The lightning protection method using pre-phenomena prior to the lightning hitting to a windmill

• Project/Area Number: 20360125
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Gifu University
• Principal Investigator: TAKAGI Nobuyuki Gifu University, 工学部, 教授 (80179415)
• Co-Investigator(Kenkyū-buntansha): WANG Daohong 岐阜大学, 工学部, 准教授 (20273120)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000); Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2009: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2008: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
• Keywords: 雷 / 風力発電 / 防雷対策 / 風力発電設備 / 前兆現象 / 落雷開始地上電界 / 上向き雷

Research Abstract

We have found the occurrence of three pre-phenomena immediately prior to the lightning hitting to a wind mill and its protection tower. The first one is the pre-current with a magnitude of several amperes which flow for a few seconds before the initiation of an upward lightning. The second one is the pre-light-emission from the tip of the wind turbine blade associated with an un-continuous progressing discharge over a distance of several meters. The last one is the phenomenon of increasing electric field strength in the area of several kilometers around the windmill. We have confirmed the possibility of forecasting lightning two seconds ahead using the pre-current.

Research Products

• [Journal Article] Characteristics of winter lightning that occurred on a windmill and its lightning protection tower in Japan (2011)
  • Author(s): D.Wang, N.Takagi
  • Journal Title: Proceedings of 3rd International Symposium on Winter Lightning
  • NAID: 10030605693
  • Peer Reviewed
• [Journal Article] Initiation characteristics and protection of upward lightning discharges, Proceedings of 2010 Asia-Pacific Radio Science Conference (2010)
  • Author(s): D.Wang, N.Takagi
  • Journal Title: Toyama Japan, September Pages: 22-26
  • Peer Reviewed
• [Journal Article] A comparison between self-triggered and other-triggered upward lightning discharges (2010)
  • Author(s): D.Wang, N.Takagi, Y.Takaki
  • Journal Title: Proceedings of 30th International Conference on Lightning Protection 1206 Pages: 1-4
  • Peer Reviewed
• [Journal Article] A comparison between self-triggered and other-triggered upward lightning discharges (2010)
  • Author(s): D.Wang, N.Takagi, Y.Takaki
  • Journal Title: Proceedings of 30th International Conference on Lightning Protection Volume: 1206 Pages: 1-4
  • Peer Reviewed
• [Journal Article] Initiation characteristics and protection of upward lightning discharges (2010)
  • Author(s): D.Wang, N.Takagi
  • Journal Title: Proceedings of 2010 Asia-Pacific Radio Science Conference Pages: 22-26
  • Peer Reviewed
• [Journal Article] Characteristics of lightning to a wind turbine and its lightning protection tower, 4th International Workshop on Electromagnetic Radiation from lightning to tall Structures (2009)
  • Author(s): D.Wang, N.Takagi
  • Journal Title: Montreal Canada
  • Peer Reviewed
• [Journal Article] On the lightning protection of high structures (2009)
  • Author(s): D.Wang, N.Takagi, W.Lu, Y.Zhang
  • Journal Title: Proceedings of the IAMAS/IAPSO/IACS 2009 Joint Assembly, Montreal Canada M17 Pages: 147-147
  • Peer Reviewed
• [Journal Article] Evidence of negative leaders prior to fast rise ICC pulses of upward lightning (2009)
  • Author(s): S.Yoshida, M.Akita, Y.Nakamura, T.Morimoto, T.Ushio, Z.-I.Kawasaki, D.Wang, N.Takagi
  • Journal Title: J.Atmos.Elect. Vol.29, No.1 Pages: 13-21
  • Peer Reviewed
• [Journal Article] Two associated upward lightning flashes that produced opposite electric field changes (2009)
  • Author(s): W.Lu, D.Wang, Y.Zhang, N.Takagi
  • Journal Title: Geophysical Research Letters VOL.36, L05801
  • Peer Reviewed
