風力発電設備における冬季の雷撃様相

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: 2011/07/01

タイトル(英語): Characteristics of Winter Lightning that Occurred on a Windmill and its Lightning Protection Tower

著者名: 高木　伸之（岐阜大学工学部電気電子工学科），王　道洪（岐阜大学工学部電気電子工学科）

著者名(英語): Nobuyuki Takagi (Department of Electrical and Electronic Engineering, Gifu University), Daohong Wang (Department of Electrical and Electronic Engineering, Gifu University)

キーワード: 雷，上向き雷，リーダー開始機構　　lightning，upward lightning，leader initiation

要約(英語): We have obtained the electric current, electric field change, and optical image data or several tens of lightning that hit on a wind turbine and its lightning-protection tower during the past6 non-stop winter seasons from 2005 to 2010. By analyzing the data, we found that the upward lightning hitting on the high structures can be classified into self-initiated and other-triggered types according to whether there is a discharge activity prior to the upward lightning. We also found that although other-triggered upward lightning can start at a relatively lower wind speed, self-initiated upward lightning always started either from the stationary tower under a larger wind speed or from a rotating wind turbine blade. It appears that the wind and by inference the corona discharge shielding do have considerable effect in the initiation of an upward leader. Regarding the initial progression of a positive leader, we found a systematic difference in the speeds of the leaders from the structures that have remarkably different heights. Finally, we discussed the pulse discharges observed in the very initial stages of positive upward leaders and also how to forecast direct strike of upward lightning.

本誌: 電気学会論文誌B（電力・エネルギー部門誌） Vol.131 No.7 （2011）

本誌掲載ページ: 532-535 p

原稿種別: 解説／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejpes/131/7/131_7_532/_article/-char/ja/