一起内部振动引起GIS超声波局放异常分析
Analysis of Abnormal GIS Ultrasonic Partial Discharge Caused by Internal Vibration
叶昱媛 1孙子昌 1杜敩 1史俊祎 1佘昌佳 1陈昊1
作者信息
- 1. 国网南京供电公司,江苏 南京 210024
- 折叠
摘要
针对一起500 kV GIS局部放电带电检测中超声信号异常引起的检修事件,通过对异常电压互感器展开外观检查、解体前局放试验、解体检查等,结合家族性缺陷数据以及装配工艺等因素,综合判断异常是设备内部装配工艺不良导致磁滞振动引起了超声局放信号,并针对后续设备运维工作提出了建议措施.
Abstract
In response to a maintenance incident caused by abnormal ultrasonic signals during live detection of partial discharge in a 500 kV GIS,through the abnormal voltage transformer appearance inspection,partial discharge test before disassembly and disassembly inspection,combined with factors such as family defects data and assembly technique,this paper makes a synthetic judgement that the abnormality is caused by poor internal assembly process of the equipment,which leads to hysteresis vibration to cause ultrasonic partial discharge signals.Suggestions and measures for the subsequent equipment operation and maintenance work are also put forward.
关键词
GIS/电压互感器/局部放电/超声信号/内部振动/磁滞振动Key words
GIS/voltage transformer/partial discharge/ultrasound signal/internal vibration/hysteresis vibration引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据