Residual charge distribution Measurement of surface leader on cylindrical insulator

カテゴリ: 全国大会

論文No: 1-050

グループ名: 【全国大会】平成21年電気学会全国大会論文集

発行日: 2009/03/15

タイトル(英語): Residual charge distribution Measurement of surface leader on cylindrical insulator

著者名: Junbo Deng(東京大学),Zi Li(東洋大学),松岡 成居(東京大学),熊田 亜紀子(東京大学),日高 邦彦(東京大学)

著者名(英語): Junbo Deng(The University of Tokyo),Zi Li(Toyo University),Shigeyasu Matsuoka(The University of Tokyo),Akiko Kumada(The University of Tokyo),Kunihiko Hidaka(The University of Tokyo)

キーワード: 沿面放電|リーダ

要約(日本語): For high voltage apparatus with a solid-gas insulation system, insulator surface is the weakest part. Because there is triple junction, where a gas, a solid dielectric, and a conductor coincide in one point; the surface discharge occurs from there, first as streamer, and then into leader, finally flashover occurs, companying with ionization of gas molecule and light emission. Information of charge, potential and field distribution of surface discharge is indispensable to clarify transformation process from streamer to leader. In this paper, the potential distribution caused by residual charge on the surface of the pipe is measured by the electrostatic probe. But the measured potential distribution shows that the potential on the surface is so high that discharge occurs between the probe and the pipe at the time of measuring. So, a two-layer structure pipe is designed to decrease the potential on the surface and the potential distribution is measured without discharge.

原稿種別: 日本語

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