部分放電電流の減衰振動波形を用いたノイズ弁別手法

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2018/02/01

タイトル(英語): Noise Discrimination Method for Partial Discharge Current Focused on Damped Oscillation Waveform

著者名: 華表　宏隆（富士電機（株）），早瀬　悠二（富士電機（株）），山城　啓輔（富士電機（株）），松本　聡（芝浦工業大学）

著者名(英語): Hirotaka Torii (FUJI ELECTRIC CO., LTD.), Yuji Hayase (FUJI ELECTRIC CO., LTD.), Keisuke Yamashiro (FUJI ELECTRIC CO., LTD.), Satoshi Matsumoto (Shibaura Insutitute of Technology)

キーワード: 絶縁，部分放電，ノイズ，フーリエ変換，ウェーブレット，オンライン診断　　insulation，partial discharge，noise，Fourier transform，wavelet transform，online diagnosis

要約(英語): On-line Partial discharge (PD) measurement is very important for insulation monitoring of high-voltage equipment. One of the biggest challenges performing on-line monitoring is discrimination between PD detect signals and external noises. Experimental results using high frequency CT sensor show that the current waveforms associated with various PD signals are all damped cosine waveforms, and have unique frequency and decay times of damped oscillation. Therefore we focused attention on the damped oscillation waveform of the PD current, especially damped cosine waveform having a different number of oscillations. In addition to this, the noise discrimination method using wavelet transform or short-time Fourier transform is effective. Those noise discriminating process are applicable to on-line PD current measurement system.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.138 No.2 （2018） 特集：放電研究の最新動向

本誌掲載ページ: 64-70 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/138/2/138_64/_article/-char/ja/