浅谈保护装置压力监视回路的缺陷

Brief Discussion on Defect of Pressure Monitoring Circuit of Protection Equipment

总结多年来的工作经验,通过对继电保护二次回路中压力监视回路的深入研究分析,指出在新的线路保护设计规范推出后保护装置压力监视回路中的缺陷,即在第一组操作电源失电时,会造成两组操作回路同时断线,将断路器误闭锁,致使线路有故障时,断路器无法跳闸,并提出解决方案,即保护装置只闭锁重合闸,断路器分、合闸闭锁靠机构本体二次回路实施闭锁。

Summing up years of work experience,through the in-depth research and analysis of pressure monitoring circuit of relay secondary circuit,then pointing out that the defect of the pressure monitoring circuit of protection equipment after the introduction of the new line protection design standard promotes.Namely,when the first group operating power source loses the electricity,at the same time,it will result in two groups operating circuits broken line and mislocking the circuit breaker,then when the line has the breakdown,the breaker is unable to trip,and to propose solutions,namely the protection device is only blocking reclosing,and the implementation of blocking operations of the breaker depending on secondary circuit itself.