OFケーブルの運転電界下での硫化銅など銅化合物による課電劣化メカニズムの存在

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: 2017/05/01

タイトル(英語): Existence of Electric Charging Degradation Mechanism by Copper Compounds such as Copper Sulfide under Operation Electric Field in Oil Filled Cables

著者名: 中出　雅彦（東京電力ホールディングス（株）経営技術戦略研究所），松井　健郎（東京電力ホールディングス（株）経営技術戦略研究所），杉本　修（東京電設サービス（株）），羽田　淳也（東京電設サービス（株）），永原　茂樹（東京電設サービス（株））

著者名(英語): Masahiko Nakade (R&D Department TEPCO Research Institute), Takeo Matsui (R&D Department TEPCO Research Institute), Shu Sugimoto (Tokyo Densetsu Service), Jyunya Haneda (Tokyo Densetsu Service), Shigeki Nagahara (Tokyo Densetsu Service)

キーワード: OFケーブル，課電劣化，銅化合物，部分放電，酸化スラッジ，銅溶解　　oil-filled cable，electric charging degradation，copper compounds，partial electric discharge，oxidation sludge，copper dissolution

要約(英語): In recent years, the breakdown accidents of Oil filled cables (OF cables) are occurring across the country. In TEPCO breakdown accidents occurred in a 275kV terminal joint and in a 154kV cable. OF cables have high reliability, so it has been thought that it is not deteriorated unless it is used in operation voltages and over atmospheric pressure. The cause of two breakdown accidents was estimated electric charging degradation with the copper compound by the findings of the breakdown removal product. We devised electric charging degradation mechanism under the operation electric field from these phenomena. By this mechanism, copper of the conductor is eluted into insulating oil as a compound and is deposited in the specific place. Then the copper compound occurs a partial electric discharge and wakes up destruction before long. Even if OF cables are used under the operation electric field, there is a possibility that degradation is progressed by this mechanism.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.137 No.5 （2017）

本誌掲載ページ: 405-414 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/137/5/137_405/_article/-char/ja/