水平接地電極における過渡応答特性の一検討

カテゴリ: 部門大会

論文No: 25

グループ名: 【B】平成25年電気学会電力・エネルギー部門大会

発行日: 2013/08/27

タイトル(英語): An Investigation on Transient Characteristics in a Horizontal Grounding Electrode

著者名: 中村 圭佑(同志社大学),吉田 啓昭(同志社大学),馬場 吉弘(同志社大学),長岡 直人(同志社大学),雨谷 昭弘(同志社大学)

著者名(英語): Keisuke Nakamura(Doshisha University),Hiroaki Yoshida(Doshisha University),Yoshihiro Baba(Doshisha University),Naoto Nagaoka(Doshisha University),Akihiro Amatani(Doshisha University)

キーワード: 過渡応答|水平接地電極|伝搬速度|接地インピーダンス|FDTD法|Transient response|Horizontal grounding electrode|Propagation velocity|Grounding impedance|FDTD method

要約(日本語): This paper investigates transient characteristics of a horizontal grounding electrode based on experiments and simulation results by a FDTD method. The simulation results agree with the measured results satisfactorily. As the earth resistivity becomes higher, the grounding electrode looks an isolated conductor. Therefore traveling waves inside the grounding electrode reach the other end and the skin effect becomes apparent. The traveling wave velocity from the sending end to the bottom of the horizontal electrode is dependent not only on the earth permittivity but also on the resistivity. In high resistivity earth, the velocity is given by c0/√(εe) as is well-known.

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