大规模电动汽车接入的电力系统稳定性分析

Stability analysis of power system consider the large-scale electric vehicle access

随着电动汽车技术成熟度的不断提高,特别对环境保护要求的不断提高,电动汽车有逐步取代燃油汽车的趋势。大量电动汽车投入使用之后必然会带来大量的充电负荷,其随机充放电行为将为城市电网的安全稳定运行带来新的挑战,采用分块解耦动态仿真作为工具,对考虑大规模电动汽车接入的电力系统稳定性进行分析,不仅可以提高稳定性分析结果的精度,还可以通过先验仿真得到电池集中充电站最优接入方案,从而提高电力系统的稳定性。

With the constant improvement of the electric vehicle technology maturity, especially for the requirement of environmental protection is increasing, the electric car has a tendency to gradually replace fuel cars. A large number of electric cars put into use after load brings a lot of charge, the random charge and discharge behavior will bring the city new challenge to the safe and stable operation of power network, this paper uses the block decoupling dynamic simulation as a tool, to consider the large-scale electric vehicle access to the power grid stability analysis, not only can improve the accuracy of the stability analysis results ,but also can obtain battery concentrated charging station optimal access plan by a priori simulation, so as to improve the stability of power grid.