Charging control system of electric vehicles orientating to local distribution network

A charging control system model is developed based on the characteristics of local distribution network to meet the demands of both power grid and EV(Electric Vehicle) user, which includes three modules: TOU(Time-Of-Use) charging period division module, coordinated charging module and user response evaluation module. Combined with the results of user response evaluation module, the period division module applies the methods of fuzzy cluster and curve feature identification to divide the periods of TOU charging price, based on which, the coordinated charging module manages EV charging with three control objectives: minimum customer charging fee, minimum load curve variance and earliest charging service. Simulative results indicate that, compared with the uncoordinated charging management, users' charging demand is met with the minimum charging fee and the EV charging load is reasonably shifted from daily load peak period to valley period.