Study on electric vehicles cluster model considering load response of power grid

Large scale of electric vehicles integration will pose inevitable impacts on the planning and operation of power system in the future. Considering electric vehicles as movable and distributed storage units, a cluster model, in which the electric vehicles participate load response of power grid, is built. In this paper, coordinated charging modes and charging time of different kinds of EVs are proposed. The Monte Carlo simulation is applied to determine the starting state of charge(SOC) and the initial charging time, etc. Taking the daily load curve in a certain day for example, the impacts of power demand of EVs in different scales on original load curve are calculated. The results show that the natural charging-discharging characteristic of EVs can be controlled to discharge during the peak load time and charge during the load valley.