subject:(Electric power systems Reliability)

Nelson Mandela Metropolitan University

1. Pantshwa, Athini. Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit.

Degree: 2018, Nelson Mandela Metropolitan University

URL: http://hdl.handle.net/10948/34722

► A stable and reliable electrical power supply system is an inevitable pre-requisite for the technological and economic growth of any nation. Due to this, utilities… (more)

▼ A stable and reliable electrical power supply system is an inevitable pre-requisite for the technological and economic growth of any nation. Due to this, utilities must strive and ensure that the customer’s reliability requirements are met and that the regulators requirements are satisfied at the lowest possible cost. It is known fact around the world that 90% of the customer service interruptions are caused due to failure in distribution system. Therefore, it is worth considering reliability assessments as it provides an opportunity to incorporate the cost or losses incurred by the utilities customer because of power failure. This must be considered in the planning and operating practices. The system modelling and simulation study is carried out on one of the district’s distribution system which consists of 132 kV, 66 kV and 22 kV network in Aliwal North Sector ECOU. The reliability assessment is done on the 22, 66 and 132 kV system to assess the performance of the present system and predictive reliability analysis for the future system considering load growth and system expansion. The alternative which gives low SAIDI, SAIFI and minimum breakeven costs is being assessed and considered. The reliability of 132 kV system could be further improved by constructing a new 132 kV line from a different source of supply and connecting with line coming from another district (reserve) at reasonable break-even cost. The decision base could be further improved by having Aliwal North Sector context interruption cost. However, the historical data which may be used in Aliwal North Sector to acquire interruption costs from the customers are being proposed. The focus should be on improving the power quality on constrained networks first, then the reliability. Therefore, for the Aliwal North power system network it is imperative that Eskom invest on the reliability of this network. This dissertation also analysed load reflected economic benefit versus performance expectations that should be optimized through achieving a balance between network performance (SAIDI) improvement, and total life cycle cost (to Eskom as well as the economy). Reliability analysis conducted in this dissertation used Aliwal North power system network as a case study; the results proved that the system is vulnerable to faults, planned and unplanned outages. Reliability evaluation studies were conducted on the system using DigSilent software in conjunction with FME. These two models gave accurate results with acceptable variance in most indices except for the ENS where the variance was quite significant. It can be concluded that DigSilent results are the most accurate results in all three reliability evaluation scenarios for the Aliwal North Power System, best interpretation being that of DigSilent.

Subjects/Keywords: Electric power transmission – Reliability; Electric power distribution; Electric power; Electric power systems

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APA (6^th Edition):

Pantshwa, A. (2018). Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/34722

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pantshwa, Athini. “Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit.” 2018. Thesis, Nelson Mandela Metropolitan University. Accessed January 22, 2021. http://hdl.handle.net/10948/34722.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pantshwa, Athini. “Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit.” 2018. Web. 22 Jan 2021.

Vancouver:

Pantshwa A. Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10948/34722.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pantshwa A. Analysis of the reliability for the 132/66/22 KV distribution network within Eskom’s Eastern Cape operating unit. [Thesis]. Nelson Mandela Metropolitan University; 2018. Available from: http://hdl.handle.net/10948/34722

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Columbia University

2. Harnett, Sean R. Optimization methods for power grid reliability.

Degree: 2016, Columbia University

URL: https://doi.org/10.7916/D8MS3SM8

► This dissertation focuses on two specific problems related to the reliability of the modern power grid. The first part investigates the economic dispatch problem with… (more)

Subjects/Keywords: Electric power systems – Reliability – Mathematical models; Electric power distribution – Reliability; Mathematical optimization; Electric power systems – Reliability; Mathematics; Operations research

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APA (6^th Edition):

Harnett, S. R. (2016). Optimization methods for power grid reliability. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8MS3SM8

Chicago Manual of Style (16^th Edition):

Harnett, Sean R. “Optimization methods for power grid reliability.” 2016. Doctoral Dissertation, Columbia University. Accessed January 22, 2021. https://doi.org/10.7916/D8MS3SM8.

MLA Handbook (7^th Edition):

Harnett, Sean R. “Optimization methods for power grid reliability.” 2016. Web. 22 Jan 2021.

Vancouver:

Harnett SR. Optimization methods for power grid reliability. [Internet] [Doctoral dissertation]. Columbia University; 2016. [cited 2021 Jan 22]. Available from: https://doi.org/10.7916/D8MS3SM8.

Council of Science Editors:

Harnett SR. Optimization methods for power grid reliability. [Doctoral Dissertation]. Columbia University; 2016. Available from: https://doi.org/10.7916/D8MS3SM8

Michigan State University

3. Ben-Idris, Mohammed. Applications of sensitivity analysis in planning and operation of modern power systems.

Degree: 2014, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:2489

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Thesis Ph. D. Michigan State University. Electrical Engineering 2014.

More large blackouts in power systems have been encountered in the last few years than in… (more)

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Thesis Ph. D. Michigan State University. Electrical Engineering 2014.

More large blackouts in power systems have been encountered in the last few years than in any other period in history. Although the evolution of a large blackout is a complex process, it usually starts with a small triggering event that by successive events can cascade and evolve into a complete blackout. Therefore, hardening power systems against such events and improving power system reliability are of necessity. Several reliability indices for composite systems have been introduced such as loss of load probability, loss of load frequency, loss of load expectation, expected energy not supplied, expected demand not supplied, etc. Although these indices are of a great importance in both planning and operational power system reliability evaluation, they lack the ability to identify the influence of each area or equipment on system reliability. Moreover, these indices cannot determine the most effective way to improve the system in order to keep it reliable. Due to these reasons, significant efforts have been devoted to this area in recent years to evaluate what the system's reliability justifications are and to determine the best location in which to invest.One of the promising methods that can identify the most vulnerable component(s), bus(es), or area(s) is performing sensitivity analysis of the possible load shedding with respect to component parameters and operating limits. The sensitivity analysis provides a measure of the amount of load to be curtailed in response to the violation of the operating limits or component characteristics.The task of performing sensitivity analysis is amply used in power system reliability planning and operational studies. However, the application of sensitivity analysis in the changing operating environment such as the newly imposed emission constraints, penetration of the renewable energy sources and cascading failures in power systems has not been given much attention. Sensitivity analyses of the reliability indices can be conducted either analytically such as using state space enumeration or by means of simulations. Therefore, performing sensitivity analyses over a large set of variables for large systems is computationally expensive and often intractable.The work presented in thesis develops and proposes new expressions for sensitivity analysis that can be used to identify the most vulnerable components in power systems. Also, this work proposes a heuristic technique in conjunction with the population-based intelligent search methods (PIS) to reduce the computation burden. The work in this thesis is divided into three parts. Part I presents the concept of the sensitivity analyses and provides the mathematical derivations of the proposed expressions. Also, this part introduces new techniques to reduce the computational time and burden based on PIS methods and their applications in power system reliability evaluation. Furthermore, it introduces a new technique to classify the search space into success, failure…

Advisors/Committee Members: Mitra, Joydeep, Balasubramaniam, Shanker, Choi, Jongeun, Wang, Bingsen.

