基于数字式线路保护测控装置的10 kV开关柜控制回路改进

Control Loop Improvement of 10 kV Cabinet Based on Digital Line Protection Device

针对220 kV大路变电站10 kV开关柜远方就地操作把手外部指示和送至遥控回路的信号不对应的问题,通过对断路器遥控和遥信回路进行改进,将送至保护装置中的远方就地把手状态信号的弱电开入接点与10 kV开关柜遥控和遥信回路相关联,确保了远方就地操作把手状态信号在遥控回路和遥信回路的一致性,既便于监控,又提高了设备运行的可靠性。

Aiming at non-correspondence between the out indacation and the signal delivered to the remote control loop of the remote local operating handle on the 10 kV cabinet in 220 kV Dalu Substation, carry out an improvement to the remote control loop and the remote signalling loop, through which the connection of the weak electricity in the protection device is associated with the the remote control loop and the remote signalling loop. The improvement realizes the coherence of the status signal between the remote control loop and the remote signalling loop, thus it is helpful to monitor easily and improve the reliability of the equipment operation.