A model to represent negative and positive lightning first strokes with connecting leaders

被引：25

作者：

Cooray, V

Montano, R

Rakov, V

机构：

[1] Univ Uppsala, Angstrom Lab, Div Elect & Lightning Res, S-75121 Uppsala, Sweden

[2] Univ Florida, Dept Elect & Comp Engn, Gainesville, FL 32611 USA

来源：

JOURNAL OF ELECTROSTATICS | 2004年 / 60卷 / 2-4期

关键词：

lightning; return strokes; electromagnetic compatibility; modelling; electric fields; magnetic fields;

D O I：

10.1016/j.elstat.2004.01.016

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A channel base current model of the current generation (CG) type is introduced to describe both negative and positive first return strokes. The key feature of the model is the association of the slow front of the channel base current waveform with the upward connecting leader. This feature is mathematically represented by a discharge propagation speed profile, which is characterized by an initial exponential increase with increasing height. It is shown that the previous models of the CG type may be incapable of reproducing adequately the observed electromagnetic fields when the channel base current contains a slow front. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：97 / 109

页数：13

共 35 条

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