电动汽车集群并网后对不平衡配电网的影响研究OA

After large-scale electric vehicle(EV)clusters are connected to the grid,their random and disorderly charging and discharging behaviors pose new challenges to the safe and stable operation of urban distribution grids.The application of V2G(vehicle to grid)technology enables bidirectional interaction between EV and the grid,endowing them with the dual attributes of controllable load and energy storage.This characteristic can be utilized to enhance the operating conditions of the grid.For IEEE13 unbalanced distribution network,OpenDSS and MATLAB are used to model the EV cluster as an energy storage ele-ment.Genetic algorithm is used to optimize the load curve shape of the EV cluster.The load balancing is achieved through the comprehensive application of V2G and G2V(grid to vehicle).The role of EV clusters in peak shaving,load curve optimization and imbalance adjustment of unbalanced distribution network under V2G and G2V operating modes is analyzed through simula-tion examples,which can provide reference for the operation optimization of EV and unbalanced distribution network,as well as the multi scenario improvement after EV grid connection.