放電電流波形による配電用避雷器の雷故障判定方法

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: 2023/12/01

タイトル(英語): A Detection Method of Lightning Damaged Distribution Surge Arresters Using Discharge Current Waveforms

著者名: 松浦　進（北陸電力送配電（株）配電部），金谷　賢一（北陸電力送配電（株）配電部），杉本　仁志（北陸電力（株）新価値創造研究所）

著者名(英語): Susumu Matsuura (Distribution Dept. Hokuriku Electric Power Transmisson & Distribution Company), Kenichi Kanatani (Distribution Dept. Hokuriku Electric Power Transmisson & Distribution Company), Hitoshi Sugimoto (Innovation Laboratory, Hokuriku Electric Power Company)

キーワード: 配電線，雷，避雷器，故障，判定方法，放電電流波形　　distribution line，lightning，surge arrester，damage，detection method，discharge current waveform

要約(英語): In Japan, many distribution surge arresters with an internal series gap have been installed on 6.6-kV overhead distribution lines for reducing lightning overvoltages. In contrast, surge arresters are sometimes damaged by direct lightning strikes to distribution lines, particularly in winter. Measurement of insulation resistance between terminals of the surge arrester and measurement of DC discharge voltage of the surge arrester are generally adopted to detect damaged arresters. However, if metal-oxide (MO) varistors are damaged and the internal series gap is not damaged, it is difficult to detect damaged arresters by the conventional methods.Therefore, this paper proposes a new detection method of damaged arresters using discharge current waveforms. In the new method, first, the discharge current of the surge arrester is measured when a high DC voltage is applied to the surge arrester through an inductor. Then, the damaged arrester is detected by comparing the current waveform with that of a non-damaged arrester. The detection rate of damaged arresters by the new method is remarkably higher than those by the conventional methods.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.143 No.12 （2023）

本誌掲載ページ: 659-666 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/143/12/143_659/_article/-char/ja/