220kV氧化锌避雷器泄漏电流异常现象分析及对策  

Analysis and Countermeasures of the Abnormal Leakage Current of 220 kV Zinc Oxide Arrester

作　　者：徐鹏 XU Peng(State Grid Jiangsu Electric PowerLimited Company Maintenance Branch Company,Nanjing 211102,China)

机构地区：[1]国网江苏省电力有限公司检修分公司,南京211102

出　　处：《电瓷避雷器》2021年第5期36-40,共5页Insulators and Surge Arresters

摘　　要：作为保护电网免受过电压侵害的重要电器,氧化锌避雷器在发、输、变、配电系统中应用较为普遍,其安全性能对维护网络可靠运行意义重大,在运氧化锌避雷器缺陷将对系统安全构成严重威胁。针对一起220 kV氧化锌避雷器例行试验过程中泄漏电流异常现象展开研究,通过试验诊断和解体检查对其泄漏电流异常原因进行分析,并分别从运维和试验角度出发提出合理化建议,为同类型设备的故障诊断和运行维护提供参考。Zinc oxide arrester is an important device used to protect the power grid from overvoltage. It is widely used in power generation, transmission, transformation and distribution systems. Its safety performance is of great significance to the maintenance of reliable operation of the power grid. The defect of Zinc oxide arrester in operation will pose a serious threat to the system safety. The author studies a leakage current abnormal phenomenon of 220 kV zinc oxide arrester, and diagnoses the cause of the abnormal leakage current through electrical tests and disassembly inspection. Some suggestions are put forward in terms of operation, maintenance and test, providing reference for fault diagnosis and operation maintenance of the same type of equipment.

关 键 词：氧化锌避雷器 泄漏电流 解体检查 运行维护 

分 类 号：TM862[电气工程—高电压与绝缘技术]