"四遥"站遥控检同期合闸功能的实现

对于旧站改造的“四遥”变电站 ,由于设备的限制 ,同期合闸无法实现遥控操作。根据具体的断路器控制原理 ,只需增加同期继电器、低电压继电器各一个 ,且在遥控合闸回路里增加同期继电器的常闭接点 ,增加电压继电器的常闭接点 ,将这两对接点并接 ,再改接合闸继电器的操作电源 ,将就地操作改为直接由就地分合闸操作开关完成 ,就可实现“四遥”变电站的遥控检同期合闸功能。实际运行情况证明 ,该方案简单有效 ,切实可行。

Realization of remote switch-on function with synchronism check

For the retrofitting substations,the remote switch on operation with synchronism check can not be carried out because of the equipment limitation.Based on breaker control principle and added with a synchronism relay and a low voltage relay,the function of remote switch on operation with synchronism check is realized.The normally closed contact of the synchronism relay and the normally closed contact of voltage relay are inserted in parallel into the remote switch on circuit,the operating power of switch on relay is reconnected,and the local switching operation is directly carried out.The practice shows that this approach is simple and effective.