电动汽车V2G及B2G机电动态建模及应用

摘要

With the development of electric vehicles,achieving smooth access,peak load shifting and high energy effi?ciency of distributed power supplies using vehicle to grid(V2G)and battery to grid(B2G)is a hotspot of current re?search.However,there is a lack of an electric vehicle V2G+B2G model for power system simulation.In this paper,the working strategy for intelligent combination of V2G and B2G is put forward based on multi-mode energy supply method of micro-grid.Meanwhile,the B2G+V2G digital simulation model is set up based on the Matlab/Simulink platform, and a simulation experiment of voltage drop fault is carried out at the point of common coupling.According to the simula?tion data,an electromechanical dynamic model of the interaction between electric vehicle transposition stations and power grid is proposed,and the parameter identification as well as the verification of the validity and applicability of the established model is conducted using genetic algorithm.Results show that the electromechanical dynamic model of V2G and B2G has better applicability and application values in simulations.%随着电动汽车的发展,利用V2G(vehicle to grid)和B2G(battery to grid)实现分布式电源的平滑接入、削峰填谷、提高能量利用率,是当前研究的热点,但缺乏一种适用于电力系统仿真的电动汽车V2G+B2G模型.基于微电网多模能源供给方式,提出了V2G和B2G智能结合的工作策略,同时基于Matlab/Simulink平台搭建了V2G+B2G的数字仿真模型,在公共接入点进行电压跌落故障仿真实验.根据动态仿真实验数据,提出了电动汽车换电站与电网互动的机电动态模型,并采用遗传算法进行了参数辨识和模型的有效性、适用性验证,结果证明电动汽车V2G与B2G机电动态模型具有较好的适用性和仿真应用价值.