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首页> 外文期刊>Cogent Engineering >Transient electromagnetic field radiated by grounding systems caused by lightning strike in a dissipative half-space
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Transient electromagnetic field radiated by grounding systems caused by lightning strike in a dissipative half-space

机译：闪电击球中的接地系统辐射的瞬态电磁场在耗散的半空间中引起的接地系统

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AbstractIn this work, a method is proposed for the calculation of the electromagnetic field radiated by a grounding system in a semi-infinite dissipative medium subjected to a current excitation generated by the lightning strike. The assessment of the induced current distribution on the grounding system due to a transient excitation is obtained by solving Pocklington’s equation using the method of moments. A new method for the calculation of the transient electromagnetic field following the injection of a lightning current or short circuit is also developed. This method is based on the concept of the hertzian dipoles and the asymptotic expansion of a single dipole. A MATLAB computer program has been developed for the determination of the induced currents. The program is validated by comparing its results with those obtained with the commercial software NEC 4.
机译：摘要这项工作，提出了一种方法，用于计算通过雷击产生的电流激励的半无限耗散介质中的接地系统辐射的电磁场。通过使用瞬间的方法解决Pocklington的等式来获得由于瞬态激发而导致的接地系统上的感应电流分布的评估。还开发了一种新方法，用于计算雷电电流或短路后的瞬态电磁场。该方法基于赫兹偶联的概念和单个偶极子的渐近扩展。已经开发了MATLAB计算机程序以确定诱导电流。通过将其结果与商业软件NEC 4获得的结果进行比较来验证该计划。

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