A Time-Domain Formula for the Horizontal Electric Field at the Earth Surface in the Vicinity of Lightning

被引：44

作者：

Barbosa, Celio Fonseca ^{[1
]}

Saldanha Paulino, Jose Osvaldo ^{[2
]}

机构：

[1] Ctr R&D Telecommun, BR-13086902 Campinas, SP, Brazil

[2] Univ Fed Minas Gerais, Dept Elect Engn, BR-31270010 Belo Horizonte, MG, Brazil

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2010年 / 52卷 / 03期

关键词：

Electromagnetic fields; finitely conducting earth; induced surges; lightning; time-domain analysis; VOLTAGES; LINES;

D O I：

10.1109/TEMC.2010.2047647

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：

This paper presents a time-domain formula for the calculation of the horizontal electric field in the vicinity of the lightning channel. The formula is based on the incident azimuthal magnetic field, so that it does not depend on the assumptions considered in the calculation of the magnetic field, such as return stroke model or propagation effects. The application of the formula with the magnetic field calculated from perfectly conducting earth provided results that agreed very well with results from Sommerfeld integrals, even in the vicinity of the lightning channel, where the Cooray-Rubinstein formula does not hold. The deviations of the results of the formula with respect to the Sommerfeld integrals are on the order of a few percent, which is the same order of magnitude as the deviations involved in the numerical evaluation of Sommerfeld integrals.

引用

页码：640 / 645

页数：6

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