Abstract:Based on the active charging response of electric vehicles, this paper proposes a collaborative planning model of “electric vehicle charging station-distribution network”. As a typical DC load, the electric vehicle has the characteristics of active response which can be used as a planning consideration factor to adjust the electricity price of the electric vehicle in a time-sharing manner. Guiding the user to actively respond to the change of the charging price, and shifting charging demand from peak to off-peak periods, which can reduce substation capacity. In addition, this paper uses DC feeders to replace part of AC feeders to meet the increased DC load in the grid, reducing feeder investment in the grid, as well as the total planning cost. In the end, the mixed integer linear programming method is used to solve the optimization problem through CPLEX, the 13-node distribution network system is used to compare and analyze the AC distribution network and AC-DC distribution network respectively, and the proposed method is verified.