事故中双跳圈开关操作回路的电源分析  

Power Supply Analysis for Switch Operating Circuit of Redundant Trip Coil in Accident

作　　者：罗永刚[1] 薛永原 龚在礼[1] 

机构地区：[1]四川电力职业技术学院,四川成都610072 [2]四川省超高压运检公司西昌中心,四川西昌615000

出　　处：《四川电力技术》2010年第3期47-49,55,共4页Sichuan Electric Power Technology

摘　　要：着重介绍了220 kV及以上具有双跳圈的开关操作回路,因设计考虑不合理,使用反向二极管隔离两路直流操作电源,造成电气上不完全独立,致使操作直流电源时控制回路存在互相干扰,引起开关误动的实例。并提出了解决的方法和防止开关误动的措施,这对提高供电的可靠性,具有一定的指导意义。An example is described that because of the unreasonable design,in the switch operating circuit with redundant trip coil in 220 kV power grid and above,using backward diodes to isolate the operational power supplies of two-way direct current will cause the incomplete independence electrically,so there are existing mutual interference in control circuit when operating DC power supply and it will lead to miss operation of switch.The solutions and measures are put forward to prevent the miss operation of switch,which is helpful for improving the reliability of power supply.

关 键 词：双跳圈开关 操作回路 两路电源 开关误动 

分 类 号：TM571[电气工程—电器]