Numerical electromagnetic field analysis of lightning current in tall structures

Author

Baba, Yoshihiro ; Ishii, Masaru

Author_Institution

Doshisha Univ., Kyoto, Japan

Volume

16

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

324

Lastpage

328

Abstract

The Numerical Electromagnetic Code (NEC-2) is applied to the electromagnetic analysis of tall structures hit by lightning. The advantage of the analysis using NEC-2 is that it can accurately compute the current distribution along a conductor system by the method of moments. The waveforms of the lightning currents measured on freestanding tall structures are well reproduced, and the computed waveforms of the electric and the magnetic fields at some distance from the structure hit by lightning agree fairly well with the measured waveforms. In the analysis, a lightning channel is represented by a vertical conductor that is loaded by series inductance and resistance so as to simulate the slow propagation velocity of a current wave on the lossy channel. This representation is demonstrated to be quite effective

Keywords

current distribution; electrical engineering computing; electromagnetic field theory; electromagnetic fields; lightning; method of moments; numerical analysis; software packages; NEC-2; Numerical Electromagnetic Code; computer simulation; conductor system; current distribution; current wave propagation velocity; freestanding tall structures; lightning channel; lightning current; lossy channel; method of moments; numerical electromagnetic field analysis; series inductance; series resistance; tall structures; vertical conductor; Conductors; Current distribution; Current measurement; Distributed computing; Electric variables measurement; Electromagnetic analysis; Electromagnetic fields; Lightning; Magnetic analysis; Magnetic field measurement;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.915502

Filename

915502