东北电力技术2026，Vol.47Issue(1)：9-13,5.
考虑电感效应的大尺寸接地体冲击散流过程建模分析
Modeling and Analysis of Impulse Dispersion Process in Large-Scale Grounding Electrodes Considering Inductive Effects
摘要
Abstract
The impulse dispersion process is a key link that affects the performance of the tower grounding grid,and it requires accu-rate modeling.It is based on Maxwell's electromagnetic field theory to establish a coupled model that takes into account the inductive effect of the grounding body and the soil ionization process,accurately simulating the impulse dispersion process.Based on this mod-el,it expounds the influence of the inductive effect of the grounding body and the soil ionization process on the impulse grounding re-sistance.It analyzes the influence of wave head time on impulse grounding resistance.This model can simulate the impulse dissipation process in the ground quite well,and the calculation results are relatively accurate.The error of the impulse grounding resistance is less than 10 Ω.The inductance effect of the grounding body leads to the earlier peak moment of the transient GPR(ground potential rise),causes overshoot in the GPR waveform,and increases the impulse grounding impedance.The soil ionization process has a rel-atively small impact on the GPR waveform,but it will reduce the impulse grounding impedance.As the wave head time shortens,the impulse grounding resistance increases accordingly and shows a saturation trend.关键词
电感效应/电离过程/冲击散流/有限元建模/地电位升Key words
inductive effect/ionization process/impulse dispersion/finite element modeling/GPR分类
信息技术与安全科学引用本文复制引用
晏伟宸,陶文明,孙琰,孙希宁..考虑电感效应的大尺寸接地体冲击散流过程建模分析[J].东北电力技术,2026,47(1):9-13,5.基金项目
山东省重点研发计划项目(2023CXGC010111) （2023CXGC010111）
