Research on Frequency Control Strategy and Standardization based on Virtual Synchronous Charging and Discharging of Electric Vehicles

With the rapid development of renewable energy, the power system faces increasing frequency fluctuation issues, and traditional synchronous generators are gradually unable to meet the demand for frequency regulation. Electric vehicles (EVs), as an emerging flexible load resource, can participate in grid frequency regulation due to their adjustable charging and discharging characteristics. This paper establishes a model of an EV fleet participating in frequency regulation based on virtual synchronous charging and discharging technology for electric vehicles. First, the basic principles of virtual synchronous charging and discharging and their role in grid frequency regulation are analyzed. Then, a frequency control strategy for electric vehicles based on the virtual synchronous generator model is proposed, and the performance of this strategy under different grid operating conditions is studied. Finally, the paper addresses the standardization issue of virtual synchronous charging and discharging for electric vehicles and proposes corresponding technical requirements and implementation plans. Experimental results show that the virtual synchronous charging and discharging technology for electric vehicles can effectively improve grid stability and lay the foundation for the standardization of EV frequency control.