异性导电媒质对直流接地极跨步电压分布的影响
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TM86

基金项目:

国家电网公司2019年科技指南项目(5200-201955056A-0-0-00)“海洋直流接地极技术研究”


Research on Influence of Anisotropic Conducting Medium on Step Voltage Distribution of DC Grounding Electrode
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为了研究异性导电媒质对直流接地极跨步电压分布的影响,通过CDEGS建立了水平双圆环直流接地极模型,计算了极址外部附近以及极址区域内存在异性导电媒质时的跨步电压分布,结果表明:当接地极极址外部附近存在一块高(低)电阻率的异性媒质时,将会使外环靠近异性媒质区域的溢流密度及跨步电压下降(升高);当极址内部的表层局部区域存在一块高(低)电阻率的异性媒质时,将会使位于异性导电媒质的环段的溢流密度下降(升高),但跨步电压却反而增加(降低);当极址内部的下层局部区域存在一块高(低)电阻率的异性媒质时,将会使位于异性导电媒质的环段的溢流密度和跨步电压同时降低(升高)。研究成果可为直流输电工程中接地极设计及选址提供参考。

    Abstract:

    In order to study the influence of anisotropic conductive medium on the step voltage distribution of DC grounding electrode, a horizontal double ring DC grounding electrode model is established by CDEGS, and the step voltage distribution is calculated when there is a anisotropic conductive medium near and outside the electrode site. The results show that when there is a high (low) resistivity anisotropic medium near the outside of the grounding electrode site, the step voltage distribution will be The overflow density and step voltage of the ring near the anisotropic medium decrease (increase); when there is a piece of anisotropic medium with high (low) resistivity in the local area of the surface layer inside the polar site, the overflow density of the ring section located in the anisotropic conductive medium will decrease (increase), but the step voltage will increase (decrease); When there is a high (low) resistivity anisotropic medium in the lower part of the polar site, the overflow density and step voltage of the ring segment located in the anisotropic conductive medium will decrease (increase) at the same time. The research results can provide a reference for the design and site selection of grounding electrodes in HVDC projects.

    参考文献
    相似文献
    引证文献
引用本文

谭波,童雪芳,刘鸣亚,等. 异性导电媒质对直流接地极跨步电压分布的影响[J]. 科学技术与工程, 2021, 21(4): 1409-1414.
Tan Bo, Tong Xuefang, Liu Mingya, et al. Research on Influence of Anisotropic Conducting Medium on Step Voltage Distribution of DC Grounding Electrode[J]. Science Technology and Engineering,2021,21(4):1409-1414.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-04-17
  • 最后修改日期:2020-08-06
  • 录用日期:2020-08-09
  • 在线发布日期: 2021-02-22
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注