伸长接地体上冲击电流和电压分布特性的研究

The Research for Impulse Current and Voltage Distribution of Extended Grounding Electrode

为深入了解伸长接地体上雷电流的泄散过程 ,利用反映接地体火花放电过程和冲击电流波过程的非线性差分电路模型 ,研究了伸长接地体上冲击电流和电压的分布特性。结果表明 ,它们主要分布在接地体始端 ,分布曲线在 8～12 m以外趋于平缓。

In order to understand the knowledge on the behavior of extended grounding electrode thoroughly, using a nonlinear differential circuit model which relfected the spark process and the propagation process of the impulse current on extended grounding electrode, this paper researches the impulse current and voltage distribution on extended grounding electrode, analyzes the relations of these distribution to incoming impulse current peak value, soil resistivity and electrode length. Some analysis results were obtained.