| 基于有限元分析方法对接地装置冲击特性研究 |
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| 引用本文： | 陈道辉,钟博宏. 基于有限元分析方法对接地装置冲击特性研究[J]. 电子测量技术, 2017, 40(1): 62-66. DOI: 10.3969/j.issn.1002-7300.2017.01.013 |
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| 作者姓名： | 陈道辉 钟博宏 |
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| 作者单位： | 1. 广东普天防雷检测有限责任公司 广州 510080;2. 广州市气象局 广州 510080 |
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| 摘 要： | 由于冲击电流的作用,接地体周围的土壤将会产生火花效应,使得土壤的电阻率会发生变化,进而对冲击电流的散流过程造成影响.因此本文采用有限元分析方法,利用COMSOL Multiphysics软件,构建了考虑火花效应的接地装置冲击散流模型,主要研究了垂直、水平接地体的冲击散流过程,通过模型的计算发现,接地装置在冲击散流的过程中电流主要从接地装置的末端散流到土壤中,这一情况也与实际情况相符合.
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| 关 键 词： | 火花效应 Maxwell方程 有限元分析 土壤非线性 |
Simulation of impact characteristics of grounding device based on finite element analysis method |
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| Chen Daohui and Zhong Bohong. Simulation of impact characteristics of grounding device based on finite element analysis method[J]. Electronic Measurement Technology, 2017, 40(1): 62-66. DOI: 10.3969/j.issn.1002-7300.2017.01.013 |
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| Authors: | Chen Daohui and Zhong Bohong |
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| Affiliation: | Guangdong Putian Mine Detection Limited Liability Company, Guangzhou 510080,China and Guangzhou Meteorological Service, Guangzhou 510080,China |
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| Abstract: | Due to the impact of the current,the soil around the grounding body will have a spark effect,the resistivity of the soil will be changed,and then the impact of the flow process of the impact of the impact.The finite element analysis method,using the COMSOL multiphysics software,based on the consideration of spark effect of the connected device to impact the bulk flow model,mainly to study the vertical and horizontal connecting the impulse current dispersion process,through model calculations found that grounding device in the impulse current dispersion process of current mainly from the end of the grounding device powder to flow to the soil,this also with the actual situation consistent. |
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| Keywords: | spark discharge Maxwell equations finite element analysis soil non-linear characteristic |
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