltage connected DG in case of a transmission system fault. This research aims to give recommendations for low voltage (LV) grid codes to improve system stability in case of transmission system faults in systems with very high penetration of distributed generation. The study horizon is 2022. A comprehensive benchmark system is designed, ranging from the low (400 V) to extra high (380 kV) voltage levels. Three distribution system types representative of Germany are developed. Positivesequence, root mean square stability simulations are performed for current (2012) and future (2022) scenarios in the commercial DIgSILENT PowerFactory 15.1 software. Sensitivity analyses are performed for pre-fault operating point and, for the 2022 scenario, the fault control mode of the low voltage connected photovoltaic systems. To reduce complexity of the test system and facilitate the simulations, the low voltage and medium voltage (20 kV) networks are aggregated. The research shows that LVRT requirements should be set for converter coupled DG in the low voltage network. Due to their high penetration, the loss of active power with current regulations is likely to cause major frequency stability issues in the future. Due to their low penetration and difficulties remaining transiently stable, no LVRT requirements should be posed for directly coupled synchronous generators that are connected inside a low voltage feeder. Those connected at a substation can ride through faults as long as they remain transiently stable.
Electrical Sustainable Energy
Sustainable Energy Technology
Applied Sciences
Advisors/Committee Members: Van der Meijden, M. (mentor), Rueda Torres, J.L. (mentor), Boemer, J.C. (mentor).
Subjects/Keywords: power system stability; photovoltaic power systems; power system modeling; distribution networks
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Van Ruitenbeek, E. (. (2014). Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:cffa6cde-faeb-47b9-9023-210778b0a0d2
Chicago Manual of Style (16th Edition):
Van Ruitenbeek, E (author). “Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study.” 2014. Masters Thesis, Delft University of Technology. Accessed February 26, 2021.
http://resolver.tudelft.nl/uuid:cffa6cde-faeb-47b9-9023-210778b0a0d2.
MLA Handbook (7th Edition):
Van Ruitenbeek, E (author). “Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study.” 2014. Web. 26 Feb 2021.
Vancouver:
Van Ruitenbeek E(. Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study. [Internet] [Masters thesis]. Delft University of Technology; 2014. [cited 2021 Feb 26].
Available from: http://resolver.tudelft.nl/uuid:cffa6cde-faeb-47b9-9023-210778b0a0d2.
Council of Science Editors:
Van Ruitenbeek E(. Impact of Large Amounts of Photovoltaic Installations in Low-Voltage Networks on Power System Stability During Transmission System Faults: A German Case Study. [Masters Thesis]. Delft University of Technology; 2014. Available from: http://resolver.tudelft.nl/uuid:cffa6cde-faeb-47b9-9023-210778b0a0d2
University of Saskatchewan
16.
Azinfar, Reza azinfar 1988-.
MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP.
Degree: 2019, University of Saskatchewan
URL: http://hdl.handle.net/10388/12110
► Power outages shut down facilities such as hospitals, shelters, and communication services. Each power system needs to be resilient to power outages. In a power…
(more)
▼ Power outages shut down facilities such as hospitals, shelters, and communication services. Each
power system needs to be resilient to
power outages. In a
power system, resilience can be achieved by infrastructure hardening; smart meter (AMI), energy storage, micro grid, renewable energy and accessibility of critical components. Most critical systems, such as hospitals, have a backup
power that is deiseal
power generator. The resilience of such a
power system refers to how a backup
power can still supply the critical load or base load for such critical systems when facing to the prime
power outage. This thesis studies how the resilience of such a
power system can be quantitatively measured and whether a combined diesel and solar backup
power can enhance the resilience of the entire
power system with an affordable cost. Specifically, the hospitals in Saskatoon were taken as a study vehicle. A literature review was conducted first, which revealed that there was no satisfactory quantitative measurement available in literature for the resilience of
power systems on the occasion of prime
power outages.
The overall objective of this thesis was thus to develop a quantitative measure for the resilience of
power systems with a backup
power when facing the prime
power outage. The problem is in essence about the reliability of the backup
power in the event of the prime grid
power is disrupted. A general measure for the resilience of the backup
power system (R for short), which can be multiple types of
power generators, was developed, which was dimensionless (i.e., independent of the scale of the
system). The measure was proved to be reasonable to the extreme cases (i.e., R=0, R=1). The use of the proposed measurement was illustrated for two situations of the backup
power: (i) the backup
power being a diesel
power generator only, and (ii) the backup
power being a combined diesel
power generator and solar panel. The situation (i) corresponds to the current situation of the backup
power in the hospitals in Saskatoon. The result shows that the resilience of the RUH (royal university hospital) is the highest one (R=70.5%) among the three hospitals in Saskatoon with the other two being SCH (Saskatoon City Hospital) and SPH (Saint Paul Hospital), and the resilience of SPH is the lowest one (R=54%). This result was in agreement with the experience of the managers of the hospitals.
The economics of the combined backup
power (diesel plus solar
power generators) was studied with the help of a software
system called SAM (
system advisor model). Specifically, the
power generated by and economic attributes of the solar panel of different sizes without battery storage were analyzed for the three hospitals, respectively. Note that the economic attributes are NPV (net present value) and payback time. The resilience of the combined backup
power was calculated for different sizes of solar panels with the help of SAM and the proposed measure. The optimal design, namely the size of solar panel, was obtained in terms of the resilience and…
Advisors/Committee Members: Ramakrishna , Gokaraju, Gupta, Madan, deters, Ralph, Zhang, w.j (Chris).
