远方备自投在110kV变电站中的应用

目前110kV变电站普遍采用开环运行、环网布置的接线方式,就地备自投对开环点处实现备用电源自动投入存在着局限性。针对该局限性,现采用远方备自投方法,利用纵联通道,在两个串接的变电站之间交互状态和动作信息,并可对远方站内开关发送远方合闸命令。从而在出现因系统故障或是其它因素导致电源断开后,能最大程度上恢复供电,具有重大应用价值。

At present, the 110kV substation generally adopts the connection mode of open-loop operation and ring network arrangement, and there are limitations to realize the automatic input of standby power supply at the open loop point of local standby automatic switching. In view of this limitation, the remote standby automatic switching method is adopted, the longitudinal channel is used to interact the state and action information between the two connected substations, and the remote closing command can be sent to the switch in the remote station. Thus, after the power supply is disconnected due to system failure or other factors, the power supply can be restored to the maximum extent, which is of great application value.