電気学会論文誌B(電力・エネルギー部門誌)
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
論文
A Grounding System for Reducing a Surge Current between Two Grounding Electrodes on FRP Boat
Yoki Ikeda
著者情報
ジャーナル フリー

2018 年 138 巻 3 号 p. 223-228

詳細
抄録

When a small boat, which made of insulation material such as Fiber Reinforced Plastic (FRP) or wood, is struck by either direct or nearby lightning, a surge current flows in a power cable or a grounding wire on the boat. The current due to a direct lightning strike flows out from grounding electrodes for a radio or the other electrical equipment. On the other hand, if the boat is struck by nearby lightning, the current flowing in seawater invades into the equipment on the boat via the grounding electrodes. To reduce the current flowing in the circuit on the small boat, an installation of a ring electrode around the hull of the boat is proposed in this paper. For the direct lightning, the countermeasure can reduce the current flowing out from the grounding electrode for the radio and the other equipment by a connection of the electrodes with the appended ring electrode. The ring electrode bypassing the lightning current. Even if the lightning strikes a surface of seawater nearby the boat, a few percent of the lightning current invades into the boat. The proposed countermeasure also reduces the invading current by about 60%.

著者関連情報
© 2018 by the Institute of Electrical Engineers of Japan
前の記事 次の記事
feedback
Top