GIS内の部分放電およびフリー異物により発生するラム波の時間周波数解析 Time-Frequency Analysis of Lamb Waves Caused by Partial Discharges and Free Particles in GIS

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We investigated propagation properties of Lamb waves in GIS tank using time-frequency analysis to diagnose insulation performance of GIS. We measured the acoustic signals excited by a metallic particle colliding with the tank sheath, and those emitted by partial discharge in GIS as well. The Wavelet Transform was applied to decompose the wave data into its timefrequency components. As the result, it was confirmed that Lamb waves with the dispersive property of the velocity are excited and the waves propagate spirally along the tank wall due to the cylindrical structure of the tank. Taking these results into consideration, we proposed a new technique for identification of the defect location in GIS based on the time-frequency analysis of the acoustic waves using the Wavelet Transform.

収録刊行物

  • 電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society

    電気学会論文誌. B, 電力・エネルギー部門誌 = The transactions of the Institute of Electrical Engineers of Japan. B, A publication of Power and Energy Society 122(6), 719-724, 2002-06-01

    社団法人電気学会

参考文献:  10件中 1-10件 を表示

被引用文献:  13件中 1-13件 を表示

各種コード

  • NII論文ID(NAID)
    10008508667
  • NII書誌ID(NCID)
    AN10136334
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03854213
  • NDL 記事登録ID
    6175514
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-794
  • データ提供元
    CJP書誌  CJP引用  NDL  IR 
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