TEM-delayモデルによる鉄塔-送電線系雷サージ応答の検証

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: 2021/02/01

タイトル(英語): Lightning Surge Response of a Transmission Tower with Overhead Lines Analyzed by TEM-delay Model

著者名: 山中　章文（同志社大学理工学部），長岡　直人（同志社大学理工学部），馬場　吉弘（同志社大学理工学部），本山　英器（（一財）電力中央研究所 電力技術研究所），植田　俊明（大同大学工学部）

著者名(英語): Akifumi Yamanaka (Faculty of Science and Engineering, Doshisha University), Naoto Nagaoka (Faculty of Science and Engineering, Doshisha University), Yoshihiro Baba (Faculty of Science and Engineering, Doshisha University), Hideki Motoyama (Electric Power

キーワード: 雷，送電鉄塔，送電線，逆フラッシオーバ，EMTP，FDTD法_x000D_　　lightning，transmission tower，transmission line，back-flashover，EMTP，FDTD method

要約(英語): A back-flashover due to a lightning strike to the top of a transmission tower or its ground wires can result in the power outage. The occurrence rate and seriousness of the back-flashover should be estimated for existing or planned transmission lines for lightning risk management of power systems. This paper presents a modeling method of crossarms in a Transverse Electro-Magnetic (TEM) delay tower model, which considers a non-TEM characteristic of the tower. The voltages generated across the insulator strings due to a lightning strike to the tower top are discussed based on the analysis results by the finite-difference time-domain method, the TEM-delay model, and the multistory tower model, which has been widely used, with referencing surge experimental results reported in the past. Then back-flashovers of a 77-kV transmission system are analyzed using the proposed and conventional circuit models, and these results are discussed with referencing a measured back-flashover reported in the past. Based on the above analyses and discussions, this paper shows that the voltages across the insulator strings have been underestimated by the conventional model, and shows the applicability of the TEM-delay model to lightning surge analysis in high-voltage transmission systems.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.141 No.2 （2021） 特集：令和2年電力・エネルギー部門大会

本誌掲載ページ: 145-153 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/141/2/141_145/_article/-char/ja/