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Lightning to earthed structures: Striking distance variation with stroke polarity, structure geometry and altitude based on a theoretical approach
Journal of Electrostatics ( IF 1.8 ) Pub Date : 2021-06-11 , DOI: 10.1016/j.elstat.2021.103599
N.I. Petrov , R.T. Waters

The striking distance and attractive radius of grounded structures to downward lightning strokes depend significantly on the polarity of the stroke. The paper quantifies the reduction of these parameters for positive lightning, together with their lower sensitivity to structure height with the exception of very tall structures. Recent published data on lightning phenomena enables new comparisons of this modelling with field data. Calculations show that the decrease of air pressure, humidity and temperature with increasing altitude results in an increase in striking distance and an increase in the risk of direct lightning strikes for structures in mountain or aviation environments.



中文翻译:

闪电到接地结构:基于理论方法的雷击距离随雷击极性、结构几何形状和高度的变化

接地结构对向下雷击的撞击距离和吸引半径在很大程度上取决于雷击的极性。该论文量化了正闪电的这些参数的减少,以及它们对结构高度的较低敏感性(非常高的结构除外)。最近发布的关于闪电现象的数据使这种建模与现场数据的新比较成为可能。计算表明,气压、湿度和温度随着海拔的升高而降低,导致雷击距离增加,山地或航空环境中的建筑物遭受直击的风险增加。

更新日期:2021-06-11
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