加速寿命試験によるZnO素子の劣化検証 Degradation of ZnO Varistors Estimated by Ageing Tests

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We have been operated ZnO surge arresters on our power systems since 1970's. But we have been anxious for 1<sup>st</sup> stage ZnO surge arresters, because these surge arresters have the thermal runaway behavior with the applied continuous operating voltage. I have been examined the resistive leakage currents of ZnO varistors which were enclosed in ZnO surge arresters installed in our substations 20 years ago. I estimated the resistive leakage currents with the long term ageing tests which were repeatedly consisted of supplied AC voltage periods and no voltage periods. As a result, changes of these leakage currents are caused by the migrations of interstitial zinc ions and oxygen ions. On this paper, I describe these ion migrations which are caused by supplied voltages or no supplied voltage and the cracks of depletion layers which could be caused by the migration of oxygen ions.

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 128(4), 661-674, 2008-04-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10021130636
  • NII書誌ID(NCID)
    AN10136334
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854213
  • NDL 記事登録ID
    9451100
  • 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  J-STAGE 
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