高压电器2024，Vol.60Issue(4)：214-220,7.DOI:10.13296/j.1001-1609.hva.2024.04.026
一起110kV GIS设备自由金属颗粒放电缺陷及解体分析案例
Discharge Defect of Free Metal Particle of 110 kV GIS Equipment and Its Disassembly Analysis
林岑 1邱炜 1周波 1杨红权 1刘彦琴 1刘鑫 1高竣 1曾晓维1
作者信息
- 1. 国网四川省电力公司成都供电公司,成都 610000
- 折叠
摘要
Abstract
The analysis and treatment of abnormal ultrasonic wave in the disconnecting switch(DS)compartment of PT of 110 kV GIS is introduced.It is judged through amplitude location,time delay location and the change of equip-ment operation state that the defect is from the inside of the DS compartment.Multiple kinds of spectrum analysis on the partial discharge ultrasonic signal are performed,thinking that the free metal particle at the bottom the compart-ment is the main reason which causes abnormal ultra sonic wave signal.It is found by opening the enclosure that the grading cover of the stationary contact of the blade has obvious scratches and many black solid debris are at the bot-tom of the gas compartment.The weak installation process of the blade causes the metal debris to drop at the bottom of the gas compartment,generating partial discharge and causing the ultrasonic wave signal abnormal.The discharge of disconnecting switch of PT is a typical metal particle discharge case,which has provided experience and reference for the analysis of the similar abnormal situation in the future.关键词
GIS设备/自由金属颗粒放电/异常超声波/开关Key words
GIS equipment/free metal particle discharge/abnormal ultrasonic wave/DS引用本文复制引用
林岑,邱炜,周波,杨红权,刘彦琴,刘鑫,高竣,曾晓维..一起110kV GIS设备自由金属颗粒放电缺陷及解体分析案例[J].高压电器,2024,60(4):214-220,7.
