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Real Time Operation Strategy Of Charging Station Based On Electric Vehicle Schedulable Time

Electric vehicle charging station connected with renewable energies like wind and photovoltaic is an effective form of coupling electric vehicle's mobile energy storage with wind and photovoltaic outputs. In order to further improve the economic operation benefits of this type of electric vehicle charging station and also ensure the operation stability of power grid, a real-time operation strategy is proposed. Firstly, based on the concept of residual schedulable time, a chargeable demand boundary model of charging station is proposed; Secondly, the relationship among electric vehicle, wind power generation system and photovoltaic power generation system in charging station is analyzed, and a real-time optimization model of charging station is established to maximize the proportion of wind and photovoltaic consumption; Thirdly, after obtaining the total guiding charging power command of electric vehicles in this dispatching period, based on the principle of meeting the charging needs of electric vehicle users, considering the characteristics of travel randomness, a real-time power allocation strategy is proposed, and the charging behavior of randomly connected electric vehicles during the dispatching command is controlled. The deviation between the actual total charging power and the issued total guiding charging power command is reduced; Finally, an example is given to verify the effectiveness of the proposed real-time operation strategy.