共同接地線に流れる地絡電流を用いた地絡点に至る分岐点推定

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: 2018/09/01

タイトル(英語): Branch Point Estimation leading to Ground Fault Location using Ground Fault Current Flowing to Common Earthing Conductor

著者名: 児玉　安広（東京電力パワーグリッド（株）パワーグリッドサービス部 ネットワークサービスセンター 配電系統連系グループ），山本　良太（東京電力パワーグリッド（株）配電部 配電系統技術グループ），西田　悠介（東京電力ホールディング（株）経営戦略技術研究所 技術開発部 需要家エリア），佐野　常世（東京電力ホールディング（株）経営戦略技術研究所 技術開発部 需要家エリア）

著者名(英語): Yasuhiro Kodama (Distribution Interconnection Group, Network Service Center, TEPCO Power Grid Company), Ryota Yamamoto (Distribution Grid Engineering Group, Distribution Department, TEPCO Power Grid Company), Yusuke Nishida (Distribution & Customer Servic

キーワード: 配電線，地絡点に至る分岐点推定，高抵抗地絡，共同接地線　　distribution line，estimating the branch point to ground fault location，ground fault in high resistivity，common earthing conductor

要約(英語): Authors have investigated a method to estimate the branch point leading to ground fault location as trunk line between two adjacent distribution lines in case of high resistivity ground fault with voltage gap in distribution line. Ground fault wave form in high resistivity with voltage gap shows often the triangular wave. The terminal points of two adjacent distribution lines need to be connected by common earthing conductor to apply ground fault locating method using common earthing conductor. The branch point up to ground fault location in trunk line between two adjacent distribution lines can be estimated from the time difference of the zero crossover point, where ground fault current flows to grounding electrode of distribution lines via common earthing conductor. This paper clarifies that the origin of the time difference of zero crossover point is related to phase difference of ground fault currents measured at electrodes of two adjacent distribution lines, using by ATP simulation. And this paper mentions field application of distribution line and measurement system of ground fault current flowing to common earthing conductor.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.138 No.9 （2018）

本誌掲載ページ: 772-780 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/138/9/138_772/_article/-char/ja/