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: 2021/07/01タイトル(英語): Negative Lightning Impulse Breakdown Characteristics of Mineral Oil with Different Nitrogen Addition Treatment Methods using Rogowski Electrodes著者名: 高村 紀充（福岡大学），荒岡 信隆（福岡大学），堤 友浩（福岡大学），藤村 仁大（福岡大学），花井 正広（福岡大学）著者名(英語): Norimitsu Takamura (Fukuoka University), Nobutaka Araoka (Fukuoka University), Tomohiro Tsutsumi (Fukuoka University), Masahiro Fujimura (Fukuoka University), Masahiro Hanai (Fukuoka University)キーワード: 鉱油，窒素付加処理，ファインバブル，雷インパルス絶縁破壊，Rogowski電極 mineral oil，nitrogen addition treatment，fine bubble，lightning impulse breakdown，Rogowski electrodes要約(英語): We compared the lightning impulse (LI) breakdown voltages (BDVs) and/or breakdown characteristics of mineral oils treated by three different methods using Rogowski electrodes. These mineral oils had been treated to nitrogen gas filling, nitrogen bubbling addition, and nitrogen fine bubbles (FBs) addition respectively after degassing. As a result, it was found that there was almost no effect on LI BDVs by the difference of the nitrogen addition treatment methods. Additionally, there was almost no difference in the Formative time lag, the Statistical time lag and the distribution of discharge marks for each sample oil. Therefore, nitrogen FBs used in this study were not considered to be a factor in reducing BDV of mineral oil, similar to our previous report using spherical electrodes.本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.141 No.7 （2021）本誌掲載ページ: 435-442 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/141/7/141_435/_article/-char/ja/
