200kV高圧直流架空送電線の帰線への雷撃による素線溶断特性の解析的評価

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: 2023/01/01

タイトル(英語): Numerical Evaluation of Melting and Breaking Characteristics of Return Conductor Strands of 200kV HVDC Overhead Transmission Line Struck by Lightning

著者名: 岩田　幹正（（一財）電力中央研究所），大高　聡也（（一財）電力中央研究所），合田　豊（（一財）電力中央研究所），白石　智規（東京電力パワーグリッド（株）），坪井　敏宏（東京電力ホールディングス（株））

著者名(英語): Mikimasa Iwata (Central Research Institute of Electric Power Industry (CRIEPI)), Toshiya Ohtaka (Central Research Institute of Electric Power Industry (CRIEPI)), Yutaka Goda (Central Research Institute of Electric Power Industry (CRIEPI)), Tomonori Shiraishi (Tokyo Electric Power Company Power Grid, Inc.), Toshihiro Tsuboi (Tokyo Electric Power Company Holdings, Inc.)

キーワード: 高圧直流，架空送電線，帰線，雷撃，素線溶断_x000D_　　HVDC，overhead transmission line，return conductor，lightning strike，melting and breaking of strand

要約(英語): In March 2021, the Shin-Shinano Substation of TEPCO Power Grid, Inc. was connected to the Hida Convertor Station of Chubu Electric Power Grid Co., Inc. by HVDC transmission system with an interconnection capacity of 900MW in order to increase the interconnection capacity between the eastern and the western areas in Japan. The 200kV HVDC overhead transmission lines have a pair of energized conductors and a return conductor. It has been investigated that TACSR (410mm2 [AC410], 610mm2 [AC610], 810mm2 [AC810]) would be used as the return conductor. However, as the return conductor plays the role of a ground wire, the melting and breaking of TACSR strands due to lightning strike was concerned. Therefore, in this paper, numerical evaluations of melting and breaking characteristics of the return conductor strands were carried out supposing the return conductor was struck by DC arc discharge simulating lightning whose maximum current was 400kA. As a result, the number of breaking strands of AC610 was more than that of AC410 and AC810 because the diameter of strands of AC610 was smaller than that of AC410 and AC810. The remaining rate of cross-section area of strands of AC410 decreased more than AC610 and AC810 as DC arc current increased.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.143 No.1 （2023）

本誌掲載ページ: 42-49 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/143/1/143_42/_article/-char/ja/