雷インパルス電圧による絶縁被覆電極表面の帯電が絶縁破壊特性に及ぼす影響

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: 2017/05/01

タイトル(英語): Influence of Charge Accumulation on Dielectric Coated Electrode Surface on Breakdown Characteristics by Lightning Impulse Voltage Application

著者名: 海永　壮一朗（三菱電機（株）先端技術総合研究所），吉村　学（三菱電機（株）先端技術総合研究所），武藤　浩隆（三菱電機（株）先端技術総合研究所），釣本　崇夫（三菱電機（株）先端技術総合研究所）

著者名(英語): Soichiro Kainaga (Advanced Technology R&D Center, Mitsubishi Electric Corp.), Manabu Yoshimura (Advanced Technology R&D Center, Mitsubishi Electric Corp.), Hirotaka Muto (Advanced Technology R&D Center, Mitsubishi Electric Corp.), Takao Tsurimoto (Advanced Technology R&D Center, Mitsubishi Electric Corp.)

キーワード: GIS，SF6ガス，絶縁破壊，絶縁被覆，帯電　　GIS，SF6 gas，breakdown，dielectric coating，charge accumulation

要約(英語): Covering an electrode with a dielectric layer improves the performance of SF6 gas-insulated systems. This time, the authors evaluated the influence of charge accumulation of the coated electrode surface on the breakdown characteristics and measured the charge amount on the coated electrode surface. Results of the breakdown voltage measurements showed that, without the charge elimination, both the absolute value and the dispersion of the breakdown voltages enlarged. On the other hand, the influence of the charge accumulation was not observed for the minimum breakdown voltages. By measuring the surface potential of the coated electrode, two results were obtained. First, as for negative voltage application, if the electric field of the coated electrode tip exceeded the critical ionization electric field of SF6 gas, but breakdown did not occur, a positive surface potential was observed. On the other hand, if breakdown occurred, the surface potential hardly changed. Second, as for positive voltage application, if breakdown occurred, a negative surface potential was observed. On the other hand, if breakdown did not occur, the amount of the surface potential varied depending on the electrode system and the SF6 gas pressure.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.137 No.5 （2017） 特集：革新的な光応用技術

本誌掲載ページ: 284-290 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/137/5/137_284/_article/-char/ja/