一起电流互感器绝缘故障引发停电事故的分析与处理  

Analysis and Treatment of a Power Failure Caused by Insulation Fault of Current Transformer

作　　者：李佳琪 咸日常[1] 张宁 李璨 郭洋 郝艳 LI Jia-qi;XIAN Ri-chang;ZHANG Ning;LI Can;GUO Yang;HAO Yan(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China;State Grid Shandong Electric Power Company Zibo Power Supply Company,Zibo 255000,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255000 [2]国网山东省电力公司淄博供电公司,山东淄博255000

出　　处：《变压器》2022年第2期51-55,共5页Transformer

摘　　要：本文介绍了一起干式电流互感器因高温、高负荷导致绝缘过热损坏,从而引起主变压器差动速断保护动作,变电站紧急拉路限电的事故。结合现场检查情况,对故障电流互感器进行绝缘试验并对保护动作原因进行分析。This paper introduces a dry current transformer insulation overheating damage due to high temperature and high load,which causes the differential quick-break protection action of the main transformer,resulting in the emergency power-limit accident of the substation.Combined with the on-site inspection,the insulation test of the fault current transformer is carried out and the reasons for the protection action are analyzed.

关 键 词：干式电流互感器 绝缘故障 继电保护 原因分析 处理 

分 类 号：TM452[电气工程—电器]