建筑结构中雷电流和磁场分布特性的频域有限元方法分析

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Abstract This paper presents a simplified model of complex steel structure of building, considering the bi-directionally coupled of electric and magnetic field that the lightning transient phenomenon produced. Adopted the frequency domain method based on the finite element, the current distribution and magnetic field was obtained in the complex steel structure. Compared with the existing circuit method and the test results, the validity of the proposed frequency domain finite element method was verified. In the case of four parameters variation, the current distribution and the magnetic field values of the simplified model varies correspondently. The results show that the diameter and conductivity of the conductor minor affect the current distribution and the magnetic field, the frequency of the lightning current affect the current distribution and magnetic field somewhat higher, the lightning current peak value has no effect on the current distribution but it is proportional to the magnetic field. These simulation results give guidelines for designing an LPS.

Key words： Lightning protection system(LPS) lightning current finite element method frequency domain electromagnetic field

Received: 11 October 2013 Published: 22 May 2014

PACS:

TM865

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	Liu Rongmei
	Wang Youhua
	Zhang Yan

Cite this article:

Liu Rongmei,Wang Youhua,Zhang Yan. Frequency Domain Finite Element Analysis of Lightning Current and Magnetic Field Distribution Characteristics in Building Structure[J]. Transactions of China Electrotechnical Society, 2013, 28(2增): 140-145.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I2增/140

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作者简介:刘荣美女, 1980年生, 博士研究生, 研究方向为工程电磁场的数值计算及仿真。汪友华男, 1964年生, 博士, 教授、博士生导师, 研究方向为工程电磁场综合效应、电磁冶金技术及全局优化设计等。