Wavelet Analysis of Partial Discharge Acoustic Signals in a Model Transformer
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概要
- 論文の詳細を見る
The focus of acoustic partial discharge measurements is based on the discharge location. The tank wall thickness of a power transformer is usually larger than the wavelength of the signal, and therefore possesses a path for the signal, thereby complicating the triangulation procedure for the determination of the discharge location. Owing to their difference in frequency, the signals that travel faster through the mixed path of oil and tank and the slower ones that follow a direct path through oil can be differentiated. By using wavelet transform, we are able to not only discriminate between these two signals, but also to determine the exact instant at which a change in the detected signal occurs due to their interference. This is a new method of analyzing the partial discharge acoustic signal to extract the signal that travels through the direct path in oil and can lead to a more accurate discharge location.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-08-15
著者
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Ozaki Ryotaro
Faculty Of Engineering Ehime University
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Akumu Aloys
Faculty Of Engineering Ehime University
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Ihori Haruo
Faculty Of Engineering Ehime University
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Masai Hajime
Faculty Of Engineering Ehime University
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Arii Kiyomitsu
Faculty Of Engineering Ehime University
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Adachi Futoshi
Faculty Of Engineering Ehime University
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Fujii Masaharu
Faculty Of Engineering Ehime University
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Masai Hajime
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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Arii Kiyomitsu
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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Ozaki Ryotaro
Faculty of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Adachi Futoshi
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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Ihori Haruo
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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Akumu Aloys
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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Fujii Masaharu
Faculty of Engineering, Ehime University, 3 Bunkyo, Matsuyama, Ehime 790-8577, Japan
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