Subjects/Keywords: Electric power systems – Reliability – Analysis; Electrical engineering

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APA (6^th Edition):

Ben-Idris, M. (2014). Applications of sensitivity analysis in planning and operation of modern power systems. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:2489

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ben-Idris, Mohammed. “Applications of sensitivity analysis in planning and operation of modern power systems.” 2014. Thesis, Michigan State University. Accessed January 22, 2021. http://etd.lib.msu.edu/islandora/object/etd:2489.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ben-Idris, Mohammed. “Applications of sensitivity analysis in planning and operation of modern power systems.” 2014. Web. 22 Jan 2021.

Vancouver:

Ben-Idris M. Applications of sensitivity analysis in planning and operation of modern power systems. [Internet] [Thesis]. Michigan State University; 2014. [cited 2021 Jan 22]. Available from: http://etd.lib.msu.edu/islandora/object/etd:2489.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ben-Idris M. Applications of sensitivity analysis in planning and operation of modern power systems. [Thesis]. Michigan State University; 2014. Available from: http://etd.lib.msu.edu/islandora/object/etd:2489

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

4. Tian, Yuting. Reliability-based optimization of distribution system protection.

Degree: 2014, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:2666

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Thesis M.S. Michigan State University. Electrical Engineering 2014.

The power system is one of the most complex systems in existence. In any complex system, it… (more)

Subjects/Keywords: Electric power systems – Reliability; Electrical engineering

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APA (6^th Edition):

Tian, Y. (2014). Reliability-based optimization of distribution system protection. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:2666

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tian, Yuting. “Reliability-based optimization of distribution system protection.” 2014. Thesis, Michigan State University. Accessed January 22, 2021. http://etd.lib.msu.edu/islandora/object/etd:2666.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tian, Yuting. “Reliability-based optimization of distribution system protection.” 2014. Web. 22 Jan 2021.

Vancouver:

Tian Y. Reliability-based optimization of distribution system protection. [Internet] [Thesis]. Michigan State University; 2014. [cited 2021 Jan 22]. Available from: http://etd.lib.msu.edu/islandora/object/etd:2666.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tian Y. Reliability-based optimization of distribution system protection. [Thesis]. Michigan State University; 2014. Available from: http://etd.lib.msu.edu/islandora/object/etd:2666

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

5. Hayes, Thomas Pierce. A general approach to the calculation of reliability indices for an electric power transmission system.

Degree: PhD, Electric engineering, 1976, Georgia Tech

URL: http://hdl.handle.net/1853/15719

Subjects/Keywords: Electric power systems Reliability

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APA (6^th Edition):

Hayes, T. P. (1976). A general approach to the calculation of reliability indices for an electric power transmission system. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/15719

Chicago Manual of Style (16^th Edition):

Hayes, Thomas Pierce. “A general approach to the calculation of reliability indices for an electric power transmission system.” 1976. Doctoral Dissertation, Georgia Tech. Accessed January 22, 2021. http://hdl.handle.net/1853/15719.

MLA Handbook (7^th Edition):

Hayes, Thomas Pierce. “A general approach to the calculation of reliability indices for an electric power transmission system.” 1976. Web. 22 Jan 2021.

Vancouver:

Hayes TP. A general approach to the calculation of reliability indices for an electric power transmission system. [Internet] [Doctoral dissertation]. Georgia Tech; 1976. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1853/15719.

Council of Science Editors:

Hayes TP. A general approach to the calculation of reliability indices for an electric power transmission system. [Doctoral Dissertation]. Georgia Tech; 1976. Available from: http://hdl.handle.net/1853/15719

Georgia Tech

6. Kumbale, Murali. Bulk transmission system reliability analysis of protection and control groups.

Degree: MS, Electric engineering, 1996, Georgia Tech

URL: http://hdl.handle.net/1853/13840

Subjects/Keywords: Electric power systems Reliability

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APA (6^th Edition):

Kumbale, M. (1996). Bulk transmission system reliability analysis of protection and control groups. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/13840

Chicago Manual of Style (16^th Edition):

Kumbale, Murali. “Bulk transmission system reliability analysis of protection and control groups.” 1996. Masters Thesis, Georgia Tech. Accessed January 22, 2021. http://hdl.handle.net/1853/13840.

MLA Handbook (7^th Edition):

Kumbale, Murali. “Bulk transmission system reliability analysis of protection and control groups.” 1996. Web. 22 Jan 2021.

Vancouver:

Kumbale M. Bulk transmission system reliability analysis of protection and control groups. [Internet] [Masters thesis]. Georgia Tech; 1996. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1853/13840.

Council of Science Editors:

Kumbale M. Bulk transmission system reliability analysis of protection and control groups. [Masters Thesis]. Georgia Tech; 1996. Available from: http://hdl.handle.net/1853/13840

Michigan State University

7. Sulaeman, Samer. Modeling of variable energy resources in power system reliability assessment.

Degree: 2017, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:6807

► "In recent years, the reliability evaluation of power systems has been receiving increasing attention. This is largely because of the ongoing changes in generation portfolios… (more)

Subjects/Keywords: Wind power plants – Mathematical models; Solar power plants – Mathematical models; Distributed resources (Electric utilities); Interconnected electric utility systems – Reliability; Electric power systems – Reliability; Electrical engineering

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APA (6^th Edition):

Sulaeman, S. (2017). Modeling of variable energy resources in power system reliability assessment. (Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:6807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sulaeman, Samer. “Modeling of variable energy resources in power system reliability assessment.” 2017. Thesis, Michigan State University. Accessed January 22, 2021. http://etd.lib.msu.edu/islandora/object/etd:6807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sulaeman, Samer. “Modeling of variable energy resources in power system reliability assessment.” 2017. Web. 22 Jan 2021.

Vancouver:

Sulaeman S. Modeling of variable energy resources in power system reliability assessment. [Internet] [Thesis]. Michigan State University; 2017. [cited 2021 Jan 22]. Available from: http://etd.lib.msu.edu/islandora/object/etd:6807.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sulaeman S. Modeling of variable energy resources in power system reliability assessment. [Thesis]. Michigan State University; 2017. Available from: http://etd.lib.msu.edu/islandora/object/etd:6807

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Eygelaar, Jancke. Generator maintenance scheduling based on the expected capability of satisfying energy demand.

