土壤电离对水平接地电极感应瞬态电流的影响

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI:10.1109/SOFTCOM.2015.7314100

S. Šesnić, D. Poljak, Goran Knezic

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引用次数: 1

摘要

本文讨论了土壤电离对水平接地电极产生的瞬态电流的影响。通过波克林顿方程在时域上的解析解，确定了埋在有耗半空间中的接地电极的瞬态响应。电极由代表雷击电流的等效电流源激发。通过修正像理论(MIT)产生的简化反射系数考虑了地空界面的存在。土壤电离的影响被考虑为当电场的临界值在电极附近超过时土壤电导率的增加。对土壤的不同稳态电导率、不同电极长度和不同雷击类型进行了计算。并将暂态电流的计算结果与不受土壤电离影响的计算结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Influence of the soil ionization on the transient current induced along the horizontal grounding electrode

The paper deals with the assessment of the influence of soil ionization on the transient current induced along the horizontal grounding electrode. Transient response of the grounding electrode buried in a lossy half-space is determined via the analytical solution of the corresponding Pocklington equation in the time domain. The electrode is excited by an equivalent current source representing the lightning strike current. Presence of the earth-air interface is taken into account via simplified reflection coefficient arising from the Modified Image Theory (MIT). The influence of the soil ionization is taken into account as an increase of soil conductivity when critical value of the electric field is exceeded in the vicinity of the electrode. The calculations have been performed for different steady-state conductivities of the soil, various electrode lengths and different types of lightning strikes. The results for the transient current have been compared to the results obtained by calculation without influence of soil ionization.

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2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)

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