| 大型变电站接地网接地阻抗与接地电阻的差异 |
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| 引用本文： | 鲁志伟,常树生,李越,文习山.大型变电站接地网接地阻抗与接地电阻的差异[J].高电压技术,2005,31(1):14-16. |
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| 作者姓名： | 鲁志伟 常树生 李越 文习山 |
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| 作者单位： | 1. 东北电力学院电力工程系,吉林,132012
2. 武汉大学电气工程学院,武汉,430072 |
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| 摘 要： | 采用基于场路结合方法开发的接地网接地参数数值计算软件分析了接地网的接地阻抗与接地电阻的差 异。计算结果表明:接地电阻的概念只适用于小型接地网;随着接地网占地面积的加大以及土壤电阻率的降低,接地阻抗中感性分量的作用越来越大,大型地网应采用接地阻抗设计。
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| 关 键 词： | 变电站 接地网 接地阻抗 接地电阻 |
| 文章编号： | 1003-6520(2005)01-0014-03 |
| 修稿时间： | 2004年4月3日 |
Difference Between the Grounding Impedance and Grounding Resistance of Large Substation Grounding Grids |
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| LU Zhiwei,CHANG Shusheng,LI Yue,WEN Xishan.Difference Between the Grounding Impedance and Grounding Resistance of Large Substation Grounding Grids[J].High Voltage Engineering,2005,31(1):14-16. |
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| Authors: | LU Zhiwei CHANG Shusheng LI Yue WEN Xishan |
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| Affiliation: | LU Zhiwei1,CHANG Shusheng1,LI Yue1,WEN Xishan 2 |
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| Abstract: | Based on field-circuit coupling theory, a software of numerical calculation of grounding grids of large substation has been developed and is used to analyze the differences between grounding impedances and groundi ng resistances. The results show that grounding resistances can only be used to small grids. As the area increase or soil resistivity decrease, the inductive co mponents of grounding impedances become greater and greater. Grounding impedance should be used in the design of large substation grounding grids. |
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| Keywords: | substation grounding grids grounding impedance gro unding resistance |
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