基于信号包络谱的GIS局部放电超声诊断方法研究  

Study of Ultrasonic Diagnosis Method for Partial Discharge in GIS Based on Signal Envelope Spectrum

作　　者：戎琳[1] 郑文栋[1] 钱勇[1] 黄成军[1] 江秀臣[1] 

机构地区：[1]上海交通大学电气工程系电力传输与功率变换控制教育部重点实验室,上海200240

出　　处：《高压电器》2011年第12期39-43,48,共6页High Voltage Apparatus

摘　　要：笔者应用基于信号包络谱的分析方法对局部放电超声信号进行研究,并在实验室环境下建立悬浮电极、针尖电晕、自由金属微粒3种GIS内部典型绝缘缺陷的局放模型进行诊断识别,根据识别结果总结出了不同类型缺陷所表现出的不同测量特征。The diagnosis of partial discharges in GIS was studied based on ultrasonic detection method and the signal envelope spectrum analysis. Three types of typical GIS insulation defects including floating shield, electric corona and free moving particles were set and experienced in lab simulation condition. The characteristics of the partial discharge signals were analyzed and summarized,and based on which the insulation defects can be recognized.

关 键 词：GIS 局部放电 超声检测 包络谱 诊断 

分 类 号：TM595[电气工程—电器]