Validation and revision of far-field-current relationship for the lightning strike to electrically short objects
Validation and revision of far-field-current relationship for the lightning strike to electrically short objects
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雷击电短路物体的远场电流关系的验证和修正
DOI：
10.1016/j.jastp.2014.08.015
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发表时间：
2014-12
影响因子：
1.9
通讯作者：
Su Jianfeng
中科院分区：
文献类型：
--
作者：
Zhang Qilin;Hou Wenhao;Ji Tongtong;He Lixia;Su Jianfeng
本文对Bermudez et al.（2005）和Bermudez et al.（2007）提出的远场电流因子的一般表达式进行了验证和修正，分别适用于在完全导电地面和有限导电地面上对高大物体的雷击。对于完全导电的地面，当雷电回击电流（RT）上升时间大于5h/c（高于高物体高度，高于光速）时，在距离闪电通道20 km以外，传统方法预测雷电电流峰值的高估值在10%以内，并且随着观测水平距离的减小，由于感应场分量的影响，误差会增大。例如，当距离为10公里时，对300米高的物体的攻击高估了约20%。在电导率为0.01 S/m ~ 0.001 S/m的有限条件下，当闪电击中300 m高的物体时，根据传统方法从实测磁场峰值预测的闪电电流峰值高估了约+5% ~ +20%（正表示高估，负表示低估），由于感应场分量的影响，在20 km范围内推导值较多；当雷击高度为50m的物体时，传统方法预测的电流峰值误差约为+5% ~−15%。
In this paper we have validated and revised the general expressions for far-field-current factors presented by Bermudez et al., 2005, Bermudez et al., 2007 for lightning strike to tall objects on perfectly and finitely conducting ground, respectively. For the perfectly conducting ground, it is found that when the risetime of lightning return stroke current (RT) is larger than 5h/c(his the height of tall object andcis the light speed), the overestimation caused by the traditional method predicting the lightning current peak is within 10% beyond a distance of 20 km from the lightning channel, and with the decrease of observed horizontal distanced, the error will increase due to the effect of induction field component. For example, whendis 10 km, the overestimation is about 20% for strike to a 300-m-tall object. For the finite conductivity ranging from 0.01 S/m to 0.001 S/m, when the lightning strikes the 300-m-tall object, the lightning current peak predicted from the measured magnetic field peak according to the traditional method is overestimated ranging from about +5% to +20% (positive means overestimation while negative means underestimation) and the derivation value is more within a distance of 20 km because of induction field component; When the lightning strikes the 50-m-tall object, the predicted current peak according to the traditional method has an error ranging from about +5% to −15%.
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分形粗糙地面边界对雷电辐射垂直电场的传播效应
影响因子：
5.5
作者：
张其林
通讯作者：
张其林
DOI：
10.1007/s11430-007-0064-2
发表时间：
2006-12
期刊：
Science in China Series D: Earth Sciences
影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
A. Mosaddeghi;F. Rachidi;M. Rubinstein;F. Napolitano;D. Pavanello;V. Shostak;W. Janischewskyj;M. Ny
DOI：
10.1109/sipda.2011.6088435
发表时间：
2011-12
期刊：
2011 International Symposium on Lightning Protection
影响因子：
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作者：
G. Diendorfer
通讯作者：
G. Diendorfer