Comparison of Electric Vehicle Charging Control Strategies for the Power System Primary Control

Achieving power balance is a common concern in power systems. Distributed generation and increasing generation unit sizes are causing pressure to add power system flexibility and improve the power balance maintaining. As a potential source of the flexibility, demand-side is constantly drawing more attention. This paper studies the utilization of electric vehicles (EV) in the power system primary frequency control, particularly in the event of a severe fault in a power system. To monitor and control EVs, a multi-agent system (MAS) is proposed. The main focus is to compare partially centralized and decentralized primary frequency control strategies for the MAS and consider the control delay effect on the performance of the partially centralized strategy. Results emphasize the importance of short control delay as well as the presence of a supervisory entity to monitor the available regulation power