Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于超声波飞行图的GIS自由金属微粒缺陷诊断研究

来源:电工电气发布时间:2016-04-06 14:06 浏览次数:28

基于超声波飞行图的GIS自由金属微粒缺陷诊断研究 

戎琳1,贾勇勇2,杨景刚2 
1 国电南瑞科技股份有限公司,江苏 南京 210061;2 江苏省电力公司电力科学研究院,江苏 南京 211103 
 

摘 要:自由金属微粒是气体绝缘开关设备(GIS)中最常见的缺陷之一,极易引起绝缘子闪络等绝缘故障。建立了自由金属微粒的典型缺陷模型并进行大量局部放电试验,对信号的工频相位相关性进行判断,确定了不同缺陷类型、不同试验电压下放电超声波飞行图的特征差异,为GIS中自由金属微粒缺陷的识别和诊断提供了一种有效的方法。
关键词:气体绝缘开关设备;局部放电;自由金属微粒;超声波飞行图;缺陷诊断
中图分类号:TM591;TM855 文献标识码:A 文章编号:1007-3175(2014)10-0019-05


Study on Defect Diagnosis of Free Metal Particle in Gas Insulated Switchgear Based on Ultrasonic Flighting Plot 

RONG Lin1, JIA Yong-yong2, YANG Jing-gang2 
1 NARI Technology Co., Ltd, Nanjing 210061, China;
2 Jiangsu Electric Power Company Research Institute, Nanjing 211103, China
 
 

Abstract: Free metal particle is one of the most common defects of gas insulated switchgear (GIS), which causes insulation faults such as insulator flashover etc. easily. The typical defect model of free metal particle was set up and a great lot of partial discharge experiments were taken in lab. Power frequency phase correlation of signals was judged to detect different characteristics of ultrasonic flighting plot of different defects under different level of testing voltage, which provides a kind of effective recognition and diagnosis method for free metal particle defect in GIS.
             Key words: gas insulated switchgear; partial discharge; free metal particle; ultrasonic flighting plot; defect diagnosis


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