Subjects/Keywords: resilience measurement; power system; combined backup power
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APA (6th Edition):
Azinfar, R. a. 1. (2019). MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/12110
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Azinfar, Reza azinfar 1988-. “MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP.” 2019. Thesis, University of Saskatchewan. Accessed February 26, 2021.
http://hdl.handle.net/10388/12110.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Azinfar, Reza azinfar 1988-. “MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP.” 2019. Web. 26 Feb 2021.
Vancouver:
Azinfar Ra1. MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP. [Internet] [Thesis]. University of Saskatchewan; 2019. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10388/12110.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Azinfar Ra1. MEASUREMENT AND ENHANCEMENT OF THE RESILIENCE OF POWER SYSTEMS WITH A COMBINED DIESEL AND SOLAR POWER BACKUP. [Thesis]. University of Saskatchewan; 2019. Available from: http://hdl.handle.net/10388/12110
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Johannesburg
17.
Swart, Sarica Meyer.
Aspects of the ratio of reactive to real powers as input to transmission network control.
Degree: 2012, University of Johannesburg
URL: http://hdl.handle.net/10210/4838
► D.Ing.
Transmission networks change continuously when new supply requests are made, network reinforcements are installed and equipment configuration changes. Therefore, network design, operation and control…
(more)
▼ D.Ing.
Transmission networks change continuously when new supply requests are made, network reinforcements are installed and equipment configuration changes. Therefore, network design, operation and control requirements change. To manage this, controllers are being developed to assist human network controllers who might not always be specialists in equipment operation and characteristics. A transmission network comprises multiple variables, some dependent on others. The resistive portion of a load (PLoad) and the total reactive power (Q) installed close to the load can be set in relation to each other. This relationship forms the basic concept of the QP ratio for a transmission network. This ratio is not standardly used as a variable in network operation or control. This thesis explores this new QP ratio in more depth for application in different networks. This concept is developed and investigated in detail and equations are derived from first principles. The usability of the QP ratio is described and calculations are done for existing networks. It is shown that each network has its own unique QP ratio that can be used as information for human operators or as part of a controller device. This information can assist in determining actions required to be taken by controllers and operators. This thesis investigates aspects related to the use of a QP ratio in transmission networks as far as system operation and network control is concerned. The information provided in this thesis could be developed further to assist in implementing of the QP ratio in transmission network control rooms or systems. This will contribute to the provision of more reliable, robust and controlled electrical networks.
Subjects/Keywords: Electric power transmission; Electric power system stability
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APA (6th Edition):
Swart, S. M. (2012). Aspects of the ratio of reactive to real powers as input to transmission network control. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/4838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Swart, Sarica Meyer. “Aspects of the ratio of reactive to real powers as input to transmission network control.” 2012. Thesis, University of Johannesburg. Accessed February 26, 2021.
http://hdl.handle.net/10210/4838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Swart, Sarica Meyer. “Aspects of the ratio of reactive to real powers as input to transmission network control.” 2012. Web. 26 Feb 2021.
Vancouver:
Swart SM. Aspects of the ratio of reactive to real powers as input to transmission network control. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10210/4838.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Swart SM. Aspects of the ratio of reactive to real powers as input to transmission network control. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/4838
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Johannesburg
18.
Swart, Sarica Meyer.
Aspects of the ratio of reactive to real powers as input to transmission network control.
Degree: 2014, University of Johannesburg
URL: http://hdl.handle.net/10210/9483
► M.Ing. (Electrical Engineering)
Induction heating has been used in practice for many years. The main goal of this study is to investigate the use of…
(more)
▼ M.Ing. (Electrical Engineering)
Induction heating has been used in practice for many years. The main goal of this study is to investigate the use of a single-turn coil in a typical induction heater. The work starts off with a background study of elecrroheat and specifically high-frequency induction heating. Finite element simulations were conducted on different coil shapes and compared with each other. The converter. with control and driver circuits. used in the, experimental setup, as well as the experimental construction and results are described. The work is concluded with an evaluation of the project.
Subjects/Keywords: Electric power system stability; Electric power transmission
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Swart, S. M. (2014). Aspects of the ratio of reactive to real powers as input to transmission network control. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/9483
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Swart, Sarica Meyer. “Aspects of the ratio of reactive to real powers as input to transmission network control.” 2014. Thesis, University of Johannesburg. Accessed February 26, 2021.
http://hdl.handle.net/10210/9483.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Swart, Sarica Meyer. “Aspects of the ratio of reactive to real powers as input to transmission network control.” 2014. Web. 26 Feb 2021.
Vancouver:
Swart SM. Aspects of the ratio of reactive to real powers as input to transmission network control. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10210/9483.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Swart SM. Aspects of the ratio of reactive to real powers as input to transmission network control. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/9483
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Victoria University of Wellington
19.
Alzaanin, Hatem I.
The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand.
