| 10kV配电线路杆塔接地装置冲击特性研究 |
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| 引用本文： | 陈荣锋.10kV配电线路杆塔接地装置冲击特性研究[J].山东电力高等专科学校学报,2014(6):19-24. |
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| 作者姓名： | 陈荣锋 |
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| 作者单位： | 国网福建省电力有限公司厦门供电公司,福建厦门510640 |
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| 摘 要： | 分析10kV配电线路杆塔接地装置的冲击接地电阻特性对于提高配网的供电可靠性起着十分重要的作用。本文采用了考虑土壤火花放电的时域传输线优化模型计算接地装置计算分段导体的电气参数，并建立PSCAD仿真土壤火花效应的等效计算模型：通过对10kV配电线路的水平一垂直型和方格放射型两种常见的接地装置在经过雷电流时．冲击电阻随土壤电阻率，雷电流幅值以及接地装置埋深大小变化的关系，提出在10kV配电线路中根据地质条件、雷电参数和技术经济要求选择合适的接地装置。
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| 关 键 词： | 10kV配电线路 接地装置 冲击特性 火花效应 |
Research on the Impact Characteristic of Tower Grounding Device of 10kV Distribution Line |
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| Chen Rongfeng.Research on the Impact Characteristic of Tower Grounding Device of 10kV Distribution Line[J].Journal of Shandong College of Electric Power,2014(6):19-24. |
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| Authors: | Chen Rongfeng |
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| Affiliation: | Chen Rongfeng( Xiamen Power Supply Company of State Grid, Fujian Electric Power Co., Ltd., Xiamen, 510640, China) |
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| Abstract: | The analysis on characteristics of impulse grounding resistance of l OkV distribution line tower grounding device plays a very important role in improving the power distribution reliability of distribution network.This paper adopts calculation grounding device of the transmission line optimization model of soil spark discharge for calculating the electrical parameters of segmented conductor and establishing equivalent calculation model of PSCAD simulation soil spark effect.Since two common grounding devices,horizontal- vertical and grid radiation of lOkV distribution line impact the resistance with soil resistivity when they flow through lightning current,and through the relationship between lightning current amplitude and changes in buried depth of the grounding devices,this paper proposes the selection of appropriate grounding devices for lOkV distribution line according to geological conditions,lightning parameters and technical and economic requirements. |
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| Keywords: | 10kV distribution line grounding device impact characteristic spark effect |
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