基于小波分解的局部放电定位技术研究  

Study on Location Technology of Partial Discharge Based on Wavelet Decomposition

作　　者：孙曙光[1] 陆俭国[1] 王景芹[1] 金少华[1] 

机构地区：[1]河北工业大学控制科学与工程学院,天津300130

出　　处：《低压电器》2012年第16期5-7,25,共4页Low Voltage Apparatus

基　　金：河北省教育厅科学研究计划项目(Z2008308);河北省应用基础研究计划重点基础研究项目(10962126D)

摘　　要：为了利用超高频法进行局部放电点定位,设计了局部放电定位装置。阐述了定位系统的组成结构及定位软件的设计流程,并利用小波分解提取局部放电的主频特征信号作互相关运算。试验结果表明,定位效果要优于直接将放电信号进行互相关运算的定位效果,从而实现了局部放电点的有效定位。It is very important to locate the partial discharge source when partial discharge is detected for the gas insulated switchgear（GIS） equipment. In order to complete the location of partial discharge using UHF（ ultra high frequency ） method, the location equipment was designed. The construction and software process of the location system were also elaborated. The wavelet decomposition was used to extract the main frequency characteristic of partial discharge signal. After cross-correlation operation it is shown that the location effect is better than that of the original signal so the effective location of partial discharge source is achieved.

关 键 词：局部放电 超高频 小波分解 定位 

分 类 号：TM855.1[电气工程—高电压与绝缘技术]