Degree: PhD, Industrial Engineering, 2018, Stellenbosch University

URL: http://hdl.handle.net/10019.1/103367

► ENGLISH ABSTRACT: The integrity of an electric power system is significantly threatened by unexpected downtimes of power generating units (PGUs). In order to minimise the… (more)

▼ ENGLISH ABSTRACT: The integrity of an electric power system is significantly threatened by unexpected downtimes of power generating units (PGUs). In order to minimise the occurrence of such unexpected PGU downtimes, planned preventative maintenance is routinely performed on the PGUs of the system. The effective scheduling of these planned maintenance PGU outages is a considerable challenge for any power utility. The celebrated generator maintenance scheduling (GMS) problem involves finding a set of planned preventative maintenance outages of PGUs in a power system. A feasible solution to this problem is typically a list of dates indicating the commencement of planned maintenance for each PGU in the power system. Solutions to the GMS problem are typically subjected to a wide variety of power system constraints and the problem is considered to be a hard combinatorial optimisation problem. Two novel GMS criteria are introduced in this dissertation. The first criterion involves minimisation of the probability that any PGU in the system will fail during a scheduling window of pre-specified length. This scheduling criterion is weighted according to the rated capacity of each PGU so as to give some preference, in terms of maintenance commencement times, to PGUs that contribute considerably to the overall system capacity. This criterion draws from basic notions in reliability theory which may be used to estimate the failure probability of a system. The second criterion involves maximisation of the expected energy produced during the scheduling window. In this case, PGU failures are modelled by random variables. Two mixed integer programming models are formulated for the GMS problem with the newly proposed scheduling criteria as objective functions. One of these models is linear and the other one is nonlinear. The nonlinear model is linearised by piecewise linear approximation in order to be able to solve it exactly. Both models incorporate a number of constraints, including energy demand satisfaction constraints, earliest and latest maintenance window constraints, maintenance resource constraints and maintenance exclusion constraints. Two GMS test problems are modelled in this fashion. The resulting four GMS model instances are each solved by two different solution approaches - exactly and approximately (by employing a metaheuristic). The exact solution approach involves use of IBM ILOG's well-known optimisation suite CPLEX which employs a branch-and-cut method, while the metaheuristic of simulated annealing is implemented in the programming language R as approximate model solution methodology. After computing optimal solutions for the four GMS model instances mentioned above, a sensitivity analysis is performed in order to determine the feasibility of an exact solution approach in respect of small to medium-sized GMS problem instances. An extensive parameter optimisation experiment is also conducted in order to obtain a suitable set of simulated annealing parameter values for use in the context of the four GMS… Advisors/Committee Members: Van Vuuren, J. H., Stellenbosch University. Faculty of Engineering. Dept. of Industrial Engineering..

Subjects/Keywords: UCTD; Electric generators – Maintenance and repair – Scheduling; Electric power systems – Reliability (Engineering); Electric power – Supply and demand

10 more images…

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APA (6^th Edition):

Eygelaar, J. (2018). Generator maintenance scheduling based on the expected capability of satisfying energy demand. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/103367

Chicago Manual of Style (16^th Edition):

Eygelaar, Jancke. “Generator maintenance scheduling based on the expected capability of satisfying energy demand.” 2018. Doctoral Dissertation, Stellenbosch University. Accessed January 22, 2021. http://hdl.handle.net/10019.1/103367.

MLA Handbook (7^th Edition):

Eygelaar, Jancke. “Generator maintenance scheduling based on the expected capability of satisfying energy demand.” 2018. Web. 22 Jan 2021.

Vancouver:

Eygelaar J. Generator maintenance scheduling based on the expected capability of satisfying energy demand. [Internet] [Doctoral dissertation]. Stellenbosch University; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10019.1/103367.

Council of Science Editors:

Eygelaar J. Generator maintenance scheduling based on the expected capability of satisfying energy demand. [Doctoral Dissertation]. Stellenbosch University; 2018. Available from: http://hdl.handle.net/10019.1/103367

Durban University of Technology

9. Lokothwayo, Musawenkosi Phillemon. Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation.

Degree: 2017, Durban University of Technology

URL: http://hdl.handle.net/10321/2567

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Submitted in fulfillment of the requirements for the degree of Master of Engineering, Durban University of Technology, Durban, South Africa, 2017.

Much equipment in the… (more)

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Submitted in fulfillment of the requirements for the degree of Master of Engineering, Durban University of Technology, Durban, South Africa, 2017.

Much equipment in the eThekwini Electricity network has been in use for several decades. Failure of this equipment could critically impact electricity supply to customers, and result in high costs associated with loss of load and/or component replacement. The fundamental motive for any power utility is to plan, operate, and maintain power infrastructure such that customers receive reliable electric services at the minimum expense possible. For this dissertation, the Reliability Centered Maintenance (RCM) model was implemented in the eThekwini Electricity network. This model emphasises the importance of long-term planning and allocation of resources over the life time of a transformer, or any other component. RCM is an ongoing process that entails gathering data from operating systems performance, and using this data to improve design, operation, and maintenance of the system. The eThekwini Power network failure statistics for the previous five years were collected and thoroughly analysed to identify critical components associated with higher failure rates, and associated consequences. Upon examination, it was determined that the power transformer is a critical component of the system. The transformer plays a significant role in the power system due to its remarkable effect on overall reliability, in addition to the fact that it is a major cost factor in the power grid. Transformer management comprises of identifying the appropriate type and frequency of maintenance, and the appropriate time to replace the transformer in a cost-effective manner. The Markov model for ascertaining the transformer’s remaining service life was applied on the identified critical transformer. The transformer deterioration process is modelled by representing the oil insulation by discrete stages. Using the Institute of Electrical and Electronics Engineers (IEEE) standard for interpreting the transformer insulation, the transformer under review was found to be at stage two. Further analysis was performed on system unavailability rates versus mean time to first failure (MTTFF). The analyses indicated that the higher the MTTFF, the longer the system availability whereas the lower the MTTFF, the more reduced the system availability. Improving the MTTFF rates of a system will enhance reliability. The effective application of RCM will optimise the maintenance processes with reasonable expenditures.

M

Advisors/Committee Members: Naidoo, Pat, D'Almaine, George Frederick.

