Analysis of VHF-wideband electromagnetic noises from partial discharge using discrete wavelet transform

被引：0

作者：

Tungkanawanich, A ^{[1
]}

Hamid, EY ^{[1
]}

Kawasaki, ZI ^{[1
]}

Matsuura, K ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Elect Engn, Suita, Osaka 5650871, Japan

来源：

2001 IEEE POWER ENGINEERING SOCIETY WINTER MEETING, CONFERENCE PROCEEDINGS, VOLS 1-3 | 2001年

关键词：

partial discharge; electromagnetic waves; VHF-wideband detection; discrete wavelet transform; power distribution lines;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this paper, a new application of discrete wavelet transform to analyze the wide-band electromagnetic waves from partial discharge (PD) is introduced. The discrete wavelet transform has a special feature to perform the signal decomposition and reconstruction by multi-resolution analysis. Using this method, we can decompose the detected signal into various frequency sub-band signals, and then estimate the true shape of PD signal by mixing the appropriately-selected decomposed signals. The threshold processing of sub-hand signals is applied to reduce the interference of broadcasting signals. It is shown that the proposed method is advantageous to obtain almost the true shape of PD signal, whose characteristics can be used for the purpose of PD classification. Experimental results obtained by applying high voltage on faulty insulators are used to show the effectiveness of the proposed method.

引用

页码：263 / 268

页数：4

共 9 条

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