Degree: 2014, Victoria University of Wellington
URL: http://hdl.handle.net/10063/4381
► The substantial penetration of wind power introduces increased flexibility requirements on the power system and puts increased pressure on the instantaneous reserve levels required. Instantaneous…
(more)
▼ The substantial penetration of wind
power introduces increased flexibility requirements on the
power system and puts increased pressure on the instantaneous reserve levels required. Instantaneous reserves are a security product that ensures that electricity demand can continue to be met in the event of unplanned generation or transmission interruptions. This reserve must be available to respond very quickly to generation-demand variability. While this is an integral component of the
power system, providing instantaneous reserve increases the production cost of
power. More calls from energy researchers and stakeholders ask for loads to play an increasingly important role in balancing the short timescale fluctuations in generated wind
power. The purpose of this study is to assess the current level of demand responsiveness among domestic refrigerators, freezers, and water heaters and their potential to contribute towards instantaneous reserve and balance the fluctuation of wind. Refrigerators, freezers, and water heaters can generally store energy due to their thermal mass. Interrupting these domestic loads for short time by employing direct load control strategies makes it possible to control these appliances by turning them on or off before their reach their maximum or minimum temperatures or by slightly modifying their temperature set point. Using this strategy helps to ensure that the overall satisfaction of consumers should not be affected. This study first modelled the load profiles of the participated residential appliances and statistically assessed the potential of controlling these residential loads using direct load control strategies to contribute towards instantaneous reserves to mitigate and balance the fluctuation of wind
power in the years: 2014, 2020 and 2030. In the second section, it demonstrated the capabilities of the assessed residential responsive loads within Wellington Region network to compensate for and balance the fluctuation of wind
power generated from the West Wind Farm in seven selected days in 2013-2014 as a showcase. Such technology can enable a
power system operator to remove the burden of both providing instantaneous reserve from conventional sources, and instead maintain such capacity from available residential demand response. The study ends with recommendations to engage residential loads in fast timescale demand response and suggests directions for future research.
Advisors/Committee Members: Rayudu, Ramesh.
Subjects/Keywords: Demand response; Wind power; Power system
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CSE |
Export
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Manager
APA (6th Edition):
Alzaanin, H. I. (2014). The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/4381
Chicago Manual of Style (16th Edition):
Alzaanin, Hatem I. “The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand.” 2014. Masters Thesis, Victoria University of Wellington. Accessed February 26, 2021.
http://hdl.handle.net/10063/4381.
MLA Handbook (7th Edition):
Alzaanin, Hatem I. “The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand.” 2014. Web. 26 Feb 2021.
Vancouver:
Alzaanin HI. The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand. [Internet] [Masters thesis]. Victoria University of Wellington; 2014. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10063/4381.
Council of Science Editors:
Alzaanin HI. The Potential of Utilising Residential Demand Response to Balance the Fluctuation of Wind Power in New Zealand. [Masters Thesis]. Victoria University of Wellington; 2014. Available from: http://hdl.handle.net/10063/4381
20.
Ahmed, Miyada.
An exiplicit damping sensitivity expression for power system stabilizers applications in power systems.
Degree: 2017, University of Tennessee – Chattanooga
URL: https://scholar.utc.edu/theses/519
► Interconnected power systems are subject to low frequency oscillations. These oscillations, if poorly damped, threaten the stability of the system and limit its power transfer…
(more)
▼ Interconnected
power systems are
subject to low frequency oscillations. These oscillations, if poorly damped, threaten the stability of the
system and limit its
power transfer capability.
Power System Stabilizers (PSS) are widely used to enhance the damping of electromechanical oscillatory modes.
Conventional methods to tune
power system stabilizers attempt to provide the required magnitude/phase shift compensation through frequency response or mode sensitivity analysis. However, these methods do not operate directly on the damping sensitivity of the mode.
A novel method to calculate the damping sensitivity has been developed in this work. It operates on mode damping directly to achieve optimum damping for the under-damped oscillatory modes. The proposed method has been used to tune simple stabilizers for the well-known two-area four-machine
power system problem and the IEEE9-Bus
system. It is compared with results obtained from complex and robust PSS designs, and found to offer comparable outcomes.
Advisors/Committee Members: Eltom, Ahmed H., Karrar, Abdelrahman A., Kobet, Gary L., College of Engineering and Computer Science.
Subjects/Keywords: Electric power systems; Electric power system stability
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ahmed, M. (2017). An exiplicit damping sensitivity expression for power system stabilizers applications in power systems. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/519
Chicago Manual of Style (16th Edition):
Ahmed, Miyada. “An exiplicit damping sensitivity expression for power system stabilizers applications in power systems.” 2017. Masters Thesis, University of Tennessee – Chattanooga. Accessed February 26, 2021.
https://scholar.utc.edu/theses/519.
MLA Handbook (7th Edition):
Ahmed, Miyada. “An exiplicit damping sensitivity expression for power system stabilizers applications in power systems.” 2017. Web. 26 Feb 2021.
Vancouver:
Ahmed M. An exiplicit damping sensitivity expression for power system stabilizers applications in power systems. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2017. [cited 2021 Feb 26].
Available from: https://scholar.utc.edu/theses/519.
Council of Science Editors:
Ahmed M. An exiplicit damping sensitivity expression for power system stabilizers applications in power systems. [Masters Thesis]. University of Tennessee – Chattanooga; 2017. Available from: https://scholar.utc.edu/theses/519
21.
Mohammed, Enass.
Investigation of a new method for synchronous generator loss of excitation protection.