Subjects/Keywords: Electric power systems – South Africa – Durban – Reliability; Electric utilities – South Africa – Durban – Reliability; Electric transformers – Maintenance and repair; Electric machinery – Maintenance and repair; Reliability (Engineering)

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APA (6^th Edition):

Lokothwayo, M. P. (2017). Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation. (Thesis). Durban University of Technology. Retrieved from http://hdl.handle.net/10321/2567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lokothwayo, Musawenkosi Phillemon. “Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation.” 2017. Thesis, Durban University of Technology. Accessed January 22, 2021. http://hdl.handle.net/10321/2567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lokothwayo, Musawenkosi Phillemon. “Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation.” 2017. Web. 22 Jan 2021.

Vancouver:

Lokothwayo MP. Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation. [Internet] [Thesis]. Durban University of Technology; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10321/2567.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lokothwayo MP. Reliability centered maintenance implementation on the eThekwini electricity network for system maintenance process optimisation. [Thesis]. Durban University of Technology; 2017. Available from: http://hdl.handle.net/10321/2567

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

10. Stevens, McKay Benjamin. Designing shipboard electrical distribution systems for optimal reliability.

Degree: MSin Engineering, Electrical and Computer Engineering, 2013, University of Texas – Austin

URL: http://hdl.handle.net/2152/23576

► Analysis was performed to quantify and compare the reliability of several different notional shipboard DC distribution system topologies in serving their equipment loads. Further, the… (more)

Subjects/Keywords: Power distribution; Reliability; Electric ships

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APA (6^th Edition):

Stevens, M. B. (2013). Designing shipboard electrical distribution systems for optimal reliability. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/23576

Chicago Manual of Style (16^th Edition):

Stevens, McKay Benjamin. “Designing shipboard electrical distribution systems for optimal reliability.” 2013. Masters Thesis, University of Texas – Austin. Accessed January 22, 2021. http://hdl.handle.net/2152/23576.

MLA Handbook (7^th Edition):

Stevens, McKay Benjamin. “Designing shipboard electrical distribution systems for optimal reliability.” 2013. Web. 22 Jan 2021.

Vancouver:

Stevens MB. Designing shipboard electrical distribution systems for optimal reliability. [Internet] [Masters thesis]. University of Texas – Austin; 2013. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/2152/23576.

Council of Science Editors:

Stevens MB. Designing shipboard electrical distribution systems for optimal reliability. [Masters Thesis]. University of Texas – Austin; 2013. Available from: http://hdl.handle.net/2152/23576

Ryerson University

11. Makvand, Saeid Biglary. Probabilistic power transmission system reliability evaluation.

Degree: 2014, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A3276

► Modern power systems are prudently designed and operated to their brim as allowed by policies and procedures. Many of these utilities have advanced transmission systems… (more)

Subjects/Keywords: Electric power transmission – Planning – Statistical methods; Probabilities; Electric power systems – Risk assessment; Reliability (Engineering) – Mathematical models – Evaluation

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APA (6^th Edition):

Makvand, S. B. (2014). Probabilistic power transmission system reliability evaluation. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A3276

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Makvand, Saeid Biglary. “Probabilistic power transmission system reliability evaluation.” 2014. Thesis, Ryerson University. Accessed January 22, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A3276.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Makvand, Saeid Biglary. “Probabilistic power transmission system reliability evaluation.” 2014. Web. 22 Jan 2021.

Vancouver:

Makvand SB. Probabilistic power transmission system reliability evaluation. [Internet] [Thesis]. Ryerson University; 2014. [cited 2021 Jan 22]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3276.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Makvand SB. Probabilistic power transmission system reliability evaluation. [Thesis]. Ryerson University; 2014. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A3276

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

12. Preston, Eugene Gordon, 1947-. Reliability of electric generation with transmission constraints.

Degree: PhD, Electrical Engineering, 1997, University of Texas – Austin

URL: http://hdl.handle.net/2152/63115

► A new probabilistic load flow (PLF) model for calculating the reliability of large nonequivalenced electric networks with transmission constraints is given. Generation loss of load… (more)

Subjects/Keywords: Electric power systems – Reliability; Electric power transmission – Equipment and supplies – Reliability

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APA (6^th Edition):

Preston, Eugene Gordon, 1. (1997). Reliability of electric generation with transmission constraints. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/63115

Chicago Manual of Style (16^th Edition):

Preston, Eugene Gordon, 1947-. “Reliability of electric generation with transmission constraints.” 1997. Doctoral Dissertation, University of Texas – Austin. Accessed January 22, 2021. http://hdl.handle.net/2152/63115.

MLA Handbook (7^th Edition):

Preston, Eugene Gordon, 1947-. “Reliability of electric generation with transmission constraints.” 1997. Web. 22 Jan 2021.

Vancouver:

Preston, Eugene Gordon 1. Reliability of electric generation with transmission constraints. [Internet] [Doctoral dissertation]. University of Texas – Austin; 1997. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/2152/63115.

Council of Science Editors:

Preston, Eugene Gordon 1. Reliability of electric generation with transmission constraints. [Doctoral Dissertation]. University of Texas – Austin; 1997. Available from: http://hdl.handle.net/2152/63115

13. Abdelmoumene, Abdelkader. Design and Implementation of a Reliable Digital Relay for Electrical Equipment.

Degree: 2015, Université M'Hamed Bougara Boumerdès

URL: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2187

►

87 p. : ill. ; 30 cm

While an electrical power system is one of the more complex and important systems ever built by human… (more)

▼

87 p. : ill. ; 30 cm

While an electrical power system is one of the more complex and important systems ever built by human civilization; the protection system is not less complexity. The situation is aggravated by the increasing complexity of protection schemes and the use of digital relays containing software for the management of the different operating conditions of power systems. Digital relays are a result of the application of microprocessor technology in the protection industry. These relays are in an extensive use in modern protection schemes and are also a very active area of research. A particular emphasis has been given to the development of algorithms that allow obtaining the most accurate decision in the fastest way. Besides, the low reliability level of digital relays is regarded as a dark point that hovers about them and considered as major worry stated by many specialists in the field of power system. The work reported in this thesis has made the following contributions : -An exhausting review which resumes the main highlights in protective relay's developments and trends. -An enhanced algorithm based on the theory of harmonic analysis to discriminate between the internal fault and the inrush current created during the switching of the power transformer. The simulation results of the proposed differential relay gave very satisfactory results in term of discrimination as well as in term of rapidity (operating time). - A new algorithm for numerical overcurrent protection of induction motors. The effectiveness of our developed model was proven by comparing its behaviors versus different abnormal situations with various inverse time characteristics normalized by the IEC standard. - A comprehensive analytical approach for assessing and improving the reliability of digital protective relay has been presented. After identifying the common cause failures; the fault Tree method has been used to analyze and quantify the failure rate, the reliability as well as the lifetime of DR. The results of the proposed methodology reveal that the failure rate is reduced by 25 %, the reliability is significantly improved and the lifetime is extended by more than 30 %

Subjects/Keywords: Reliability (Engineering); Power systems

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APA (6^th Edition):

Abdelmoumene, A. (2015). Design and Implementation of a Reliable Digital Relay for Electrical Equipment. (Thesis). Université M'Hamed Bougara Boumerdès. Retrieved from http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2187

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Abdelmoumene, Abdelkader. “Design and Implementation of a Reliable Digital Relay for Electrical Equipment.” 2015. Thesis, Université M'Hamed Bougara Boumerdès. Accessed January 22, 2021. http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2187.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Abdelmoumene, Abdelkader. “Design and Implementation of a Reliable Digital Relay for Electrical Equipment.” 2015. Web. 22 Jan 2021.

