Effect of Core Diameter of Cylindrical Polymer Insulators on Contamination Flashover Voltage(Part 2) (特集:平成18年〔電気学会〕電力・エネルギー部門大会) Effect of Core Diameter of Cylindrical Polymer Insulators on Contamination Flashover Voltage-Part II

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This paper presents the results of an investigation of the contamination flashover voltage characteristics of cylindrical polymer insulators with different core diameters under simulated rain. The specimens had the same or very similar shed profiles but different core diameters. On the contrary to the results obtained under heavy fog conditions, flashover voltages of transmission line insulator with the smallest core diameter were not significantly higher compared with those of station insulators having larger core diameters, such as station post insulators and bushing shells. The dominant flashover mechanism of hydrophobic polymer insulators under contaminated and rain conditions is water streaming along the insulator surface and the bridging between the adjacent shed tips by dripping water irrespective of core diameter. So, the flashover voltage of a contaminated cylindrical polymer insulator is not significantly influenced by its core diameter under rain conditions. Based on our investigation results, combined with the results obtained under heavy fog conditions reported in our companion paper (part I), it can be said that contamination flashover/withstand voltage tests may be conducted only under heavy fog conditions for evaluating polymer insulators having larger core diameters, while tests under simulated rain conditions as well as under heavy fog conditions may be necessary for evaluating transmission line polymer insulators having the smallest core diameter. The investigation results of flashover voltage characteristics of hydrophobic polymer insulators presented in this paper will be helpful in the selection, design and maintenance of polymer insulators for contamination areas.

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  • 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 127(1), 307-313, 2007-01-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10018456764
  • NII書誌ID(NCID)
    AN10136334
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    03854213
  • NDL 記事登録ID
    8626269
  • 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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