Degree: 2017, University of Tennessee – Chattanooga
URL: https://scholar.utc.edu/theses/520
► ABSTRACT Synchronous generator loss of field can compromise both generator and power grid stability and therefore must be quickly detected. In this thesis, a new…
(more)
▼ ABSTRACT
Synchronous generator loss of field can compromise both generator and
power grid stability and therefore must be quickly detected.
In this thesis, a new proposed method for LOF detection has been further explored and its shortcomings corrected.The detection index has been calculated based on these new modifications. The modifications include a more robust delta estimation technique and a removal of a required algorithm condition. Two methods are used to estimate the rotor angle and bothprovide a similar estimation. The first method depends on the integration of the rotor speed over time, while the second method is based on equations presented in a published paper.
Moreover, the algorithm was tested on both a 2-bus
system and the IEEE 9-bus
system to investigate the detection time, security and reliability of the proposed method.
The simulation model wasbuiltusing a Real Time Digital Simulator (RTDS) to simulate generator loss of excitation on a 2-bus and 9-bus
system. The algorithm was then tested under various operating conditions (normal
system conditions and disturbances). The advantages and drawbacks of the proposed algorithm are discussed in the thesis.
Advisors/Committee Members: Eltom, Ahmed H., Karrar, Abdelrahman A., Kobet, Gary L., College of Engineering and Computer Science.
Subjects/Keywords: Electric power systems; Electric power system stability
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APA ·
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mohammed, E. (2017). Investigation of a new method for synchronous generator loss of excitation protection. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/520
Chicago Manual of Style (16th Edition):
Mohammed, Enass. “Investigation of a new method for synchronous generator loss of excitation protection.” 2017. Masters Thesis, University of Tennessee – Chattanooga. Accessed February 26, 2021.
https://scholar.utc.edu/theses/520.
MLA Handbook (7th Edition):
Mohammed, Enass. “Investigation of a new method for synchronous generator loss of excitation protection.” 2017. Web. 26 Feb 2021.
Vancouver:
Mohammed E. Investigation of a new method for synchronous generator loss of excitation protection. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2017. [cited 2021 Feb 26].
Available from: https://scholar.utc.edu/theses/520.
Council of Science Editors:
Mohammed E. Investigation of a new method for synchronous generator loss of excitation protection. [Masters Thesis]. University of Tennessee – Chattanooga; 2017. Available from: https://scholar.utc.edu/theses/520
Louisiana State University
22.
Toups, Tracy Nakamura.
Working active power, reflected active power, and detrimental active power in the power system.
Degree: MSEE, Electrical and Computer Engineering, 2011, Louisiana State University
URL: etd-11082011-131922
;
https://digitalcommons.lsu.edu/gradschool_theses/2716
► Study of decomposition of the active power into components with deeper economical meanings, namely working active power, reflected active power, and detrimental active power is…
(more)
▼ Study of decomposition of the active power into components with deeper economical meanings, namely working active power, reflected active power, and detrimental active power is the subject of the thesis. The decomposition of active power will be based on the Current’s Physical Component (CPC) Theory. Working active power is equivalent to useful power that is the rate of energy used to do work, such as mechanical power. Reflected active power is the rate of energy transfer that the load sends back to the supply which dissipates off the supply resistance. This reflected active power is not taken into account on traditional power meters and the utility is not compensated for the power sent to the load to generate the reflected active power. Detrimental active power is the power that the supply sends to the load that is not considered useful power. The traditional power meter takes into account detrimental active power and the customer is paying for power that does not convert to useful work and potentially harming equipment. Working active power shows that the standard definition for active power does not fully take into account all economical responsibilities. With active power decomposed into economical components, the economic responsibilities can be accounted to the correct party.
Subjects/Keywords: Power Theory; Energy; Power System; CPC
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Export
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Manager
APA (6th Edition):
Toups, T. N. (2011). Working active power, reflected active power, and detrimental active power in the power system. (Masters Thesis). Louisiana State University. Retrieved from etd-11082011-131922 ; https://digitalcommons.lsu.edu/gradschool_theses/2716
Chicago Manual of Style (16th Edition):
Toups, Tracy Nakamura. “Working active power, reflected active power, and detrimental active power in the power system.” 2011. Masters Thesis, Louisiana State University. Accessed February 26, 2021.
etd-11082011-131922 ; https://digitalcommons.lsu.edu/gradschool_theses/2716.
MLA Handbook (7th Edition):
Toups, Tracy Nakamura. “Working active power, reflected active power, and detrimental active power in the power system.” 2011. Web. 26 Feb 2021.
Vancouver:
Toups TN. Working active power, reflected active power, and detrimental active power in the power system. [Internet] [Masters thesis]. Louisiana State University; 2011. [cited 2021 Feb 26].
Available from: etd-11082011-131922 ; https://digitalcommons.lsu.edu/gradschool_theses/2716.
Council of Science Editors:
Toups TN. Working active power, reflected active power, and detrimental active power in the power system. [Masters Thesis]. Louisiana State University; 2011. Available from: etd-11082011-131922 ; https://digitalcommons.lsu.edu/gradschool_theses/2716
University of Alberta
23.
Tian, Yu.
An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications.
