线路故障重合后主变差流速断保护动作原因分析  

Analysis on Transformer Diffrential fast Relay Misoperation during Line Reclosed

作　　者：郭耀珠[1] 石光[1] 崔敏 

机构地区：[1]河南电力试验研究院,河南郑州450052 [2]焦作电厂,河南焦作454100

出　　处：《河南电力》2008年第1期26-27,共2页Henan Electric Power

摘　　要：近几年,逐渐出现线路重合于永久性故障时,主变差流速断保护动作事件。文章对线路故障重合后主变差流速断保护误动事件的原因进行了分析介绍,指出了变压器保护投运前应开展的工作,并对变压器保护用CT选择提出了一些浅见。In recent years, transformer diffrential fast relay misoperated during line reclosed, and the same misoperation occured over and over again.This paper analyzes the misoperating reason and pointed out what must be done before transformer diffrential relay put to use.Some Simple suggestions about choosing CT are presented as well.

关 键 词：主变 差流速断保护 CT饱和 

分 类 号：TM774[电气工程—电力系统及自动化]