220kV断路器液压机构二次回路隐患解决办法研究

On solution to hydraulic gear secondary circuit hidden danger on 220KV circuit breaker

采用液压机构的高压断路器普遍存在渗漏问题,若断路器不能将压力变化正确反馈给保护装置,将造成保护装置在故障情况下误动,严重时还会产生断路器着火或爆炸等重大事故,从而扩大停电范围,甚至引起系统瓦解。本文针对220kV断路器液压机构二次回路存在隐患问题,提出了具体的解决方法,提高了供电可靠性。

For the leakage of high - voltage circuit breaker with hydraulic mechanism, if the circuit breaker cannot have correct pressure change feedback to the protection device, it will cause the protection device work in case of malfunction, there will be a serious fire or a circuit breaker explosions and other major incidents, thereby expanding the scope of power failure, even lead to system collapse. In this paper, in terms of hidden danger existed in the second 220kV circuit breaker hydraulic mechanism, the author put forward specific solutions to improve the supply reliability.