• [Journal Article] Evidence of negative leaders prior to fast rise ICC pulses of upward lightning (2009)
  • Author(s): S.Yoshida, et al.,
  • Journal Title: Journal of Atmospheric Electricity Vol.29, No.1 Pages: 13-21
  • Peer Reviewed
• [Journal Article] On the lightning protection of high structures (2009)
  • Author(s): D.Wang, N.Takagi, W.Lu, Y.Zhang
  • Journal Title: Proceedings of IAMAS, Montreal Canada 00147
  • Peer Reviewed
• [Journal Article] High energy photon and electron bursts associated with upward lightning strokes (2008)
  • Author(s): S.Yoshida, T.Morimoto, T.Ushio, Z.-I.Kawasaki, T.Torii, D.Wang, N.Takagi, T.Watanabe
  • Journal Title: Geophysical Research Letters VOL.35, L10804
  • Peer Reviewed
• [Journal Article] A discussion of traveling waves involved in the return stroke process. (2008)
  • Author(s): D.Wang, V.A.Rakov, N.Takagi, T.Watanabe
  • Journal Title: J.Atmos. Electr. Vol.28, No.2 Pages: 71-77
  • Peer Reviewed
• [Journal Article] Observed Characteristics of the lightning striking on a windmill and its lightning-protection tower (2008)
  • Author(s): D.Wang, N.Takagi, T.Watanabe, M.Hashimoto
  • Journal Title: Proceedings of 29th International Conference on Lightning Protection, Uppsala, Sweden 9c-1 Pages: 1-7
  • Peer Reviewed
• [Journal Article] Characteristics of Upward Bipolar Lightning Derived from Simultaneous Recording of Electric Current and Electric Field Change (2008)
  • Author(s): D.Wang, N.Takagi
  • Journal Title: Proceedings of URSI E06.2
  • Peer Reviewed
• [Journal Article] Observed characteristics of upward leaders that are initiated from a windmill and its lightning protection tower (2008)
  • Author(s): D.Wang, N.Takagi, T.Watanabe, H.Sakurano, M.Hashimoto
  • Journal Title: Geophysical Research Letters VOL.35, L02803
  • Peer Reviewed
• [Presentation] 自発型と他発型上向き雷放電を引き起こした雷雲電界の比較 (2010)
  • Author(s): 高木良樹、王道洪、高木伸之
  • Organizer: 日本大気電気学会
  • Place of Presentation: 岐阜市ハートフルスクエア
  • Year and Date: 2010-07-16
• [Presentation] 自発型と他発型上向き雷放電の進展様相の比較 (2010)
  • Author(s): 安藤豪規、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] 風車施設落雷時の電界マッピング (2010)
  • Author(s): 鈴木聖吾、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] 自発型と他発型上向き雷放電を引き起こした雷雲電界の比較 (2010)
  • Author(s): 高木良樹、王道洪、高木伸之
  • Organizer: 日本大気電気学
• [Presentation] 上向き雷の枝特性に関する研究 (2010)
  • Author(s): 睿子、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] 上向き正極性リーダに伴うパルス放電の特性 (2010)
  • Author(s): 渡辺智文、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] 上向き雷の電流波形の微細構造について (2010)
  • Author(s): 山本泰裕、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] Optical propagation characteristics of a positive cloud-to- ground lightning flash (2010)
  • Author(s): 王道洪, 高木伸之
  • Organizer: 地球惑星連合
• [Presentation] 正極性落雷の進展特性 (2010)
  • Author(s): 安藤豪規、渡辺智文、丹羽政仁、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] Characteristics of lightning to a wind turbine and is lightning protection tower (2009)
  • Author(s): D.Wang, N.Takagi
  • Organizer: 4th International Workshop on Electromagnetic Radiation from lightning to tall Structures
  • Place of Presentation: Montreal Canada
  • Year and Date: 2009-07-29
• [Presentation] 上向き雷の初期連続電流とその発光強度との相関 (2009)
  • Author(s): 古田覚, 王道洪, 高木伸之
  • Organizer: 日本大気電気学会
  • Place of Presentation: 東京理科大学森戸記念館
  • Year and Date: 2009-01-08
• [Presentation] 上向き雷の開始、進展に関する研究 (2009)
  • Author(s): 鈴木聖吾, 曽根聡敏, 高木伸之, 王道洪
  • Organizer: 電気学会東海支部連合大会
• [Presentation] 上向き雷の電流特性 (2009)
  • Author(s): 澤田憲和, 王道洪, 高木伸之
  • Organizer: 電気学会東海支部連合大会
• [Presentation] 上向き雷の電流特性 (2009)
  • Author(s): 澤田憲和、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Presentation] 上向き雷の初期連続電流とその発光強度との相関 (2009)
  • Author(s): 吉田覚、王道洪、高木伸之
  • Organizer: 日本大気電気学会
• [Remarks] ホームページ等なし