Vancouver:

Abdelmoumene A. Design and Implementation of a Reliable Digital Relay for Electrical Equipment. [Internet] [Thesis]. Université M'Hamed Bougara Boumerdès; 2015. [cited 2021 Jan 22]. Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2187.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Abdelmoumene A. Design and Implementation of a Reliable Digital Relay for Electrical Equipment. [Thesis]. Université M'Hamed Bougara Boumerdès; 2015. Available from: http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2187

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Abd Elwahid, Sarra. Hardware implementation of an automatic adaptive centralized under frequency load shedding.

Degree: 2013, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/186

► Due to the shortcomings of the conventional Under Frequency Load Shedding UFLS, most researches develop an adaptive UFLS schemes. With the aid of new technology… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Abd Elwahid, S. (2013). Hardware implementation of an automatic adaptive centralized under frequency load shedding. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/186

Chicago Manual of Style (16^th Edition):

Abd Elwahid, Sarra. “Hardware implementation of an automatic adaptive centralized under frequency load shedding.” 2013. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/186.

MLA Handbook (7^th Edition):

Abd Elwahid, Sarra. “Hardware implementation of an automatic adaptive centralized under frequency load shedding.” 2013. Web. 22 Jan 2021.

Vancouver:

Abd Elwahid S. Hardware implementation of an automatic adaptive centralized under frequency load shedding. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2013. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/186.

Council of Science Editors:

Abd Elwahid S. Hardware implementation of an automatic adaptive centralized under frequency load shedding. [Masters Thesis]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/186

15. Patterson, Russell William. Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested.

Degree: 2013, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/360

► A large utility was experiencing a problem when switching a two-stage capacitor bank resulting in misoperations of the bank protection. When the bypass switch is… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Patterson, R. W. (2013). Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/360

Chicago Manual of Style (16^th Edition):

Patterson, Russell William. “Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested.” 2013. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/360.

MLA Handbook (7^th Edition):

Patterson, Russell William. “Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested.” 2013. Web. 22 Jan 2021.

Vancouver:

Patterson RW. Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2013. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/360.

Council of Science Editors:

Patterson RW. Analysis of two-stage shunt capacitor bank protection deficiencies with mitigation suggested. [Masters Thesis]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/360

16. 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)

Subjects/Keywords: Electric power systems; Electric power system stability

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APA (6^th 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 (16^th Edition):

Ahmed, Miyada. “An exiplicit damping sensitivity expression for power system stabilizers applications in power systems.” 2017. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/519.

MLA Handbook (7^th Edition):

Ahmed, Miyada. “An exiplicit damping sensitivity expression for power system stabilizers applications in power systems.” 2017. Web. 22 Jan 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 Jan 22]. 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

17. Lautigar, Mitch. Automated transmission line fault analysis the SMT method.

Degree: 2019, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/600

► Analyzing faults from transmission lines automatically using a computer is a complex, multi-step process that takes a literal understanding of how the computer reads the… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Lautigar, M. (2019). Automated transmission line fault analysis the SMT method. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/600

Chicago Manual of Style (16^th Edition):

Lautigar, Mitch. “Automated transmission line fault analysis the SMT method.” 2019. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/600.

MLA Handbook (7^th Edition):

Lautigar, Mitch. “Automated transmission line fault analysis the SMT method.” 2019. Web. 22 Jan 2021.

Vancouver:

Lautigar M. Automated transmission line fault analysis the SMT method. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2019. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/600.

Council of Science Editors:

Lautigar M. Automated transmission line fault analysis the SMT method. [Masters Thesis]. University of Tennessee – Chattanooga; 2019. Available from: https://scholar.utc.edu/theses/600

18. Manandhar, Sudip. Reliability assessment of smart distribution system and analysis of automatic line switches.

Degree: 2013, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/331

► Electric Power reliability is a major concern of any utility company. Although the distribution system is getting advanced, reliable energy at a cheaper cost is… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Manandhar, S. (2013). Reliability assessment of smart distribution system and analysis of automatic line switches. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/331

Chicago Manual of Style (16^th Edition):

Manandhar, Sudip. “Reliability assessment of smart distribution system and analysis of automatic line switches.” 2013. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/331.

MLA Handbook (7^th Edition):

Manandhar, Sudip. “Reliability assessment of smart distribution system and analysis of automatic line switches.” 2013. Web. 22 Jan 2021.

Vancouver:

Manandhar S. Reliability assessment of smart distribution system and analysis of automatic line switches. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2013. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/331.

Council of Science Editors:

Manandhar S. Reliability assessment of smart distribution system and analysis of automatic line switches. [Masters Thesis]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/331

19. Goff, Cassandra Ha. Fast bus protection using iec 61850.

Degree: 2013, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/277

► International Electrotechnical Commission (IEC) 61850 is the latest technology that allows electric power utilities to build low cost digital substations. Because limited objective information is… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Goff, C. H. (2013). Fast bus protection using iec 61850. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/277

Chicago Manual of Style (16^th Edition):

Goff, Cassandra Ha. “Fast bus protection using iec 61850.” 2013. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/277.

MLA Handbook (7^th Edition):

Goff, Cassandra Ha. “Fast bus protection using iec 61850.” 2013. Web. 22 Jan 2021.

Vancouver:

Goff CH. Fast bus protection using iec 61850. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2013. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/277.

Council of Science Editors:

Goff CH. Fast bus protection using iec 61850. [Masters Thesis]. University of Tennessee – Chattanooga; 2013. Available from: https://scholar.utc.edu/theses/277

20. 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)

Subjects/Keywords: Electric power systems; Electric power system stability

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APA (6^th 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 (16^th Edition):

Mohammed, Enass. “Investigation of a new method for synchronous generator loss of excitation protection.” 2017. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/520.

