通道延时不一致造成的线路纵差保护误动分析  

Analysis of a Maloperation of Line Longitudinal Differential Protection Caused by Inconsistent Channel Delay

作　　者：孙立新[1] SUN Lixin(State Grid Zibo Power Supply Company,Zibo 255000,China)

机构地区：[1]国网淄博供电公司,山东淄博255000

出　　处：《电工技术》2024年第24期267-269,272,共4页Electric Engineering

摘　　要：线路纵联差动保护要求两侧电流采样同步,因此基于通道数据同步方法的光纤通道收发路由必须一致,这是差动保护正常工作的关键。分析一起通道往返延时不一致造成线路纵联差动保护不正确动作事件,找出问题所在,提出改进措施。Line longitudinal differential protection requires synchronous current sampling on both sides,therefore,the fiber channel transceiver routing based on channel data synchronization method shall be consistent,which is the key to the normal operation of differential protection.By analyzing an incorrect operation of line longitudinal differential protection caused by inconsistent channel round-trip delay,the existing problems are identified and improvement measures are proposed.

关 键 词：通道延时 纵联差动保护 保护误动 光纤保护 

分 类 号：TM588[电气工程—电器]