Coordination of multi charging station for Electric Vehicles and its utilization for vehicle to Grid scenario

Penetration of Electric Vehicles will demand a better infrastructure to accommodate the increasing burden of electrical loads on the distribution network. In this paper, a multi charging station has been proposed, which can handle a large fleet of Electric Vehicles without affecting the grid performance. Two levels of control have been designed. The first controller is, at the battery level which controls the charging/discharging (C_rate) of the batteries and second one is at the distribution node level which controls the flow of power between the grid and the charging station. Vehicle owner´s preferred minimum state of charge (SOC) and maximum allowable C_rate is taken into account while delivering power to the Grid. A practical distribution grid has been used to validate the results.