CVケーブルの局所電界部における長期絶縁特性に関する検討

カテゴリ: 論文誌(論文単位)

グループ名: 【B】電力・エネルギー部門

発行日: 2014/08/01

タイトル(英語): A Study on Long-Term Characteristic of Local Electric Field in XLPE Cables

著者名: 阿部　和俊（（株）ジェイ・パワーシステムズ 研究開発センター），関口　洋逸（（株）ジェイ・パワーシステムズ 研究開発センター），中出　雅彦（東京電力（株）），永田　健一（東京電力（株））

著者名(英語): Kazutoshi Abe (R&D Center, J-Power Systems Corporation), Yoitsu Sekiguchi (R&D Center, J-Power Systems Corporation), Masahiko Nakade (R&D Center, Tokyo Electric Power Company), Ken-ichi Nagata (R&D Center, Tokyo Electric Power Company)

キーワード: 長期絶縁特性，架橋ポリエチレン，酸化劣化　　long-term insulation characteristics，XLPE，oxidative ageing

要約(英語): In this study, we evaluated deterioration characteristics of XLPE insulation under higher electric field than threshold level using block model samples with needle-plane electrode and also XLPE cable model samples with simulated defect. We conducted long-term aging test more than 50000 hours and life exponent “n=18” was obtained from the constant life exponent of V-t characteristics (inverse power's law (V-n=t)) of XLPE block samples, and “16.8” was obtained from the constant life exponent of V-t characteristics of XLPE cable samples. Even when the defects existed, it was confirmed that the deterioration characteristics showed the life exponent to be close to the conventional design value of “n”=15. We confirmed that with regard to the oxidative ageing behavior, the electric field dependency was observed in the defect by needle electrode, in which higher electric field shows higher ageing especially. It is suggested that the deterioration characteristics is gradually influenced by oxidative ageing with time and accelerated by related electric field.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.134 No.8 （2014） 特集：最近の電線・ケーブル技術

本誌掲載ページ: 659-664 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/ieejpes/134/8/134_659/_article/-char/ja/