V2G Potential Evaluation Method Considering Spatiotemporal Transfer Features of Electric Vehicles

Referring to the problem of increasing load fluctuation caused by random grid-connected charging of large-scale electric vehicles, this paper proposes an evaluation method considering V2G response potential of electric vehicles. Based on the key factors of electric vehicles' participation in power grid dispatching, a clustering method of electric vehicles participating in V2G regarding the battery state of charge (SOC) and vehicle residence time is proposed in this paper, and a calculation model for evaluating the potential of electric vehicles participating in V2G is also established. The effectiveness of the proposed method is verified by multi-scenario comparative analysis, which provides a basis for optimizing and regulating the charging load of electric vehicles through load aggregators on the premise of meeting the charging demand of electric vehicles.