Degree: MS, Department of Electrical and Computer
Engineering, 2014, University of Alberta
URL: https://era.library.ualberta.ca/files/2b88qd37f
► Shunt capacitors are widely used in power systems for voltage support and reactive power compensation. Its applications, however, can also cause various problems. This thesis…
(more)
▼ Shunt capacitors are widely used in power systems for
voltage support and reactive power compensation. Its applications,
however, can also cause various problems. This thesis presents a
comprehensive investigation of the power quality issues associated
with shunt capacitor applications. Switching of shunt capacitors
can cause severe transient overvoltage. This thesis first develops
a frequency-domain method to simulate the transients. Then, the
relationship between three-phase capacitor switching instants and
transient voltage peak is analytically studied. The worst-case
switching transient is determined accordingly through a systematic
searching from a series of transient simulations. Finally, a
transfer impedance ranking technique is proposed to effectively
identify the most critical buses in capacitor switching.
Additionally, shunt capacitors excite resonant conditions that can
magnify harmonic levels. One detrimental consequence could be the
overloading of capacitors. This thesis establishes a suite of
indices that can effectively quantify capacitor loading condition
and the impact of harmonics on capacitor loading.
Subjects/Keywords: Power System; Capacitor; Switching Transients
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Export
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Manager
APA (6th Edition):
Tian, Y. (2014). An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/2b88qd37f
Chicago Manual of Style (16th Edition):
Tian, Yu. “An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications.” 2014. Masters Thesis, University of Alberta. Accessed February 26, 2021.
https://era.library.ualberta.ca/files/2b88qd37f.
MLA Handbook (7th Edition):
Tian, Yu. “An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications.” 2014. Web. 26 Feb 2021.
Vancouver:
Tian Y. An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications. [Internet] [Masters thesis]. University of Alberta; 2014. [cited 2021 Feb 26].
Available from: https://era.library.ualberta.ca/files/2b88qd37f.
Council of Science Editors:
Tian Y. An Investigation of Power Quality Issues Associated With
Shunt Capacitor Applications. [Masters Thesis]. University of Alberta; 2014. Available from: https://era.library.ualberta.ca/files/2b88qd37f
Anna University
24.
Hemalatha S.
Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;.
Degree: shortest path finding algorithms with a multi agent
approach for power system restoration, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/23576
► Power system restoration following a partial or total blackout is one newlineof the most important tasks for power system operators It is a complex newlineprocess…
(more)
▼ Power system restoration following a partial or
total blackout is one newlineof the most important tasks for power
system operators It is a complex newlineprocess that restores the
system back to normal after an extensive outage of newlinethe
system Due to a combination of unforeseen circumstances there is a
newlineremote possibility of a system wide outage and it is very
important not only newlineto minimize power failure but also
restore the power system network quickly newlineand safely During
this stressful situation to reduce shortage of power newlinesupply
proper switching of power lines is required The efficient switching
newlineoperations require the identification of optimal path for
the power flow in the newlinenetwork A thriving restorative path
search guidance tool will be a welcome newlineadvantage The
objective of this work is to reconfigure the de energized
newlinenetwork by maximizing the amount of power restored through
the optimal path newline newline
Reference p.150-156
Advisors/Committee Members: Valsalal P.
Subjects/Keywords: electrical engineering; Integration; power system
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Manager
APA (6th Edition):
S, H. (2014). Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/23576
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
S, Hemalatha. “Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;.” 2014. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/23576.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
S, Hemalatha. “Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;.” 2014. Web. 26 Feb 2021.
Vancouver:
S H. Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/23576.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
S H. Integration of the shortest path finding algorithms with
a multi agent approach for power system restoration;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/23576
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Anna University
25.
Hari kumar naidu.
Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;.
Degree: Power system reliability performance
improvement, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/23578
► The loss of power supply to the consumers can be reduced by focusing newlineon the two major areas of concern in the power system These…
(more)
▼ The loss of power supply to the consumers can be
reduced by focusing newlineon the two major areas of concern in the
power system These areas are newlineclassified as the short term
load forecasting centric and sub station newlineconfiguration
centric The major focus in this dissertation is to develop a new
newlineapproach for the short term load forecasting using
Supervisory Control and newlineData Acquisition SCADA system to
improve the load forecast A hybrid newlinealgorithm is developed by
investigating statistical correlation between newlinehistorical and
the present day actual demand The present day initial demand
newlineforecast is arrived by estimating the maximum and the
minimum weather newlinebased demand profile of the last twenty five
months The forecasting newlineminimum and maximum demands are user
point which depends on weather newlinespecific historical demand
and also the power transactions taking place with newlinethe
available generation capacity for the day Thus, it has facilitated
in newlinematching the estimated demand with the actual demand The
correlation newlinecoefficient is calculated and its probable error
in forecasting are estimated newlinewhich are satisfactory newline
newline
Reference P.107-114
Advisors/Committee Members: Thanushkodi K.
Subjects/Keywords: electrical engineering; forecasting; Power system
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APA (6th Edition):
naidu, H. k. (2014). Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/23578
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
naidu, Hari kumar. “Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;.” 2014. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/23578.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
naidu, Hari kumar. “Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;.” 2014. Web. 26 Feb 2021.
Vancouver:
naidu Hk. Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/23578.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
naidu Hk. Power system reliability performance improvement using
scada short term load forecasting and successful path method for
substation configuration studies;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/23578
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Manchester
26.
Tumelo-Chakonta, Chomba.
The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability.
