It is composed of a reactor in series with a compensation capacitor, which is in parallel to a by-pass reactor controlled by a GTO pair.

• 正常情况下,由电容和限流电感对线路进行串联补偿;发生故障时,根据短路电流的大小控制门极可关断晶闸管的导通角,改变投入的限流电抗,达到限流目的。