電気トリー進展に伴う部分放電の極性効果と放射電磁波

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: 2014/04/01

タイトル(英語): Polarity Effect and Electromagnetic Radiation of Partial Discharge Accompanying Growth of an Electrical Tree

著者名: 牟田神東　達也（（株）かんでんエンジニアリング変電工事部／兵庫県立大学大学院工学研究科），黒石　祥斗（兵庫県立大学大学院工学研究科），上野　秀樹（兵庫県立大学大学院工学研究科）

著者名(英語): Tatsuya Mutakamihigashi (Power Transformation Construction work Department, Kanden Engineering Co., Inc./University of Hyogo), Yoshito Kuroishi (University of Hyogo), Hideki Ueno (University of Hyogo)

キーワード: 部分放電，電磁波，電気トリー，エポキシ樹脂，架橋ポリエチレン　　partial discharge，electro-magnetic waves，electrical tree，epoxy resin，cross-linked polyethylene

要約(英語): We have investigated characteristics of radiated electromagnetic (EM) waves from positive and negative partial discharge (PD) in epoxy resin and cross-linked polyethylene. As a result, we found that there is correlation among EM level from PD, positive PD current and electrical tree. Therefore, growth of an electrical tree makes up a lot of positive PD.Also, we have investigated characteristics of frequency region of radiated EM waves from PD in air, insulating oil and liquid epoxy in addition to above insulators. EM waves were detected in the frequency region of 40-300 MHz from positive and negative PD in epoxy resin and cross-linked polyethylene. Also, EM waves were detected in the frequency region of 40-150 MHz from positive and negative PD in air. And in the case of insulating oil and liquid epoxy, EM waves were detected in the frequency region of 40-150 MHz from positive PD, and 40-250 MHz from negative PD. Frequency region was different depending on materials or polarity of discharge. Results of the study, we considered that the cause is difference of the electric field strength at partial discharge occurring.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.4 （2014） 特集：平成25年基礎・材料・共通部門大会

本誌掲載ページ: 273-278 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/134/4/134_273/_article/-char/ja/