Time-Frequency Analysis of Partial Discharge Acoustic Signals in a Model Transformer via Wavelet Transform

カテゴリ: 全国大会

論文No: 1-016

グループ名: 【全国大会】平成14年電気学会全国大会論文集

発行日: 2002/03/26

タイトル(英語): Time-Frequency Analysis of Partial Discharge Acoustic Signals in a Model Transformer via Wavelet Transform

著者名: Akumu Aloys O (愛媛大学),足立 太(愛媛大学),川口 昇(愛媛大学),尾崎 良太郎(愛媛大学),井堀 春生(愛媛大学),藤井 雅治(愛媛大学),有井 清益(愛媛大学)

著者名(英語): Akumu Aloys O (Ehime University),Futoshi Adachi(Ehime University),Noboru Kawaguchi(Ehime University),Ryotaro Ozaki(Ehime University),Haruo Ihori(Ehime University),Masaharu Fujii(Ehime University),Kiyomitsu Arii(Ehime University)

要約(日本語): In an oil filled power transformer acoustic (PD) partial discharge location is based on the delay time of arrival of the acoustic signal. Since the tank wall thickness is larger than the wavelength of the signal, the transformer tank posses a path for the signal thus complicating the triangulation procedure for the determination of the PD source. In this paper we show how to differentiate the various frequency components of the PD signal with an aim of removing those high frequency components that travel faster in the mixed path of oil and tank wall.

原稿種別: 日本語

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