| Lightning electromagnetic field generated by grounding electrode considering soil ionization |
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| 作者姓名： | ZENG Rong HE Jinliang ZHANG Bo GAO Yanqing |
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| 作者单位： | State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 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.
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| 关 键 词： | electromagnetic field grounding electrode soil ionization transient characteristic. |
Lightning electromagnetic field generated by grounding electrode considering soil ionization |
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| ZENG Rong,HE Jinliang,ZHANG Bo,GAO Yanqing.Lightning electromagnetic field generated by grounding electrode considering soil ionization[J].Progress in Natural Science,2006,16(9):1002-1006. |
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| Authors: | ZENG Rong HE Jinliang ZHANG Bo GAO Yanqing |
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| Institution: | State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | 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. |
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| Keywords: | electromagnetic field grounding electrode soil ionization transient characteristic |
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