110kV变电站控制回路中闭锁信号混乱原因的分析

Analysis of the signal fault and confusion in the substation control closed loop

在断路器控制回路的压力闭锁回路,独立信号上传过程中误报、错报、混乱等现象的出现,对集控站监控人员的判断造成影响。为减轻监控人员工作压力,文章针对变电站断路器控制回路中的压力闭锁回路及弹簧储能闭锁回路存在的信号混乱问题,采用对比常用的正闭锁、负闭锁回路,找出闭锁继电器不独立是造成此问题的主要原因,并提出修正后的正闭锁控制回路的解决问题方案。

With the development of the automatic technology, the unmanned substation can realize significant economic benefits. And the independently and rightly upload of the measurement and control signal is extremely important. Particularly in control circuit of the substation breaker, the wrong and chaotic signal uploading will impact on the monitor. Considering the problem of signal confusion in pressure closed loop and energy storage closed loop, to alleviate the work pressure of the monitor, this paper contrasts the common positive closed loop and the negative closed loop respectively, identifies cause of the problem which is closed relays are not independent and then proposes solutions.