MLA Handbook (7^th Edition):

Mohammed, Enass. “Investigation of a new method for synchronous generator loss of excitation protection.” 2017. Web. 22 Jan 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 Jan 22]. 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

21. Salah Aldeen Mohamed Zeyada, Mosab. Adaptive underfrequency load shedding based on real time simulation.

Degree: 2014, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/154

► Conventional Underfrequency Load Shedding (UFLS) is used to balance generation and load when underfrequency conditions occur. It sheds a fixed, predetermined amount of load irrespective… (more)

Subjects/Keywords: Electric power distribution; Electric power systems

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APA (6^th Edition):

Salah Aldeen Mohamed Zeyada, M. (2014). Adaptive underfrequency load shedding based on real time simulation. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/154

Chicago Manual of Style (16^th Edition):

Salah Aldeen Mohamed Zeyada, Mosab. “Adaptive underfrequency load shedding based on real time simulation.” 2014. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/154.

MLA Handbook (7^th Edition):

Salah Aldeen Mohamed Zeyada, Mosab. “Adaptive underfrequency load shedding based on real time simulation.” 2014. Web. 22 Jan 2021.

Vancouver:

Salah Aldeen Mohamed Zeyada M. Adaptive underfrequency load shedding based on real time simulation. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2014. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/154.

Council of Science Editors:

Salah Aldeen Mohamed Zeyada M. Adaptive underfrequency load shedding based on real time simulation. [Masters Thesis]. University of Tennessee – Chattanooga; 2014. Available from: https://scholar.utc.edu/theses/154

22. Alverson, Mugdha. Relay coordination with multiple breaker-in/breaker-out stations on the transmission line.

Degree: 2019, University of Tennessee – Chattanooga

URL: https://scholar.utc.edu/theses/592

► The main purpose of power system protection is to remove faults from the system as soon as possible so minimum damage happens to the transmission… (more)

Subjects/Keywords: Electric power systems; Electric power distribution

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APA (6^th Edition):

Alverson, M. (2019). Relay coordination with multiple breaker-in/breaker-out stations on the transmission line. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/592

Chicago Manual of Style (16^th Edition):

Alverson, Mugdha. “Relay coordination with multiple breaker-in/breaker-out stations on the transmission line.” 2019. Masters Thesis, University of Tennessee – Chattanooga. Accessed January 22, 2021. https://scholar.utc.edu/theses/592.

MLA Handbook (7^th Edition):

Alverson, Mugdha. “Relay coordination with multiple breaker-in/breaker-out stations on the transmission line.” 2019. Web. 22 Jan 2021.

Vancouver:

Alverson M. Relay coordination with multiple breaker-in/breaker-out stations on the transmission line. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2019. [cited 2021 Jan 22]. Available from: https://scholar.utc.edu/theses/592.

Council of Science Editors:

Alverson M. Relay coordination with multiple breaker-in/breaker-out stations on the transmission line. [Masters Thesis]. University of Tennessee – Chattanooga; 2019. Available from: https://scholar.utc.edu/theses/592

Universidade Estadual de Campinas

23. Araujo Neto, José Evangelista, 1977-. Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector.

Degree: 2020, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351851

► Abstract: The electric utilities must guarantee the continuity and quality of the service provided. In order to enforce it, the ANEEL (Portuguese for The Brazilian… (more)

▼ Abstract: The electric utilities must guarantee the continuity and quality of the service provided. In order to enforce it, the ANEEL (Portuguese for The Brazilian National Electric Energy Agency) introduced penalties in the contracts with public electricity transmission utilities in case transmission facilities are taken out of service due to accidents, failures or scheduled maintenance. Such penalties highlight the importance of elaborating a maintenance plan that considers the trade-off between the cost of maintenance and system operation with high rates of reliability. However, planning an appropriate schedule for maintenance interventions is a complex task that makes it difficult to implement systematic assessments that could guide strategic actions aimed at improving services. Utilities have to deal with aspects related to the electric power industry, where the unavailability of equipment strongly impacts both their results as well as the operation of the interconnected system. In some cases, the issue is particularly difficult. The solution involves several characteristics of the problem, each of which can be interpreted as being a function to be met. It is expected that this functions includes: the maximization of the logistical capacity of the various maintenance teams, the maximization of the equipment¿s availability and reliability, and the minimization of the losses and financial costs resulting from the maintenance processes. The main objective of this work is to propose a methodology that provides the best strategies for carrying out maintenance on transmission equipment, considering the cost/reliability trade-off and a mathematical model for obtaining a feasible schedule and an effective optimization technique. The proposed technique consists of a combination of a constructive heuristic (to decrease the search space) with the dynamic programming. The proposed method was tested with actual data from substations of the Brazilian Interconnected System, and its results are presented and discussed Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Castro Junior, Carlos Alberto de, 1960- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Elétrica e de Computação (institution), Programa de Pós-Graduação em Engenharia Elétrica (nameofprogram), Silva, Maria da Guia da (committee member), Bacalhau, Eduardo Tadeu (committee member), Carvalho, Marcius Fabius Henriques de (committee member), Murari, Carlos Alberto Favarin (committee member).

Subjects/Keywords: Energia elétrica - Transmissão - Manutenção e reparos; Programação dinâmica; Programação heurística; Sistemas de energia elétrica - Confiabilidade (Engenharia); Electric power systems - Maintenance and repair; Dynamic programming; Heuristic programming; Electric power systems - Reliability

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APA (6^th Edition):

Araujo Neto, José Evangelista, 1. (2020). Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/351851

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Araujo Neto, José Evangelista, 1977-. “Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector.” 2020. Thesis, Universidade Estadual de Campinas. Accessed January 22, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/351851.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Araujo Neto, José Evangelista, 1977-. “Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector.” 2020. Web. 22 Jan 2021.

Vancouver:

Araujo Neto, José Evangelista 1. Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector. [Internet] [Thesis]. Universidade Estadual de Campinas; 2020. [cited 2021 Jan 22]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351851.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Araujo Neto, José Evangelista 1. Programação eficiente da manutenção dos ativos de transmissão do setor elétrico Brasileiro: Efficient scheduling of maintenance of transmission assets of the brazilian electricity sector. [Thesis]. Universidade Estadual de Campinas; 2020. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/351851

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Johannesburg

24. Venter, Erika. A quantitative analysis of indices to assess voltage quality on an electricity transmission network.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/4806

►

M.Phil.

