某500 kV变电站66 kV干式电抗器故障分析  

Analysis of 66 kV Dry-Type Reactor Fault in 500 kV Substation

作　　者：范乃心 李岩 曲德浩 FAN Naixin;LI Yan;QU Dehao(Ultra High Voltage Branch of State Grid Liaoning Electric Power Co.,Ltd.,Shenyang,Liaoning 110006,China;State Grid Dalian Power Supply Company,Dalian,Liaoning 116600,China)

机构地区：[1]国网辽宁省电力有限公司超高压分公司,辽宁沈阳110006 [2]国网大连供电公司,辽宁大连116600

出　　处：《东北电力技术》2024年第11期50-57,62,共9页Northeast Electric Power Technology

摘　　要：针对4起66 kV干式电抗器故障情况,通过返厂解体和试验分析,发现故障原因主要包括电抗器表面污物(如鸟屎等)形成短路通道、电抗器内部绕包层外绝缘厚度较薄且不均匀、设计对环境因素考虑不够等。根据故障原因提出防绝缘击穿措施,提高了干式电抗器安全运行水平。According to the faults of four 66 kV dry-type reactors,through disassembly and experimental analysis upon returning to the factory,it is found that the main causes of the malfunction includes the formation of a short circuit channel due to surface dirt(such as bird droppings)on the reactor,the thin and uneven insulation thickness of the inner winding layer and outer layer of the reactor,and insufficient consideration of environmental factors in the design.According to the cause of failure,it proposes measures to prevent insulation breakdown,which improves the safe operation level of dry-type reactor.

关 键 词：干式电抗器 绝缘击穿 安全运行 

分 类 号：TM47[电气工程—电器]