该公式可计及雷电流波头陡度对磁场的影响。
The formula can reflect the influence of the wavefront steepness of lightning current on the transient magnetic field.
文章提出了基于检测行波电流波头极性的行波电流极性比较式方向保护。
A directional protection based on traveling wave current polarity comparison which is implemented by detecting the polarity of current wavefront of traveling wave is presented.
并研究了典型电磁脉冲试验电流波的频谱特性，为进行电磁脉冲防护提供依据。
And the wave spectrum characteristics of the typical electromagnetic pulse experimental current is studied in order to provide the basis for electromagnetic pulse protection.
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