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Forecasting the power supply capacity from the public grid and the power storage capacity in a public EV charging station is an important work when making a construction plan of the charging station. The power flow diagrams of charging station in different load periods and their electric quantity equations are given. The mathematical model considering the power dissipation in every subsystem of charging station is established. Through simulation calculating the Class I EV charging station which defined in the Beijing local standard about the public EV charging station the optimal allocation between the power supply capacity and the power storage capacity under the certain scale of charging station is known. The simulation example also shows that the calculating results are credible.
Date of Conference: 15-17 April 2011