帰還雷撃の工学モデルと雷電磁界パルス計算への応用

• 馬場 吉弘

  同志社大学

書誌事項

タイトル別名

• Review of Engineering Models of the Lightning Return Stroke and their Application to Lightning Electromagnetic Pulse Calculations
• キカン ライゲキ ノ コウガク モデル ト ライデン ジカイ パルス ケイサン エノ オウヨウ

抄録

In this technical note, recently proposed engineering models of the lightning return stroke and their application to lightning electromagnetic pulse calculations are reviewed and evaluated. In Section 2, the transmission line model and the traveling current source model, which have been used most frequently out of engineering models of the lightning return stroke attached to flat ground, are described. Then, two models, which have been proposed recently and can reproduce all of five features observed in typical measured lightning electromagnetic field waveforms at different distances from a lightning channel, are explained. In Section 3, two models for the lightning return stroke attached to a tall grounded object are reviewed. One is the distributed shunt current source model, and the other is the lumped series voltage source model. In Section 4, expressions for calculating electric and magnetic fields radiated from a lightning return stroke channel (and a tall strike object if present), from the current distribution along the lightning channel given by an engineering return stroke model, are shown. Three different expressions for electric field are shown here. The first one is a most widely used expression derived using Lorentz condition, the second one is an expression derived recently using the continuity equation, and the last one is an expression valid only in the restricted condition that the return stroke wavefront speed is equal to the speed of light and a return stroke current wave propagates without attenuation or dispersion. In Section 5, new findings obtained from electromagnetic calculations using the engineering models for the lightning return stroke attached to a tall object are shown. For example, the vertical electric field in the vicinity of a tall strike object is reduced significantly by the presence of the tall object, while remote electric and magnetic fields are enhanced by it.

収録刊行物

• 電気学会論文誌Ｂ（電力・エネルギー部門誌）

  電気学会論文誌Ｂ（電力・エネルギー部門誌） 128 (5), 785-794, 2008

  一般社団法人 電気学会

キーワード

• 帰還雷撃
• 工学的モデリング
• 雷電磁界パルス

詳細情報

• CRID: 1390282679579819520
• NII論文ID: 10021130794
• NII書誌ID: AN10136334
• DOI: 10.1541/ieejpes.128.785
• ISSN: 13488147
• ISSN: 03854213
• NDL書誌ID: 9495859
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9495859
• Web Site: http://www.jstage.jst.go.jp/article/ieejpes/128/5/128_5_785/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可