Discussion on Selection of DC Grounding Point for Flexible DC Converter Station

WANG Zan; FANG Yijun; MEI Nian; WANG Xiongwen; CHEN Dong; WANG Wei; ZHANG Zhaoqing

doi:10.13296/j.1001-1609.hva.2018.12.032

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Discussion on Selection of DC Grounding Point for Flexible DC Converter Station

更新时间：2025-04-26

- Discussion on Selection of DC Grounding Point for Flexible DC Converter Station
- High VoltageApparatus Vol. 54, Issue 12, Pages: 212-217(2018)
- 作者机构：
  
  1. 华北电力大学高电压与电磁兼容北京市重点实验室新能源电力系统国家重点实验室
  2. 国网北京经济技术研究院
  3. 福建省电力勘测设计院
  4. 北京华联电力工程监理公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.12.032
  CLC： TM721.1
- Published：2018
- 稿件说明：
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[1]王赞,方乙君,梅念,王雄文,陈东,王伟,张照青.柔性直流换流站直流接地点选择探讨[J].高压电器,2018,54(12):212-217.

WANG Zan, FANG Yijun, MEI Nian, et al. Discussion on Selection of DC Grounding Point for Flexible DC Converter Station[J]. High voltageapparatus, 2018, 54(12): 212-217.
[1]王赞,方乙君,梅念,王雄文,陈东,王伟,张照青.柔性直流换流站直流接地点选择探讨[J].高压电器,2018,54(12):212-217. DOI： 10.13296/j.1001-1609.hva.2018.12.032.

WANG Zan, FANG Yijun, MEI Nian, et al. Discussion on Selection of DC Grounding Point for Flexible DC Converter Station[J]. High voltageapparatus, 2018, 54(12): 212-217. DOI： 10.13296/j.1001-1609.hva.2018.12.032.

摘要

为了保障人的安全和设备绝缘免于被破坏

文中通过对一种真双极柔性直流输电工程主接线存在的可能运行方式进行分析

提出了系统安全运行的接地方式

并比较了在单端接地运行方式下

设立独立的直流工作接地极和与换流站共用接地极的优缺点。最后通过计算分析得出采用共用接地极

在发生单相接地故障时

地网电位的升高对设备和人身安全的影响

提出了可靠的运行方式和接地方案。

Abstract

In order to protect people’s safety and protect the equipment from being destroyed

the possible operation way of a true bipolar flexible DC transmission project is analyzed in this paper.The grounding of system security operation is proposed based on the analysis.In a single-grounded mode of operation

the advantages and disadvantages

separate DC grounding electrode and common grounding with the converter station pole

is compared.Finally

in the event of single-phase ground fault occurs

the impact of equipment and personal safety is analyzed after increased ground potential

based on the calculation and analysis of sharing earth electrode

a reliable operation mode and grounding scheme is put forward.

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Related Institution

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