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Delft University of Technology

1. Wahid, Markos (author). Comparing electric vehicle charging strategies in stochastic microgrid optimization.

Degree: 2019, Delft University of Technology

Renewable energy sources, e.g. solar energy and wind energy, have gained popularity as an alternative means of energy production as they do not reinforce global warming. In addition, more and more electrical appliances (e.g. electric vehicles, induction cookers, and heat pumps) are used as a substitute for appliances that need non-renewable energy sources. This increase in the use of renewable energy resources pushes the electricity grid to its limits due to new induced load peaks. The grid is not designed for these developments and as a result, asset deterioration, higher transport losses, and outages are expected to occur. The most straightforward solution for the distributed system operator, i.e. the operating manager of the distribution network, is to expand the grid. However, grid expansion is a costly operation and there are additional promising methods to decrease grid load peaks, e.g. by using different charging strategies for electric vehicles. The conventional charging strategy for electric vehicles is uncontrolled charging. With uncontrolled charging, the charging of the electric vehicle immediately commences once a connection with the charging pole is established. The smart charging strategy, however, is able to delay the charging moment to a more optimal time instant in view of, e.g. variable electricity prices. The vehicle-to-home (V2H) charging strategy is similar to smart charging, but in addition, the V2H strategy allows the electric vehicle to discharge electricity to power a nearby residential home. This research aims to compare smart charging and V2H charging on their economical effects for their users. The charging strategies are implemented using two control algorithms: a rule-based controller and a model predictive control (MPC) algorithm. The rule-based controller is implemented due to its simplicity and the MPC algorithm is used for its ability to take into account predictions of system related variables, e.g. household loads. The MPC algorithm is implemented with two different forecasts namely, perfect information, i.e. uncertain variables are forecasted perfectly, and certainty equivalent, i.e. uncertain variables are predicted using a persistence forecast model. The persistence forecast model assumes that the future values of an uncertain variable remain equal to the latest measurements, e.g. the solar generation of tomorrow is expected to be equal to that of today. The control problem is non-linear as an electric vehicle behaves differently depending on its status, e.g. driving or charging. The control problem is therefore reformulated into a mixed logical dynamical framework such that it can be solved efficiently using mixed integer linear programming. An extensive comparison in performance for a microgrid case study is done using real data of solar generation, electric vehicles, and household loads for simulation. The results show that the V2H charging strategy can outperform smart charging by reducing both the peak loads and the electricity costs. However, the V2H strategy only gives a… Advisors/Committee Members: Pippia, Tomas (mentor), De Schutter, Bart (graduation committee), van Voorden, Arjan (mentor), Cvetkovic, Milos (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Microgrid; MPC; Scenario-based MPC; V2H; Smart Charging; scenario generation; persistence forcast model; EV; Mixed Logical Dynamical Model

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

APA (6th Edition):

Wahid, M. (. (2019). Comparing electric vehicle charging strategies in stochastic microgrid optimization. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:386aaa63-54f7-446e-8cde-68e74df5d0cc

Chicago Manual of Style (16th Edition):

Wahid, Markos (author). “Comparing electric vehicle charging strategies in stochastic microgrid optimization.” 2019. Masters Thesis, Delft University of Technology. Accessed April 17, 2021. http://resolver.tudelft.nl/uuid:386aaa63-54f7-446e-8cde-68e74df5d0cc.

MLA Handbook (7th Edition):

Wahid, Markos (author). “Comparing electric vehicle charging strategies in stochastic microgrid optimization.” 2019. Web. 17 Apr 2021.

Vancouver:

Wahid M(. Comparing electric vehicle charging strategies in stochastic microgrid optimization. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 17]. Available from: http://resolver.tudelft.nl/uuid:386aaa63-54f7-446e-8cde-68e74df5d0cc.

Council of Science Editors:

Wahid M(. Comparing electric vehicle charging strategies in stochastic microgrid optimization. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:386aaa63-54f7-446e-8cde-68e74df5d0cc


Delft University of Technology

2. Sturmans, Simon (author). Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept.

Degree: 2019, Delft University of Technology

Vehicle-2-Home (V2H) is a concept in which an electric vehicle (EV) is able to charge and discharge its battery pack to the building it is connected to. This concept enables EVs to store surplus solar energy, which is produced during the daytime and return in to buildings during the night time. For this system to work (cost) efficiently, the EVs location during the day must match the location of surplus solar energy. Also, at night, the EVs must discharge this electricity evenly over an area to reduce the strain on the electricity distribution grid. This thesis has analysed whether there exists a match between the spatial distribution of solar panels and EVs in the Amsterdam region under growth scenarios until 2040. Advisors/Committee Members: Annema, Jan Anne (mentor), Lukszo, Zofia (graduation committee), Farahani, Samira S. (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: V2H; Spatial distribution; Solar energy; Electric vehicles; Case study; Cost analysis

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

APA (6th Edition):

Sturmans, S. (. (2019). Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b9e0db37-97a1-4c7a-aa9f-09514ca49438

Chicago Manual of Style (16th Edition):

Sturmans, Simon (author). “Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept.” 2019. Masters Thesis, Delft University of Technology. Accessed April 17, 2021. http://resolver.tudelft.nl/uuid:b9e0db37-97a1-4c7a-aa9f-09514ca49438.

MLA Handbook (7th Edition):

Sturmans, Simon (author). “Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept.” 2019. Web. 17 Apr 2021.

Vancouver:

Sturmans S(. Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Apr 17]. Available from: http://resolver.tudelft.nl/uuid:b9e0db37-97a1-4c7a-aa9f-09514ca49438.

Council of Science Editors:

Sturmans S(. Using Electric Vehicles to Store Solar Energy: The Spatial Distribution Problem: A quantitative analysis on the effects of the spatial distribution of solar panels and electric vehicles on the cost-effectiveness of the Vehicle-2-Home concept. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:b9e0db37-97a1-4c7a-aa9f-09514ca49438

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