冬の自然雷による配電用避雷器のエネルギー耐量の測定

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: 2014/02/01

タイトル(英語): Measurement of Energy Absorption Capability of Distribution Surge Arresters by Natural Winter Lightning Current

著者名: 杉本　仁志（北陸電力（株）技術開発研究所），松浦　進（北陸電力（株）技術開発研究所）

著者名(英語): Hitoshi Sugimoto (Engineering Research & Development Center, Hokiriku Electric Power Company), Susumu Matsuura (Engineering Research & Development Center, Hokiriku Electric Power Company)

キーワード: 雷，配電線，避雷器，エネルギー耐量，冬季雷　　lightning，power distribution line，surge arrester，energy absorption capability，winter lightning

要約(英語): Surge arresters and distribution equipments with zinc-oxide (ZnO) elements are used for lightning protection of overhead power distribution lines in Japan. The increase of surge arresters including distribution equipments with ZnO elements has resulted in a remarkable decrease of lightning outages of distribution lines due to sparkover. On the other hand, these surge arresters are sometimes damaged by direct lightning strokes, especially in winter. Winter lightning strokes have very large electric charge as compared with summer lightning strokes. For improvement of surge arresters, we have measured the energy absorption capability of surge arresters using natural winter lighting strokes to a test tower. The energy absorption capability of an insulator with built-in ZnO elements is about 1.4 times larger than that of a surge arrester with the same ZnO elements. The ZnO elements of the insulator are wrapped in an insulation sheet in order to fix ZnO elements in the center of the porcelain housing because the insulators are installed horizontally. The insulation sheet strengthens insulation of the side of ZnO elements, and the energy absorption capability of the insulator improves. The result indicates that wrapping ZnO elements in the insulation sheet is one of effective countermeasures against surge arrester failures.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.134 No.2 （2014） 特集：接地と雷害・EMC対策

本誌掲載ページ: 191-197 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/134/2/134_191/_article/-char/ja/