Nearly every reference document, national and international standard, text book or web page discussing the topic of Power Quality has an introduction that refers… (more)

Subjects/Keywords: Electric power transmission - Reliability; Electrical power transmission; Distributed resources (Electric utilities) - Reliability

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APA (6^th Edition):

Venter, E. (2012). A quantitative analysis of indices to assess voltage quality on an electricity transmission network. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/4806

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Venter, Erika. “A quantitative analysis of indices to assess voltage quality on an electricity transmission network.” 2012. Thesis, University of Johannesburg. Accessed January 22, 2021. http://hdl.handle.net/10210/4806.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Venter, Erika. “A quantitative analysis of indices to assess voltage quality on an electricity transmission network.” 2012. Web. 22 Jan 2021.

Vancouver:

Venter E. A quantitative analysis of indices to assess voltage quality on an electricity transmission network. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10210/4806.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Venter E. A quantitative analysis of indices to assess voltage quality on an electricity transmission network. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/4806

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Drexel University

25. Lahiri, Sudipta. Modeling and simulation of shipboard integrated power systems.

Degree: 2011, Drexel University

URL: http://hdl.handle.net/1860/3494

►

The Integrated Power System (IPS) architecture forms the basis for designing current and future generations of naval power systems. This offers greater survivability and increased… (more)

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The Integrated Power System (IPS) architecture forms the basis for designing current and future generations of naval power systems. This offers greater survivability and increased efficiency over mechanical drive systems. The Power Management System (PMS) for the IPS incorporates a supervisory controller that optimizes the delivery of power to vital loads in the event of system disruptions. Deriving optimal control strategies requires an adequate model of the IPS as well as software simulation capability to analyze the behavior of the model. This thesis presents a model for the IPS while accounting for its unique features, develops a software simulation tool for numerical simulation of dynamic power systems. Simulation results of the IPS are presented and the applicability of the model for derivation of optimal controllers is discussed.Dynamic models for individual components: generator, prime-mover, propulsion motor, vital and non vital static loads and energy storage device, are presented. The differential equations presenting the transient dynamics are combined with the algebraic equations of the network to form a differential-algebraic model. A software platform for dynamic simulation of power systems is developed in Mathematica. The behavior of the model is evaluated and validated by simulating system disturbances. For tractability in numerical computation of the PMS, the order of the differential model is reduced by Singular Perturbation method. Simulations are performed to show that the reduced order model and the full order model converge to the same steady state while the deviation of the two models is within acceptable margins during the transient period. The reduced order model may be used for derivation of optimal control policies by dynamic programming, and the reduction in size of the state space offers a substantial reduction in the number of computations.

M.S., Electrical Engineering – Drexel University, 2011

Advisors/Committee Members: Niebur, Dagmar.

Subjects/Keywords: Electric engineering; Electric power systems; Systems engineering

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APA (6^th Edition):

Lahiri, S. (2011). Modeling and simulation of shipboard integrated power systems. (Thesis). Drexel University. Retrieved from http://hdl.handle.net/1860/3494

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lahiri, Sudipta. “Modeling and simulation of shipboard integrated power systems.” 2011. Thesis, Drexel University. Accessed January 22, 2021. http://hdl.handle.net/1860/3494.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lahiri, Sudipta. “Modeling and simulation of shipboard integrated power systems.” 2011. Web. 22 Jan 2021.

Vancouver:

Lahiri S. Modeling and simulation of shipboard integrated power systems. [Internet] [Thesis]. Drexel University; 2011. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1860/3494.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lahiri S. Modeling and simulation of shipboard integrated power systems. [Thesis]. Drexel University; 2011. Available from: http://hdl.handle.net/1860/3494

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

26. Asgarpoor, Sohrab. A Markov method for generating capacity reliability evaluation including operating considerations.

Degree: MS, electrical engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-A818

Subjects/Keywords: electrical engineering.; Major electrical engineering.; Electric power systems - Reliability.; Electric power-plants - Reliability.; Reliability (Engineering); Systems engineering.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Asgarpoor, S. (2012). A Markov method for generating capacity reliability evaluation including operating considerations. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-A818

Chicago Manual of Style (16^th Edition):

Asgarpoor, Sohrab. “A Markov method for generating capacity reliability evaluation including operating considerations.” 2012. Masters Thesis, Texas A&M University. Accessed January 22, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-A818.

MLA Handbook (7^th Edition):

Asgarpoor, Sohrab. “A Markov method for generating capacity reliability evaluation including operating considerations.” 2012. Web. 22 Jan 2021.

Vancouver:

Asgarpoor S. A Markov method for generating capacity reliability evaluation including operating considerations. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-A818.

Council of Science Editors:

Asgarpoor S. A Markov method for generating capacity reliability evaluation including operating considerations. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1981-THESIS-A818

University of Johannesburg

27. Kasemuana Matototo, Seraphin. A comprehensive study of power system harmonics.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/10309

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M.Tech. (Electrical and Electronic Engineering)

With the increasing use of nonlinear loads in power systems, harmonic pollution becomes more frequent with disastrous consequences on the… (more)

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M.Tech. (Electrical and Electronic Engineering)

With the increasing use of nonlinear loads in power systems, harmonic pollution becomes more frequent with disastrous consequences on the electrical network and other loads. Harmonic currents cause problems such as system resonance, protective relays and switchgear malfunction, communication interference, incorrect meter, equipment and process failure, over heating of transmission and distribution systems, insulation degradation and power transformer failure. It appears therefore absolutely essential to determine the current profile of the loads connected to the same Point of Common Coupling (PCC). This study aims to assess a distorted power system in order to determine the characteristics components of distorted waveforms (DC components, fundamental and harmonics components), and to quantify the respective distortion contributions in the power network. The numerical method is applied to analyse the current waveforms captured with the aid of the digital scope meter (DSO) 1200 series at different sections of the network. The power network under study is designed, constructed and analysed with the MatLab/Simulink 7.0 package. In both methods, the Individual Harmonic Distortion (IHD) and the current total harmonic distortion (ITHD) for the line, the non-linear and linear loads are computed for the harmonic components 5th, 7th, 11th and 13th. The results showed that for the analysis of the power system, numerical analysis based on the resultant harmonic curve method and the MatLab/Simulink as applied to the network all converged to highlight that harmonic components appear both on the line, the PCC and the linear load. This is due to the fact that the converter characteristic harmonics (5th, 7th, 11th, 13th…) are found in the network components (line, PCC, linear load…). The resultant harmonic curve method indicated a randomly distributed percentage IHD in different sections of the network for harmonic orders higher than 7th, whereas the Matlab/Simulink results normally show a non-uniform decay pattern of the IHD as the harmonic order increases within the respective section of the network.

