Conference paper
Response Accuracy and Tracking Errors with Decentralized Control of Commercial V2G Chargers
Department of Electrical Engineering, Technical University of Denmark1
Center for Electric Power and Energy, Centers, Technical University of Denmark2
Energy System Management, Center for Electric Power and Energy, Centers, Technical University of Denmark3
Distributed Energy Resources, Center for Electric Power and Energy, Centers, Technical University of Denmark4
There is a growing interest in using the flexibility of electric vehicles (EVs) to provide power system services, such as fast frequency regulation. Decentralized control is advocated due to its reliability and much lower communication requirements. A commonly used linear droop characteristic results in low average efficiencies, whereas controllers with 3 modes (idle, fully charging, fully discharging) result in large reserve errors when the aggregation size is small.
To address these issues, we propose a stochastic, decentralized controller with tunable response granularity which minimizes switching actions. The EV fleet operator can optimize the chargers’ performance according to the fleet size, the service error requirements, the average switching rate and the average efficiency.
We use real efficiency characteristics from EVs and chargers providing fast frequency regulation and we show that the proposed controller can significantly reduce reserve errors and increase efficiency for a given fleet size, while at the same time minimizing the switching actions.
Language: | English |
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Publisher: | IEEE |
Year: | 2018 |
Pages: | 1-7 |
Proceedings: | 20th Power Systems Computation Conference |
ISBN: | 1538615835 , 1910963097 , 1910963100 , 9781538615836 , 9781910963098 and 9781910963104 |
Types: | Conference paper |
DOI: | 10.23919/PSCC.2018.8442488 |
ORCIDs: | Ziras, Charalampos , Zecchino, Antonio and Marinelli, Mattia |
Decentralized control Electric vehicles Primary frequency control Stochastic control V2G chargers
EV fleet operator Frequency control Frequency measurement Inverters Reliability Switches V2G Chargers Vehicle-to-grid decentralised control decentralized control decentralized controller electric vehicles frequency control frequency regulation power grids power system services primary frequency control stochastic control stochastic controller vehicle-to-grid