电气技术2025，Vol.26Issue(6)：80-84,5.
一起35kV电容式电压互感器二次电压异常下降故障分析
Analysis of an abnormal secondary voltage drop fault in a 35kV capacitive voltage transformer
李冬雪1
作者信息
- 1. 国网冀北电力有限公司张家口供电公司,河北 张家口 075000
- 折叠
摘要
Abstract
For a 220kV substation with 35kV capacitive voltage transformer secondary voltage abnormal drop fault,this paper introduces the structure of capacitive voltage transformer and its working principle.Then,combined with fault phenomenon,diagnostic test data,equipment disintegration inspection,the cause of the fault as ferromagnetic resonance overvoltage causing insulation breakdown of the differential and angular coils is analyzed and determined.Finally,some suggestions are put forward for the infrared temperature measurement and secondary voltage monitoring in the daily operation and maintenance inspection to improve the reliability of capacitive voltage transformer operation.关键词
电容式电压互感器/电压异常/铁磁谐振/绝缘击穿Key words
capacitive voltage transformer/voltage anomaly/ferromagnetic resonance/insulation breakdown引用本文复制引用
李冬雪..一起35kV电容式电压互感器二次电压异常下降故障分析[J].电气技术,2025,26(6):80-84,5.