Degree: 2015, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:260770
► According to the European Network of Transmission System Operators for Electricity (ENTSO-E) there is a need to invest 104 billion Euros to either refurbish or…
(more)
▼ According to the European Network of Transmission
System Operators for Electricity (ENTSO-E) there is a need to
invest 104 billion Euros to either refurbish or construct overhead
lines (OHLs). This massive enterprise is mainly driven by the need
to accommodate the proliferation of renewable energy generation
projects across Europe in response to the European Commission’s
directive to supply 20% of its energy from renewables by the year
2020. However, 30% of transmission projects experience delays; and
moreover, it has been found that if the existing grid capacity is
to be increased by about 1.3% it would facilitate about 3% of
renewables. Therefore, attention towards the thermal uprating of
existing networks has attracted research interest. In this thesis,
the main contribution to this research is a probabilistic and
holistically integrated
system and OHL plant reliability centred
thermal uprating evaluation methodology. This methodology is
designed to aid the facilitation of the thermal uprating’s of
existing lines, through a variety of multistage and multifaceted
risk based decisions. These multifaceted aspects are
subject to the
conflicting views to thermal uprating which stem from various
utility personnel; which further stem from their constricted views
on
system reliability. For example, plant maintainers may resist
thermal uprating because it may require the need to increase
maintenance works on right-of-ways, or because they may need to
prevent conductors from ageing sooner than initially projected.
However, restricting thermal uprating for these reasons will limit
the capability of the
system to facilitate renewables, and this
will negatively affect overall
system reliability. Therefore, the
presented methodology aids to facilitate highly efficient
interdependent decision making amongst plant designers and
maintainers, and
system planners and operators, to effectively
manage thermal uprating risks in consideration to the overall
utility’s goals. This thesis implements a variety of studies to
enlighten utility personnel of the possible economic benefits and
risk mitigation practices that could be realised through thermal
uprating. To present robustly conclusive and compelling results,
these studies research the value of thermal uprating from three
possible time scales: long-, medium- and short-term time domains.
Consequently, planners (through this methodology) will for the
first time ascertain the true value of (1) uprating existing
conductors by accepting the subsequent acceleration of their
ageing, (2) selecting the optimal reconductoring technology from a
suite of candidate (conventional and novel) conductor technologies,
(3) the retensioning policy to implement (at a particular stage of
a project) in order to maintain reliability, and (4) novel
real-time OHL ageing management tools for
power system operators to
use reliably.
Advisors/Committee Members: Kopsidas, Konstantinos.
Subjects/Keywords: Power System Reliability; Thermal Rating
Record Details
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tumelo-Chakonta, C. (2015). The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:260770
Chicago Manual of Style (16th Edition):
Tumelo-Chakonta, Chomba. “The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability.” 2015. Doctoral Dissertation, University of Manchester. Accessed February 26, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:260770.
MLA Handbook (7th Edition):
Tumelo-Chakonta, Chomba. “The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability.” 2015. Web. 26 Feb 2021.
Vancouver:
Tumelo-Chakonta C. The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability. [Internet] [Doctoral dissertation]. University of Manchester; 2015. [cited 2021 Feb 26].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:260770.
Council of Science Editors:
Tumelo-Chakonta C. The Value and Risk of Probabilistic Thermal Uprating
Scenarios on Power System Reliability. [Doctoral Dissertation]. University of Manchester; 2015. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:260770
Anna University
27.
Easwarlal C.
Two variable approach for optimum design of a
distribution transformer.
Degree: Power System, 2013, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/9784
► In Power Systems, distribution transformers are found in large numbers at the consumer end. The transformers are generally to satisfy one of the objectives, viz.…
(more)
▼ In Power Systems, distribution transformers are
found in large numbers at the consumer end. The transformers are
generally to satisfy one of the objectives, viz. cost, weight,
volume or losses depending upon the need of the consumer and their
circumstances to be minimum or optimum. The transformer may be said
accordingly as optimum cost, weight, volume or loss transformer.
The above objectives are governed by many variables. It is the
general practice that some variables are assumed as known and fixed
and other variables are treated as independent or free variables.
The optimization is finding optimum values for these independent
variables and making the objective optimum or minimum. Hence it is
difficult to arrive at an optimum design. At the same time, in
computer based optimizing method, the steps involved are (i)
synthesis (ii) analysis and (iii) an optimizing routine. In this
method the optimum value of a variable, which appear in design
equation, is achieved, which in turn is used to minimize or
maximize a quantity of interest in the calculation subsequently.
The transformer is made up of basically iron and copper. The
objectives indicated above are directly related to iron and copper.
The transformer is supposed to deliver its rated kVA as output and
so the output of the transformer itself is taken as constraint. It
is therefore necessary that the output equation is to be modified
substituting the known values for the variables in the equation and
finally obtaining an equation in terms of two variables as they
appear in the objective function. Thus the objective function and
constraint equation are formed only with the help of two variables
depending upon the objective in mind, where the requirements for
any optimizing problem are fulfilled. Voltage regulation is
calculated from the results obtained by the proposed method and
presented. A new algorithm for overall optimum design of a
distribution transformer is presented using two variable
approach.
Appendix p. 92-123
Advisors/Committee Members: Palanisamy V.
Subjects/Keywords: Power system; Voltage regulations; Harmonics
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APA ·
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Export
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Manager
APA (6th Edition):
C, E. (2013). Two variable approach for optimum design of a
distribution transformer. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/9784
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
C, Easwarlal. “Two variable approach for optimum design of a
distribution transformer.” 2013. Thesis, Anna University. Accessed February 26, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/9784.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
C, Easwarlal. “Two variable approach for optimum design of a
distribution transformer.” 2013. Web. 26 Feb 2021.
