抗铁磁谐振电压互感器烧毁事件分析  

Analyis on an Anti-ferroresonance Voltage Transformer Burnt-out Event

作　　者：王联合 廖洁娜 宋军 刘章 WANG Lianhe;LIAO Jiena;SONG Jun;LIU Zhang(Quanzhou Power Supply Company,Quanzhou 362000;Nyingchi Power Supply Company,Nyingchi 860000)

机构地区：[1]国网福建省电力有限公司泉州供电公司,福建泉州362000 [2]国网西藏电力有限公司林芝供电公司,西藏林芝860000

出　　处：《电力安全技术》2022年第1期23-25,共3页Electric Safety Technology

摘　　要：针对一起抗铁磁谐振电压互感器烧毁事件,通过解体互感器检查和分析其内部线圈故障特征,确认故障由10 kV线路误接地引起,并根据其特殊的4PT接线方式原理提出了应对措施,可避免同类设备故障再次发生,也为今后的设备验收和运维新增了又一检查点位。In allusion of an anti-ferroresonance voltage transformer burnt-out event,the damaged transformer is disassembled for checks and analysis,based on which the fault characteristics of its internal coils and the fault cause are confirmed that the burn-out is due to the wrong grounding of a 10 kV line.Countermeasures are put forward based on such a kind of special 4PT wiring mode,which is expected to avoid such a fault once again and add to the check list of equipment acceptance test and maintenance in future.

关 键 词：电压互感器 铁磁谐振 接地故障 

分 类 号：TM62[电气工程—电力系统及自动化]