关于继电保护装置重合闸灯亮的浅析

Analysis on the Lamp being Light When Relay Protector Reclosing

电力输电线路故障大部分都是单相接地,采用自动重合闸技术能极大地提高供电可靠性和电力系统稳定性。输电线路发生接地故障后,保护启动断开断路器,条件允许后进行重合闸启动。当重合闸启动后,保护装置面板上有指示灯表示发生重合闸。正常情况下,当保护跳闸后进行重合闸,保护装置重合闸灯会亮,但当手合、遥合、就地合后,重合闸不启动,重合闸灯不亮,但此时重合闸灯若点亮,说明此状态不正确,可能因为控制回路有问题或是重合闸灯回路选用的驱动继电不对应造成的,将会对电网运行监控造成混淆,影响电网稳定运行。

Most power transmission line faults are single-phase to earth. If automatic reclosing technology is adopted,power supply reliability and power system stability can be greatly inereased. When earth fault in the trausimission lines appears,the protection starts to turn off the circuit breaker. the reclosing starts after the condition is allowed. After the reclosing starts,the indicating lamp on the protector bourd shows reclosing. In normal conditions,the reclosing happens after protection trip,the reclosing lamp of the protector can turn on,but the reclosing lamp can not turn on by hand closing,remote closing,local closing when the reclosing does not start. If the reclosing lamp turn on at the same time,it shows that the state is not correct. There is something wrong with the control loop or driven relay used the reclosing lamp loop is not crresponding. This will cause confusion to the grid operation control,affecting grid stability operation.