葛南直流大地—金属回线转换实例分析

HU Yuyang

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葛南直流大地—金属回线转换实例分析

更新时间：2025-08-13

- 葛南直流大地—金属回线转换实例分析
- Automation of Electric Power Systems Vol. 41, Issue 23, Pages: 150-155(2017)
- 作者机构：
  
  国网湖北省电力公司检修公司,湖北省,宜昌市,443005
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2017
- 稿件说明：
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HU Yuyang. [J]. Automation of electric power systems, 2017, 41(23): 150-155.
DOI：

HU Yuyang. [J]. Automation of electric power systems, 2017, 41(23): 150-155. DOI：

摘要

高压直流输电系统中，直流转换开关的运行状况直接影响到单极大地—金属回线转换操作的顺利进行。通过对葛洲坝—南桥直流输电系统中发生的一起大地—金属回线异常转换过程的深入分析，得出由于金属返回线路上过高的感应电压造成直流转换开关振荡回路中相关元件损坏，导致该转换开关保护动作和转换操作失败。根据分析结果，提出了针对本次失败转换过程的改进措施和运行建议，可为新建工程设计和运行维护提供参考。

Abstract

In high voltage direct current(HVDC)transmission systems

the status of direct current(DC)transfer switch will influence the conversion of monopole from ground return(GR)to metallic return(MR). By analyzing an abnormal conversion process in Gezhouba-Nanqiao HVDC transmission system

this paper draws a conclusion that too high an induced voltage that occurred in the transmission line did damage to relevant components in the oscillation circuit of DC transfer switch. This leads to the operation failure of transfer switch protection and conversion. In light of the test results

some improvement measures and operation suggestions for this fault operation case are put forward as reference for people in design

operation and maintenance of HVDC transmission systems.

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Related Institution

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