Lightning electromagnetic field generated by grounding electrode considering soil ionization  

作　　者：ZENG Rong HE Jinliang ZHANG Bo GAO Yanqing 

机构地区：[1]State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China

出　　处：《Progress in Natural Science:Materials International》2006年第9期1002-1006,共5页自然科学进展·国际材料（英文版）

基　　金：Supported by National Natural Science Foundation of China (Grant No. 50407002) the Major State Basic Research Development Program of China (Grant No. 2004CB217906)

摘　　要：A circuit model with lumped time-variable parameter is proposed to calculate the transient characteristic of grounding electrode under lightning current, which takes into consideration the dynamic and nonlinear effect of soil ionization around the grounding electrode. The ionization phenomena in the soil are simulated by means of time-variable parameters under appropriate conditions. The generated electromagnetic field in the air is analyzed by using electrical dipole theory and image theory when the lightning current flows into the grounding electrode. The influence of soil ionization on the electromagnetic field is investigated.有 lumped 时间变量参数的一个电路模型被建议计算在点亮电流下面扎根电极的短暂特征，它在扎根的电极附近考虑土壤电离的动态、非线性的效果。在土壤的电离现象被工具 f 时间变量参数在适当条件下面模仿。当灯光的水流流进扎根的电极时，在空中的产生的电磁的地被使用电的偶极子理论和图象理论分析。电磁的地上的土壤电离的影响被调查。

关 键 词：electromagnetic field grounding electrode soil ionization transient characteristic. 

分 类 号：O441[理学—电磁学]