WXH-110系列微机线路保护装置改造方案  

WXH-110 series microprocessor-based transmission line protection

作　　者：刘军 库永恒 刘丙申 陈喜峰 孙强宇 李绍东 

机构地区：[1]许昌供电公司,河南许昌461000

出　　处：《电力自动化设备》2006年第12期79-81,共3页Electric Power Automation Equipment

摘　　要：WXH-110系列微机线路保护的遥控合闸与保护合闸共用合闸回路,不能满足电力现场操作规程要求遥控合闸时退出重合闸保护。提出了从保护装置内部把遥控合闸回路与保护合闸回路分开和改变保护装置外部二次回路使遥控合闸时开入重合闸闭锁量闭锁重合闸2种改造方案,并从保护的原理、二次回路、可靠性和方案的可操作性等多方面作出比较,选择了最优的外部改造方案并实施了技术改造。实际检验结果表明改造方案的有效性。WXH-110 series microprocessor- based transmission line protections apply a common closing circuit for both remote control and protection ,the requirement of the electrical field operation regulation is thus unsatisfied,i.e, the reclose protection should be disabled during remote control close. Two improvement schemes are provided：separate remote control and protection close circuits interhally;a binary input signal from external secondary circuit blocks reclose protection during remote control reliability and close. Two schemes are compared from protection principle,secondary circuits, maneuverability,and the external improvement scheme is chosen and implemented The field test shows its effectiveness.

关 键 词：合闸回路 操作回路 监护 遥控 

分 类 号：TM773[电气工程—电力系统及自动化]