220kV线路纵联距离保护误动事故分析  

Analysis of Pilot Distance Protection Misoperation of 220 kV Transmission Line

作　　者：周卫[1] 李秋霞[1] 

机构地区：[1]广西电网公司电力科学研究院,南宁530023

出　　处：《广西电力》2012年第3期54-57,共4页Guangxi Electric Power

摘　　要：利用现场故障录波装置的录波报告,对一起220 kV线路纵联距离保护区外故障时误动事故进行分析。判断出保护误动是因为纵联距离保护通道异常。通过一系列严谨细致的检查和试验,找出造成通道异常的直接原因是线路一侧TCF-10B型收发信机RF插件元器件性能不稳定,导致闭锁信号波形异常。提出了相应的防范和处理措施。A misoperation accident of 220 kV transmission line pilot distance protection by external fault is analyzed based on the field recorder reports from fault recorder, and it is estimated that the channel abnormity of pilot distance protection led to the misoperation. By a series of precise and careful inspection and test, it is found that the direct reason is the instable component performance of RF plugin in TCF-10B type transceiver which led to the waveform abnormity of blocking signal. The corresponding prevention and treatment measures are proposed.

关 键 词：距离保护 录波分析 通道异常 RF插件 

分 类 号：TM773[电气工程—电力系统及自动化]