并联电容补偿装置是运作操作最频繁的设备之一 ,合闸过电压有时会导致补偿电容器、电抗器烧损。本文对合闸暂态过程进行了仿真研究 ,结果表明 :电容器、电抗器上的过电压幅值很高 ,而且不在同一时刻出现。因此 ,母线上的避雷器不一定能完全保护并联补偿装置 ,应采取专门的措施来限制过电压。 Shunt capacitance compensation device is one of the most frequently operated devices. Closing over-voltage sometimes causes compensation capacitor and reactor to burn out. The transient process of closing is simulated in this paper. The results show that the overvoltage amplitude of capacitors and reactors is very high and not at the same time. Therefore, the arrester on the bus may not be able to completely protect the parallel compensation device, should take special measures to limit the over-voltage.