电气工程学报 ›› 2019, Vol. 14 ›› Issue (1): 89-94.doi: 10.11985/2019.01.016

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关于电力变电站接地若干问题的讨论

王龙宇1,王丙东2,蔡蕾3,李磊1   

  1. 1. 国网冀北电力有限公司 北京 100054
    2. 国网冀北电力有限公司廊坊供电公司 廊坊 065000
    3. 国网天津武清供电有限公司 武清 301700
  • 收稿日期:2019-02-19 出版日期:2019-03-25 发布日期:2019-11-01
  • 作者简介:王龙宇,男,1988年生,硕士,工程师,主要从事电力营销,电力系统继电保护、自动化方面的工作。E-mail: wlysjtu@163.com|王丙东,男,1988年生,硕士,工程师,主要从事变压器运行维护工作。E-mail: wbdtju@163.com

Discussion About Several Issues on Substation Grounding

WANG Longyu1,WANG Bingdong2,CAI Lei3,LI Lei1   

  1. 1. State Grid Jibei Electric Power Company, Beijing 100054 China
    2. Langfang Power Supply Company, State Grid Jibei Electric Power Company, Langfang 065000 China
    3. State Grid Wuqing Power Supply Company, Wuqing 301700 China
  • Received:2019-02-19 Online:2019-03-25 Published:2019-11-01

摘要:

详细介绍了变电站内接地网的相关内容,通过分析站内、站外接地阻抗以及电流分布情况,确定经接地网入地的最大接地短路电流,介绍了站内保护接地网、等电位接地网和相应接地电阻评价标准,以及站内直流地、交流地问题与站内同一个接地网的对应关系,相关内容能够为变电检修人员以及变电站设计人员提供参考。

关键词: 接地, 短路电流, 等电位, 直流接地

Abstract:

Several issues about grounding in substation are introduced. First of all, the algorithm of maximum grounding current is given based on distribution of grounding impedance and short circuit; then the protection grounding grid and equipotential grounding grid with its evaluation standard of corresponding resistance are provided. In the end, the DC grounding and AC grounding system are discussed and the original is same. The above knowledge could provide preference for substation maintenance personnel and substation designer.

Key words: Grounding, short circuit, equal potential, DC grounding

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