电动汽车对低压配电网的影响

Effect of Electric Vehicle on Low Voltage Networks

近年来,人们对环境和能源问题的关注,使电动汽车技术发展迅速。可以预见未来大规模电动汽车的使用将给电网带来重大影响。本文仿真分析了电动汽车在无序充电、有序充电模式以及V2G模式下对低压配电网的影响。仿真结果表明:若不对其充电进行调控,则可能会增大电力峰荷,导致变电容量需求增加;若充电管理计划得当,并充分利用V2G技术,则可有效调整负荷曲线,满足现有变电容量,并可消纳过剩可再生能源。

In recent years, the electric vehicle technology has been developing rapidly due to the concerns for the environment and energy. This will bring major impacts on the grid. The effects of electric vehicle on low voltage network are analyzed in this paper with simulations in uncontrolled charging mode, coordinated charging mode and V2 G mode. The results show that the electrical peak demand may increase when the charging is without regulation, which will cause the increased capacity demand for substations. If the charging management plans properly and the V2 G technology can be fully used, the load curve can be adjusted effectively without increasing substation capacity. In addition, the oversupply of renewables can also be consumed.