Regulation Capability Evaluation Method of EV Clusters Considering Travel Demand

Abstract

Electric vehicles (EVs) can be used as load-side mobile energy storage resources to control the balance of power system supply and demand, so it is particularly important to evaluate the regulation capability of electric vehicle clusters. Firstly, this paper establishes an evaluation model for the regulation capability of EV clusters based on EV battery capacity limitations and user charging requirements. Secondly, after dispatching instructions from the power grid, the status of the electric vehicles at the station is classified. Thirdly, the time margin and the state-of-charge (SOC) margin are comprehensively considered to make dispatching plans for different status types of EVs. The regulation capability is dynamically updated in real time while tracking the dispatching instructions issued by the power grid. Finally, a simulation case of an EV cluster in an office area verifies the effectiveness of the EV cluster regulation capability evaluation model and grid dispatching strategy proposed in this paper.