FDTD法による誘導雷サージ解析

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): FDTD Simulation of Lightning-induced Surges

著者名: 馬場　吉弘（同志社大学大学院理工学研究科）

著者名(英語): Yoshihiro Baba (Graduate School of Science and Engineering, Doshisha University)

キーワード: FDTD，誘導雷サージ，電磁界-導体結合モデル，等価回路_x000D_　　FDTD，lightning-induced surge，electromagnetic-field-to-conductor coupling model，equivalent circuit

要約(英語): The finite-difference time-domain (FDTD) method has been frequently applied to simulations of lightning-induced surges in overhead power distribution and telecommunication conductors. The applications are classified into two types in terms of spatial dimension: 2D and 3D. About 30% of the simulations have employed the 2D FDTD method in the cylindrical coordinate system, which is computationally quite efficient compared to the 3D FDTD method. In the 2D simulations, the FDTD method is employed to express the distributed series voltage sources in terms of incident electric fields tangential to overhead conductors, to be incorporated in the equivalent distributed circuit of Agrawal et al. 's electromagnetic-field-to-conductor coupling model. There are two other representative coupling models that yield the same results as Agrawal et al. 's model does. One of the reasons for using the hybrid approach is that horizontal closely-spaced thin conductors can be represented easily by a distributed circuit. In many of the 3D FDTD simulations, the subgridding or nonuniform gridding technique has been used to represent horizontal closely-spaced thin conductors. About 70% of the FDTD simulations as of today have been concerned with induced surges associated with lightning strikes to flat ground, and about 30% with lightning strikes to the top of mountain, building, or tall object.

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: 217-228 p

原稿種別: 資料／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/141/2/141_217/_article/-char/ja/