基于操作过电压作用35kV干式空心电抗器故障原因分析  

Fault Analysis of 35 kV Dry Air Reactor Based on Switching Overvoltage Impact

作　　者：张小平[1] 刘小波[1] 吴冬文[1] 黄斌[1] 吴花[1] 

机构地区：[1]国网江西省电力公司检修分公司,江西南昌330029

出　　处：《电工电气》2016年第11期31-34,共4页Electrotechnics Electric

摘　　要：结合电抗器的运行环境、投切过程及本身材质结构,介绍了一起35 k V电抗器闪络故障。通过对电抗器运行状态调查、故障设备检查、试验以及理论仿真分析,发现电抗器主要故障原因是断路器频繁投切过电压,在封包玻璃纤维结构不合理的电抗器首端线圈匝间绝缘层产生破坏。针对本次故障问题,提出相应防范措施,为今后电抗器绝缘选型、运行维护提供参考。Combining with the operating environment of reactors, switching process and itself material structure, this paper introduced a case of 35kV reactors lightning fault. Analysis was made to reactors running status investigation, fault equipment inspection, testing and theoretical simulation. The main fault reason of reactors was the over-voltage during frequent switching between the reactor coils, which led to the turn-to-turn insulating layer damage of reactors head end coils with unreasonable package fberglass structure. For this fault problem, this paper pro-posed the preventive measures, which provides references for the future reactors insulating model selection and operating maintenance.

关 键 词：干式空心电抗器 故障分析 防范措施 

分 类 号：TM47[电气工程—电器]