变电站雷电侵入波过电压防护的研究

Research on Overvoltage Protection of Lightning Surge in Substation

雷电侵入波对变电站内的设备会带来严重危害,为对其进行研究,根据工程实例做出500kV电压等级变电站主接线的计算网络,并通过PSCAD软件仿真出在雷电波侵入时的变电站内设备的雷电暂态响应特性,设计了不同的避雷器配置的保护方案,并对几个方案进行仿真计算,得出了变电站设备过电压最大值和保护裕度,并选出最佳方案。

The lightning invasion wave on equipment in the substation cause serious harm,in order to research it,calculation network of 500kV transformer substation main wiring is made according to engineering practice,and utilizing the PSCAD software to simulate transient response characteristic of thunder of the substation equipment,different protection schemes are designed,and conducting the simulation,the maximum protection margin of the substation equipment in over voltage are obtained,and select the best scheme.