A coordinated charging system model based on distributed control for largescale electric vehicles (EVs) is proposed in this work. The coordinated charging system is composed of EV’s centralized regulation center (ERC) and numerous distributed charging control units (DCUs). When an EV is plugged in the distribution network

the DCU calculates its best charging start time according to the forecasted load data and plugged EVs’ charging schedules before this one broadcast by ERC

and then uploads its charging plan to ERC. Take the IEEE 33bus distribution network as an example

the coordinated charging action is simulated under different conditions including normal

communication fault and load forecasting error circumstances. The simulation results show that the distributed control coordinated charging model is capable of achieving a perfect charging load profile plus a strong antiinterference ability. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2011AA05A109) and National Natural Science Foundation of China (No. 51007088).