一种考虑接地极选址及受端电网结构的偏磁电流减小方法

刘连光; 马成廉

doi:10.11930/j.issn.1004-9649.201904098

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一种考虑接地极选址及受端电网结构的偏磁电流减小方法

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- 一种考虑接地极选址及受端电网结构的偏磁电流减小方法
- A DC Bias Current Reducing Method Considering Grounding Electrode Location and Receiving-end Grid Structure
- 中国电力 2021年54卷第7期页码：100-108
- 作者机构：
  
  1.新能源电力系统国家重点实验室（华北电力大学），北京　102206
  2.东北电力大学输变电技术学院，吉林吉林　132012
- 作者简介：
  
  [ "刘连光(1954—)，男，教授，从事电力系统灾变防治与灾害控制、电力系统规划等研究，E-mail：liulianguang@ncepu.edu.cn" ]
  [ "马成廉(1983—)，男，博士研究生，从事电力系统稳定运行、分析与控制、电网安全运行与灾害防治、高压直流输电接地极相关问题等研究，E-mail：machenglian@neepu.edu.cn" ]
- 基金信息：
  
  国家重点研发计划资助项目(2016YFC0800100)；国家自然科学基金资助项目(51577060, 51677068)
- DOI：10.11930/j.issn.1004-9649.201904098
  中图分类号：
- 收稿：2019-04-19，
  
  修回：2020-01-15，
  
  纸质出版：2021-07-05
- 稿件说明：
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刘连光, 马成廉. 一种考虑接地极选址及受端电网结构的偏磁电流减小方法[J]. 中国电力, 2021,54(7):100-108.

Lianguang LIU, Chenglian MA. A DC Bias Current Reducing Method Considering Grounding Electrode Location and Receiving-end Grid Structure[J]. Electric power, 2021, 54(7): 100-108.
刘连光, 马成廉. 一种考虑接地极选址及受端电网结构的偏磁电流减小方法[J]. 中国电力, 2021,54(7):100-108. DOI： 10.11930/j.issn.1004-9649.201904098.

Lianguang LIU, Chenglian MA. A DC Bias Current Reducing Method Considering Grounding Electrode Location and Receiving-end Grid Structure[J]. Electric power, 2021, 54(7): 100-108. DOI： 10.11930/j.issn.1004-9649.201904098.

摘要

基于受端电网的结构和接地极的位置对直流偏磁电流的影响，分别分析了交流电网各变电站不同联结方式下，换流站和相邻交流变电站在典型连接结构下的直流偏磁电流（DCBC）水平。分析了影响换流变压器和交流变压器DCBC值的因素，阐述了接地极选址及受端电网结构对变压器DCBC值的影响机理。考虑到受端电网结构和接地极的位置选择，提出了一种降低换流变压器和交流变压器的DCBC的方法。可从系统运行方式选择，接地极位置选择，电网结构规划设计等方面分析抑制DCBC的措施，建议在规划和设计阶段对换流变压器及交流变压器进行偏磁电流的防治。

Abstract

Based on the influence of the receiving-end grid structure and the grounding electrode location on DC bias current

this paper analyzes the DC bias current (DCBC) level of the converter station and the adjacent AC substation in the typical connection structure under different connection modes of the AC substations. The factors affecting the DCBC value of converter and AC transformers are analyzed

and the influence mechanism of the grounding electrode location and the receiving-end grid structure on the transformer DCBC value is expounded. Considering the structure of receiving-end grid and the location selection of grounding electrode

a DCBC value reduction method for converter and AC transformers is proposed. The measures to suppress the DC bias current can be analyzed from the aspects of system operation mode selection

grounding electrode location selection

power grid structure planning and designing

etc. This paper proposes to prevent the bias current of the converter and AC transformer during the planning and designing stage.

关键词

Keywords

references

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