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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Effects of Return Stroke Parameters and Soil Water Content on EMF Characteristics
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Effects of Return Stroke Parameters and Soil Water Content on EMF Characteristics

机译：回程参数和土壤含水量对EMF特性的影响

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摘要

Electromagnetic pulses produced by lightning return strokes travel long distances both aboveground and underground. This study investigated the effects of return stroke parameters on electromagnetic propagation over lossy ground. The lightning return stroke channel was modeled using the Modified Transmission Line with Exponential Decay (MTLE) model. Electromagnetics was modeled using a frequency domain solver in the form of finite element analysis via COMSOL software. The studied stroke current parameters were peak, rise time, and decay time. In addition, the effects of soil water content was studied. Aboveground and underground electric and magnetic fields followed and were directly affected by the lightning current waveshape. The underground fields were affected by soil water content. In contrast, the aboveground fields are not affected by water content except for the radial electric field.
机译：雷击产生的电磁脉冲在地面和地下传播很长一段距离。这项研究调查了回程参数对有损地面上电磁传播的影响。雷电回程通道使用具有指数衰减的修正传输线（MTLE）模型进行建模。使用频域求解器通过COMSOL软件对电磁学进行有限元分析。研究的行程电流参数为峰值，上升时间和衰减时间。另外，研究了土壤水分的影响。地上和地下的电场和磁场随之而来，并直接受到雷电流波形的影响。地下田地受到土壤水分的影响。相反，除了径向电场外，地上磁场不受水含量的影响。

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