GIS中局部放电特高频信号与放电严重程度的关联分析  

Investigation of Correlation Between UHF Signal and PD Severity in GIS

作　　者：丁登伟[1] 高文胜[2] 刘卫东[2] 

机构地区：[1]国网四川省电力公司电力科学研究院,成都610072 [2]清华大学电机系电力系统及发电设备控制和仿真国家重点实验室,北京100084

出　　处：《高压电器》2014年第9期6-11,共6页High Voltage Apparatus

基　　金：国家863高技术项目(2011AA05A121)~~

摘　　要：局部放电激发的特高频信号大小与放电严重程度紧密相关,笔者利用220 kV GIS设备,采用特高频检测法和IEC 60270—2000检测法同时对多种典型局部放电源进行试验。通过分析特高频信号的时域峰峰幅值与局部放电量之间的关联,发现不同类型局部放电源所激发的特高频信号峰峰值与视在放电量的对应关系存在显著差异。针对不同局部放电源特有的物理结构,通过对放电机理的对比分析,给出了不同缺陷激发的特高频信号峰峰值与视在放电量关系不一致原因的定性解释。The magnitude of ultra-high frequency（UHF）signal caused by partial discharge（PD）closely relates to the severity of PD. In this study, in order to understand the intrinsic correlation between the UHF signal and the severity of PD, different typical PD sources were tested on a 220 kV GIS with the UHF measurement method and the measurement technique in the standard IEC 60270—2000. The correlation between the apparent discharge and the peak-to-peak amplitude of the UHF signal in time domain was analyzed. The results indicate that different PD source shows diverse correlation between the apparent discharge and the peak-to-peak amplitude of UHF signal.Considering the particular structure of each PD source, the discharge mechanisms of the PD sources were analyzed comparatively to explain the difference in the correlations.

关 键 词：局部放电 特高频信号 气体绝缘组合电器(GIS) IEC 60270—2000 放电严重程度评估 

分 类 号：TM595[电气工程—电器]