Subjects/Keywords: Electric power systems; Harmonics (Electric waves); Electric power distribution; Electric networks

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kasemuana Matototo, S. (2014). A comprehensive study of power system harmonics. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/10309

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kasemuana Matototo, Seraphin. “A comprehensive study of power system harmonics.” 2014. Thesis, University of Johannesburg. Accessed January 22, 2021. http://hdl.handle.net/10210/10309.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kasemuana Matototo, Seraphin. “A comprehensive study of power system harmonics.” 2014. Web. 22 Jan 2021.

Vancouver:

Kasemuana Matototo S. A comprehensive study of power system harmonics. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10210/10309.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kasemuana Matototo S. A comprehensive study of power system harmonics. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/10309

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

28. Lago-Gonzalez, Alex. Reliability evaluation of electric power generation systems including unconventional energy sources.

Degree: MS, electrical engineering, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1984-THESIS-L177

Subjects/Keywords: electrical engineering.; Major electrical engineering.; Electric power systems - Reliability.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lago-Gonzalez, A. (2012). Reliability evaluation of electric power generation systems including unconventional energy sources. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1984-THESIS-L177

Chicago Manual of Style (16^th Edition):

Lago-Gonzalez, Alex. “Reliability evaluation of electric power generation systems including unconventional energy sources.” 2012. Masters Thesis, Texas A&M University. Accessed January 22, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-1984-THESIS-L177.

MLA Handbook (7^th Edition):

Lago-Gonzalez, Alex. “Reliability evaluation of electric power generation systems including unconventional energy sources.” 2012. Web. 22 Jan 2021.

Vancouver:

Lago-Gonzalez A. Reliability evaluation of electric power generation systems including unconventional energy sources. [Internet] [Masters thesis]. Texas A&M University; 2012. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1984-THESIS-L177.

Council of Science Editors:

Lago-Gonzalez A. Reliability evaluation of electric power generation systems including unconventional energy sources. [Masters Thesis]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1984-THESIS-L177

Cape Peninsula University of Technology

29. Mthunzi, Everett Mondliwethu. Performance analysis of a protection scheme based on P-class synchrophasor measurements .

Degree: 2016, Cape Peninsula University of Technology

URL: http://etd.cput.ac.za/handle/20.500.11838/2378

► Power grid and system protection advancement greatly depend on technological advances. Advent technologies like digital microprocessor type protective relays facilitate paradigm shifts, providing inimitable beneficial… (more)

▼ Power grid and system protection advancement greatly depend on technological advances. Advent technologies like digital microprocessor type protective relays facilitate paradigm shifts, providing inimitable beneficial engineering adaptations. Phasor measuring technology provides one such technological advance. The onset and rapid development of the Phasor Measuring Unit (PMU) provides an excellent platform for phasor-based, power system engineering. Power transmission constitutes a critical section in the electric power system. The power system transmission lines are susceptible to faults which require instant isolation to establish and maintain consistent system stability. This research focuses on the study of transmission line protection based on P-Class synchrophasor measurements. The IEEE C37.238-2011 Precision Time Protocol (PTP) paradigm shift facilitates practical application of synchrophasors in protection schemes. Synchrophasor procession and accurate data alignment over wide areas support the hypothesis of a phasor-based transmission line differential protection. This research aims to directly implement P-Class synchrophasors in transmission line differential protection, employing synchrophasors to determine fault conditions and administer corresponding protective actions in wide area transmission lines. The research also aims to evaluate the operational characteristics of the synchrophasor-based transmission line differential protection scheme. The research deliverables include a laboratory scale Test-bench that implements the PMU-based transmission line differential protection scheme, and a differential protection utility software solution that follows guidelines specified by the C37.118-2011 standard for synchrophasors. The findings stand to evaluate performance of the PMU-based line differential protection scheme, verifying the protection model as an alternate, practical and feasible backup protection solution. The research deliverables include a synchrophasor-based current differential algorithm, software utility for implementing the PMU-based protection scheme and a Test-bench for concept and feasibility validation.

Subjects/Keywords: Electric power transmission; Electric power systems – Measurement; Electric lines – Protection; Electric power systems – Standards

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Mthunzi, E. M. (2016). Performance analysis of a protection scheme based on P-class synchrophasor measurements . (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/2378

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mthunzi, Everett Mondliwethu. “Performance analysis of a protection scheme based on P-class synchrophasor measurements .” 2016. Thesis, Cape Peninsula University of Technology. Accessed January 22, 2021. http://etd.cput.ac.za/handle/20.500.11838/2378.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mthunzi, Everett Mondliwethu. “Performance analysis of a protection scheme based on P-class synchrophasor measurements .” 2016. Web. 22 Jan 2021.

Vancouver:

Mthunzi EM. Performance analysis of a protection scheme based on P-class synchrophasor measurements . [Internet] [Thesis]. Cape Peninsula University of Technology; 2016. [cited 2021 Jan 22]. Available from: http://etd.cput.ac.za/handle/20.500.11838/2378.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mthunzi EM. Performance analysis of a protection scheme based on P-class synchrophasor measurements . [Thesis]. Cape Peninsula University of Technology; 2016. Available from: http://etd.cput.ac.za/handle/20.500.11838/2378

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade Estadual de Campinas

30. Barbosa, Carlos David Franco, 1956-. Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability.

Degree: 2011, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258416

► Abstract: This thesis has as objective to study electricity transmission expansion planning In re-structured markets, both traditional as well as with technological innovations. In the… (more)

Subjects/Keywords: Energia elétrica - Transmissão; Cabos elétricos - Localização de falhas; Cabos elétricos; Sistemas de energia elétrica - Confiabilidade; Electrical energy transmission; Electric cables - Troubleshooting; Electric cables; Electric power systems - Reliability

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Barbosa, Carlos David Franco, 1. (2011). Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/258416

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Barbosa, Carlos David Franco, 1956-. “Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability.” 2011. Thesis, Universidade Estadual de Campinas. Accessed January 22, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258416.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Barbosa, Carlos David Franco, 1956-. “Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability.” 2011. Web. 22 Jan 2021.

Vancouver:

Barbosa, Carlos David Franco 1. Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability. [Internet] [Thesis]. Universidade Estadual de Campinas; 2011. [cited 2021 Jan 22]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258416.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Barbosa, Carlos David Franco 1. Impactos do desempenho das emendas dos cabos de linhas de transmissão na confiabilidade de redes elétricas: Transmission lines cable splices performance impacts on electrical network reliability. [Thesis]. Universidade Estadual de Campinas; 2011. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/258416

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations