CVケーブルにおける人工水トリー劣化手法の検討

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: 2012/09/01

タイトル(英語): Study of Artificial Water Tree Degradation Method for XLPE Power Cables

著者名: 栗原　隆史（一般財団法人 電力中央研究所 電力技術研究所），倉石　隆志（一般財団法人 電力中央研究所 電力技術研究所），高橋　俊裕（一般財団法人 電力中央研究所 電力技術研究所），高橋　紹大（一般財団法人 電力中央研究所 電力技術研究所），鈴木　寛（一般財団法人 電力中央研究所 電力技術研究所），岡本　達希（一般財団法人 電力中央研究所 電力技術研究所）

著者名(英語): Takashi Kurihara (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Takashi Kuraishi (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Toshihiro Takahashi (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Tsuguhiro Takahashi (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Hiroshi Suzuki (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI)), Tatsuki Okamoto (Electric Power Engineering Research Lab., Central Research Institute of Electric Power Industry (CRIEPI))

キーワード: 電力用CVケーブル，水トリー，人工劣化，劣化診断　　XLPE power cables，water trees，artificial degradation，degradation diagnosis

要約(英語): In order to propose a method for producing water trees that measure a few millimeters in length in 20kV class to 60kV class XLPE cables, we discussed defect types and thermal conditions. First, surface roughness, needle protrusions, and line cracks were formed on the XLPE insulation surface of 6.6kV cables, and it was found that the water tree grew to a few millimeters in length from the needle protrusions and the line cracks. Second, water trees were generated in XLPE sheet and cable samples at room temperature and under a heat cycle and continuous elevated temperature conditions. Here, the longest water trees grew at room temperature. From these results, we selected needle protrusions and line cracks as defects and set room temperature as an artificial water tree degradation method. This method was applied with needle protrusions to a 22kV class XLPE cable, and we found that water tree length reached a few millimeters and AC breakdown voltage decreased to approximately 35% of the initial value.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.132 No.9 （2012） 特集：テラヘルツ波

本誌掲載ページ: 797-804 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/132/9/132_797/_article/-char/ja/