接地インピーダンス低減手法の検討

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: 2012/03/01

タイトル(英語): A Study on a Method for Reducing a Grounding Impedance

著者名: 雨谷　昭弘（同志社大学），藤田　悠太（同志社大学），森井　浩（関西電力（株）），久保　隆（関西電力（株））

著者名(英語): Akihiro Ametani (Doshisha University), Yuta Fujita (Doshisha University), Hiroshi Morii (Kansai Electric Power Co., Inc.), Takashi Kubo (Kansai Electric Power Co., Inc.)

キーワード: 垂直電極，平板電極，接地インピーダンス，過渡応答，FDTDシミュレーション　　vertical electrode，plate electrode，grounding impedance，transient response，FDTD simulation

要約(英語): This paper investigates grounding impedance reduction with various shapes of grounding electrodes in comparison with a conventional vertical rod based on field measurements and FDTD simulations. It is found that a vertical rectangular conducting plate is effective to reduce the transient and steady-state impedance less than a half of that of the vertical rod. A circular conducting plate parallel to the earth surface is also effective to reduce the steady-state impedance, but the transient impedance is nearly the same as that of the vertical rod. The rate of the reduction is somehow proportional to the surface area of the electrode, but tends to saturate as the area increases. The transient impedance is rather independent of the earth resistivity and permittivity, but tends to inversely proportional to the wavefront duration of an applied current.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.132 No.3 （2012）

本誌掲載ページ: 284-291 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/132/3/132_3_284/_article/-char/ja/