Vancouver:
C E. Two variable approach for optimum design of a
distribution transformer. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Feb 26].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9784.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
C E. Two variable approach for optimum design of a
distribution transformer. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/9784
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Saskatchewan
28.
Wheeler, Keaton A 1990-.
MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS.
Degree: 2018, University of Saskatchewan
URL: http://hdl.handle.net/10388/11642
► This thesis presents novel schemes and techniques to overcome the difficulties associated with the integration of distributed generation (DG) and microgrids in the context of…
(more)
▼ This thesis presents novel schemes and techniques to overcome the difficulties associated with the integration of distributed generation (DG) and microgrids in the context of existing short circuit characteristics and protection infrastructure adequacy. One such inadequacy is associated with the loss of coordination (LOC) in existing protection infrastructure, with disruption to an expected sequence between utility reclosers and fuses. This thesis aims to offer solutions to these issues, allowing for DG sources and microgrids to be integrated into utility distribution networks without significant effect on existing protection infrastructure.
The integration of DG units into radial distribution networks can result in LOC between upstream reclosers and downstream fuses. To overcome this issue a novel reclosing scheme is proposed whereby a control unit, variable load bank and dedicated recloser are integrated at the point of common coupling (PCC) between the DG unit and the network. This scheme works by receiving a control signal from the distribution network head-end recloser via a communication channel to signal the detection of a fault. Post fault detection, in conjunction with the DG current exceeding pre-specified pick up levels, the control unit disconnects the DG unit from the network to a transfer impedance. This transfer allows the DG unit to continue to supply the transfer impedance at the pre-fault load sharing condition, without the requirement for a shut down. This causes the DG unit to maintain its pre-fault speed and frequency, resulting in a fast reconnection time once the
system fault is cleared by the existing protection infrastructure. The scheme is also compared to another potential method, namely fault current limiters (FCLs).
To address the possibility of communication failure in the novel reclosing scheme, a fault detection technique is proposed based on measurements of the rate of change of current output by DG sources. The rate of change of current (ROCOC) is measured over a specified time window to generate a fault detection signal when the ROCOC exceeds specified pickup values.
A hybrid adaptive overcurrent and differential protection scheme is proposed to protect microgrids that operate in both grid and islanded modes. Differential relays are utilized for feeder backbones and buses while adaptive overcurrent relays are concurrently used for load points. The hybrid approach is to reduce both infrastructure upgrade requirements and setting computation complexity, whilst also addressing the potential lack of coordination when differing protection mechanisms are merged. The proposed scheme is validated through multiple time-domain simulations while the microgrid is in both grid and islanded modes of operation.
A smart protection scheme is then proposed to predict and mitigate the short circuit contribution of a microgrid to a utility fault at a magnitude below the LOC limit. The scheme utilizes polynomial regression analysis (PRA) and particle swarm optimization (PSO) in conjunction with a…
Advisors/Committee Members: Faried, Sherif O, Ko, Seok-Bum, Karki, Rajesh, Kasap, Safa O, Oguocha, Ikechukwuka N.
Subjects/Keywords: Microgrid; Power System Protection
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wheeler, K. A. 1. (2018). MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/11642
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wheeler, Keaton A 1990-. “MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS.” 2018. Thesis, University of Saskatchewan. Accessed February 26, 2021.
http://hdl.handle.net/10388/11642.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wheeler, Keaton A 1990-. “MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS.” 2018. Web. 26 Feb 2021.
Vancouver:
Wheeler KA1. MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS. [Internet] [Thesis]. University of Saskatchewan; 2018. [cited 2021 Feb 26].
Available from: http://hdl.handle.net/10388/11642.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wheeler KA1. MITIGATION OF MICROGRID INTERACTIONS ON PROTECTION SYSTEMS IN UTILITY NETWORKS. [Thesis]. University of Saskatchewan; 2018. Available from: http://hdl.handle.net/10388/11642
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Addis Ababa University
29.
Seblewongel, Tesfu.
Simulation of Parabolic Trough Concentrating Solar Power Generation System
.
Degree: 2014, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/6022
► Climate change has drastically increased causing global warming due to emission of greenhouse gas with the provision of energy services that community of the world…
(more)
▼ Climate change has drastically increased causing global warming due to emission of
greenhouse gas with the provision of energy services that community of the world uses. In
order to work against this trend, varieties of researches are necessary to avoid the negative
impacts of global warming. Among the various forms, of utilizing energy mechanisms that
curtails the emission of greenhouse gases is solar energy electricity production.
In this work, theoretical performance of concentrated solar
power system (CSPS) using
parabolic trough collectors (PTC) is investigated. The software TRNSYS and the Solar
Thermal Electric Components (STEC) library are used to model the
power system design and
simulations. This model was constructed using data from an existing 30 MW Solar Electric
Generating
System (SEGS VI) using PTC’s in Karmer Junction, California. Input data and
results of the simulation of the already existing SEGS VI plant were used for validating the
current model.
