一起220kV电流互感器铁芯故障分析  

Analysis of a 220 kV Current Transformer Iron Core Fault

作　　者：陈志勇 刘晓波 张占元 武向璐 李宝权 张佳羽 CHEN Zhiyong;LIU Xiaobo;ZHANG Zhanyuan;WU Xianglu;LI Baoquan;ZHANG Jiayu(Ulanqab Power Supply Company of Inner Mongolia Power Group,Ulanqab 012000,China;Bayannur Power Supply Company of Inner Mongolia Power Group,Bayannur 015000,China)

机构地区：[1]内蒙古电力集团乌兰察布供电公司,内蒙古乌兰察布012000 [2]内蒙古电力集团巴彦淖尔供电公司,内蒙古巴彦淖尔015000

出　　处：《山东电力高等专科学校学报》2025年第1期7-11,共5页Journal of Shandong Electric Power College

摘　　要：针对一起220 kV电流互感器膨胀器异常顶起故障,首先进行了油色谱分析,采用特征气体法及三比值法,初步判断电流互感器内部发生低能放电。然后进行了击穿电压、绝缘电阻、介质损耗因数、局部放电等试验,根据试验结果判断该电流互感器存在绝缘故障。最后对故障电流互感器进行解体检查,确定了故障位置,明确了故障原因,并提出了防范同类故障再次发生的措施。In allusion to a 220 kV current transformer expander abnormal jacking fault,first the oil chromatography analysis is carried out,and the preliminary judgment is made that low-energy discharge occurs inside the current transformer according to the characteristic gas method and the three-ratio method.Then tests such as breakdown voltage,insulation resistance,dielectric loss factor and partial discharge are carried out,and the results show that the current transformer suffers from insulation fault.At last,the faulty current transformer is disassembled and inspected,the fault location is determined,the cause of the fault is identified,and the measures to prevent the recurrence of similar faults are put forward.

关 键 词：电流互感器 油色谱分析 铁芯 局部放电检测 

分 类 号：TM452[电气工程—电器]