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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。
For the old station transformation of the “four remote” substation, due to equipment limitations, the same period of closing can not be achieved remote control operation. According to the specific circuit breaker control principle, only increase the same period relays, low voltage relays, and in the remote closing circuit to increase the normally closed relay contacts, increase the voltage relay normally closed contacts, the two pairs of contacts and then , And then switch the operating power switch on the relay, the local operation will be changed directly from the local switching operation switch is completed, you can achieve the “four remote” substation remote control synchronization closing function. The actual operation proved that the program is simple, effective and practical.