The validated model is used for building a 10 MW
system using TRNSYS. The reference
state point properties which are used as inputs in the 10 MW TRNSYS model are determined
using MATLAB software. A MATLAB code is used to find the initial pressure after giving
first guess for the initial pressure and checking the error. This initial pressure is found to be
P (1) = 100 [bar]. This pressure is found for initial steam temperature of 371 O C. Then,
hourly simulations of electrical
power and direct normal irradiance (DNI) are determined for
selected days of year 2001 (for which complete data are available), for Adigala, Ethiopia.
Different kinds of criteria for land use, annual irradiation and infrastructure are discussed in
order to properly locate the CSP plants. Depending on the data gathered and on the criteria
set for the CSP installation, north eastern Ethiopia is a suitable site since it has a flat land
topology and high solar insolation.
As the cost of
power generation by CSP technologies is of great importance for the
promotion of the technology to be proven as competitive alternative to the conventional oil or
gas fired
power plants. This thesis work tackles the economic aspect by investigating the cost
of electricity generation of the modeled parabolic trough
power plant using simulation tool
SAM (
System Advisor Model).
Advisors/Committee Members: Dr.-Ing. Abebayehu Assefa (advisor).
Subjects/Keywords: Parabolic;
Solar Power Generation System
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APA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Seblewongel, T. (2014). Simulation of Parabolic Trough Concentrating Solar Power Generation System
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/6022
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Seblewongel, Tesfu. “Simulation of Parabolic Trough Concentrating Solar Power Generation System
.” 2014. Thesis, Addis Ababa University. Accessed February 26, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/6022.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Seblewongel, Tesfu. “Simulation of Parabolic Trough Concentrating Solar Power Generation System
.” 2014. Web. 26 Feb 2021.
Vancouver:
Seblewongel T. Simulation of Parabolic Trough Concentrating Solar Power Generation System
. [Internet] [Thesis]. Addis Ababa University; 2014. [cited 2021 Feb 26].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/6022.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Seblewongel T. Simulation of Parabolic Trough Concentrating Solar Power Generation System
. [Thesis]. Addis Ababa University; 2014. Available from: http://etd.aau.edu.et/dspace/handle/123456789/6022
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Ghana
30.
Banuro, J.K.
Capacity Expansion Planning For Electric Power Generation in Ghana
.
Degree: 2016, University of Ghana
URL: http://ugspace.ug.edu.gh/handle/123456789/33696
► The Ghanaian electric power system, like most Sub-Saharan African countries, is bedevilled with the problem of inadequate generation of electric power amidst growing demand for…
(more)
▼ The Ghanaian electric power system, like most Sub-Saharan African countries, is bedevilled with the problem of inadequate generation of electric power amidst growing demand for electricity. Governments over the years have tried to tackle the issue of inadequate generation capacity and supply of electricity in Ghana to meet the increasing demand for electric power. Yet electricity supply in Ghana remains erratic and inconsistent. The purpose of this study was to develop a long-term (20-years) electricity generation expansion plan for Ghana’s electricity sub-sector that takes into account important attributes specially related to Ghana, such as budget constraint. The study employs multi-period stochastic mixed-integer linear programming (MILP) to model and solve the problem of determining the technology type, timing and number of units of generators to add to the existing capacity under uncertain demand taking into account budget constraint. Secondary data was used to estimate all the model parameters. Periodic electricity demand scenarios were obtained by assuming that the uncertain demand follows a triangular distribution with a minimum increase of 1%, the most likely increase of 7% and a maximum increase of 15% over the immediate past year’s electricity demand. The proposed multi-period stochastic MILP model was run for two cases: without budget constraint which depicts the case where there are sufficient funds to undertake an expansion plan and the budget constraint case, where the expansion plan is faced with lack of funds. The imposition of budget constraint is a departure from the typical generation capacity expansion models found in the literature and helps explain generation expansion pattern in Ghana. The expected values of the objective function and the generation expansion plans considering no budget constraint and budget constraints were optimized in order to draw analogy. It is observed that the presence of budget constraint sometimes forces the decision maker to take decisions that might be sub-optimal compared to when sufficient funds are available.
Subjects/Keywords: Electricity;
Ghana;
Electric Power System
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Banuro, J. K. (2016). Capacity Expansion Planning For Electric Power Generation in Ghana
. (Masters Thesis). University of Ghana. Retrieved from http://ugspace.ug.edu.gh/handle/123456789/33696
Chicago Manual of Style (16th Edition):
Banuro, J K. “Capacity Expansion Planning For Electric Power Generation in Ghana
.” 2016. Masters Thesis, University of Ghana. Accessed February 26, 2021.
http://ugspace.ug.edu.gh/handle/123456789/33696.
MLA Handbook (7th Edition):
Banuro, J K. “Capacity Expansion Planning For Electric Power Generation in Ghana
.” 2016. Web. 26 Feb 2021.
Vancouver:
Banuro JK. Capacity Expansion Planning For Electric Power Generation in Ghana
. [Internet] [Masters thesis]. University of Ghana; 2016. [cited 2021 Feb 26].
Available from: http://ugspace.ug.edu.gh/handle/123456789/33696.
Council of Science Editors:
Banuro JK. Capacity Expansion Planning For Electric Power Generation in Ghana
. [Masters Thesis]. University of Ghana; 2016. Available from: http://ugspace.ug.edu.gh/handle/123456789/33696
◁ [1] [2] [3] [4] [5] … [83] ▶
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Open Access Theses and Dissertations