文档介绍：基于局部放电统计特性分析的
GIS现场试验研究
王娜-许学勤2,谭向宇'
(，云南昆明，邮编650000； ，云南昆明，邮编650051 ； (集团)有限公司电力研究院，云南昆明，邮编650051；)
The research of GIS with live test based on the statistical property
of the partial discharge
WAN Na, XU Xueqin, TAN Xiangyu
(1 .Maintenance and Test Bureau, Kunming Power Supply Composition, Yunnan Power Grid,, Kunming 650200; 2.
Electric Power Design Institute in Yun Nan; Power Test Research Institute in Yun Nan)
摘要：基于局部放电超声信号统计特性，分析气体绝缘组合电器(Gas Insulated Switchgear, GIS)内部缺 陷，通过深入现场GIS变电站，普测全站GIS,获取了大量局部放电超声信号，为进一步分析局部放电超 声信号特性提供了基础，试验结果表明：进行数据统计分析例如信号幅值分布、飞行时间分布和相位分布， 结合传统相位谱图法可以判断GIS内部缺陷。
关键词：气体绝缘组合电器 局部放电超声
ABSTRACT: Based on the statistical property of the supersonic signal in partial discharge, the internal defect of GIS was analyzed. In order to analyze the property of the supersonic signal in partial discharge further, a lot of signal of supersonic signal in partial discharge were received through entering the station of GIS and measuring all GIS. The results show that the analyses like amplitude Characteristics, time Characteristics and phase Characteristics can judge the internal defect of GIS with phase spectral analysis.
KEY WORDS: GIS; partial discharge; supersonic
0引言
气体绝缘组合电器(GIS)首先由日本人发明，该装置利用了较强电介质强度的压缩SF6 气体，相较于空气绝缘，具有很大绝缘强度这一优势。更重要的是，SF6具有很强的灭弧能 力，而空气绝缘不具备这样的特性。由于其优异的绝缘性能以及压缩电气设备空间的优势， 广泛应用于电力系统。