接地网垂直接地极地表传导电流分析

doi:10.11930/j.issn.1004-9649.2017.02.157.05

中国电力 ›› 2017, Vol. 50 ›› Issue (2): 157-161.DOI: 10.11930/j.issn.1004-9649.2017.02.157.05

接地网垂直接地极地表传导电流分析

徐嘉龙¹, 祝郦伟², 王晓宇², 严华江², 杨帆³, 沈晓明²

1. 国网浙江省电力公司,浙江杭州 310007;
2. 国网浙江省电力公司电力科学研究院,浙江杭州 310014;
3. 重庆大学电气工程学院输配电装备及系统安全与新技术国家重点实验室,重庆 400442

收稿日期:2016-09-09 出版日期:2017-02-20 发布日期:2017-02-22
作者简介:徐嘉龙（1970—）,男,浙江杭州人,高级工程师,从事电网生产和科技管理工作。E-mail:932880876@qq.com
基金资助:
国家电网公司科技资助项目（5211DS120348）

Analysis of Conduction Ground Surface Current at Vertical Grounding Electrode in Grounded System

XU Jialong¹, ZHU Liwei², WANG Xiaoyu², YAN Huajiang², YANG Fan³, SHEN Xiaoming²

1. State Grid Zhejiang Electric Power Corporation, Hangzhou 310007, China;
2. State Grid Zhejiang Electric Power Corporation Research Institute, Hangzhou 310014, China;
3. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400442, China;

Received:2016-09-09 Online:2017-02-20 Published:2017-02-22
Supported by:
This work is supported by Science and Technology Project of State Grid Corporation of China (No. 5211DS120348).

摘要/Abstract

摘要： 垂直接地极作为一种有效降低接地网接地电阻的方法,在接地网图纸缺失或图纸与实际不符情况下,面临准确探测位置等问题。根据安培环路定律,提出通过测量地表传导电流来探测接地网垂直接地极位置的方法。通过理论公式推导,推算垂直接地极及其连接地网支路在地表产生的传导电流分布情况;再构建有/无垂直接地极的接地网模型,仿真垂直接地极对地表传导电流的影响。理论分析和模型仿真验证表明,测量地表传导电流能够有效地探测垂直接地极位置,方法简单,可进一步用于接地网3D结构成像。

关键词: 接地网, 垂直接地极, 传导电流, 变电站, 探测

Abstract: The vertical grounding electrode is an effective method to reduce grounding resistance. When grounding system drawings are missing or incorrect, it is important to detect vertical grounding electrode position accurately. According to ampere’s law, a method is proposed to locate vertical grounding electrode position by measuring conduction current of ground surface. Firstly, the conduction current distribution of vertical grounding grid and its connection branch is generated through the theoretical formula. Secondly, grounding grid model is constructed with and without vertical grounding electrode to simulate effect of vertical grounding electrodes on conduction current. Theoretical analysis and simulation model both indicate that vertical grounding electrode can be located effectively by measuring conduction current of ground surface. The detection method is simple, and can be used in further 3D imaging of grounded system structure.

Key words: grounding grid, vertical grounding electrode, conduction current, substation, detection

中图分类号:

TM863

徐嘉龙, 祝郦伟, 王晓宇, 严华江, 杨帆, 沈晓明. 接地网垂直接地极地表传导电流分析[J]. 中国电力, 2017, 50(2): 157-161.

XU Jialong, ZHU Liwei, WANG Xiaoyu, YAN Huajiang, YANG Fan, SHEN Xiaoming. Analysis of Conduction Ground Surface Current at Vertical Grounding Electrode in Grounded System[J]. Electric Power, 2017, 50(2): 157-161.

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https://www.electricpower.com.cn/CN/Y2017/V50/I2/157

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接地网垂直接地极地表传导电流分析

Analysis of Conduction Ground Surface Current at Vertical Grounding Electrode in Grounded System

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接地网垂直接地极地表传导电流分析

Analysis of Conduction Ground Surface Current at Vertical Grounding Electrode in Grounded System

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