It is composed of a fixed capacitor and several banks of thyristor switched capacitors which are parallel with a bypass reactor controlled by GTO.

• 正常时,通过投切不同的电容器组,按步长的方式来控制调整线路的补偿度;故障时,则通过和旁路电感相串联的可关断晶闸管(GTO)来控制其限流程度。