近傍雷を受けた小型船舶に流れる船内サージ電流

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: 2022/08/01

タイトル(英語): Surge Current Flowing in the Small Boat due to the Nearby Lightning

著者名: 明橋　健（奈良工業高等専門学校），池田　陽紀（奈良工業高等専門学校）

著者名(英語): Ken Akehashi (National Institute of Technology, Nara College), Yoki Ikeda (National Institute of Technology, Nara College)

キーワード: 小型船舶，サージ電流，近傍雷，洋上雷_x000D_　　small boat，surge current，nearby lightning，offshore lightning

要約(英語): Lightning protection for a boat is important since damage to the boat by lightning may directly lead to the risk of crew's life. The surge current when the boat is struck by lightning and the countermeasure was considered based on the results of numerical analysis in this paper. There is a risk that onboard equipment on the boat is damaged by surge current, even if the boat is 1km away from the lightning strike point. The amplitude of the surge current on the boat depends on the direction and the distance of the lightning strike point from the boat. When some grounding electrodes or metal parts are lined up in the same direction as the surge current direction in the seawater, the surge current which invades to the boat is large. The electrode that is installed in parallel with the direction of the grounding electrodes as a countermeasure can reduce the surge current on the boat. However, if the electrodes as a countermeasure cannot be placed into the point close enough to grounding electrodes of the onboard equipment, it is safer to install the countermeasure on annular shape.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.142 No.8 （2022）

本誌掲載ページ: 386-391 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/142/8/142_386/_article/-char/ja/