一种快速切除HVDC输电系统接地极线路接地故障的方案

XIAO Yao; NIU Baohong; SHANG Chun; LIN Zhibo; LU Yan; FAN Lingmeng; LI San

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一种快速切除HVDC输电系统接地极线路接地故障的方案

更新时间：2025-08-13

- 一种快速切除HVDC输电系统接地极线路接地故障的方案
- Automation of Electric Power Systems Vol. 33, Issue 18, Pages: 107-109(2009)
- 作者机构：
  
  南方电网超高压输电公司,广东省,广州市,510620
- 作者简介：
- 基金信息：
- DOI：
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- Published：2009
- 稿件说明：
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XIAO Yao, NIU Baohong, SHANG Chun, et al. [J]. Automation of electric power systems, 2009, 33(18): 107-109.
DOI：

XIAO Yao, NIU Baohong, SHANG Chun, et al. [J]. Automation of electric power systems, 2009, 33(18): 107-109. DOI：

摘要

兴安直流输电系统逆变侧接地极线路与直流线路同杆并架敷设。在直流线路遭雷击后，接地极线路因感应过电压继发接地故障，在高压直流（HVDC）输电系统单极故障重启不成功的条件下，两回并行的接地极线路不平衡电流保护动作，导致直流输电系统双极闭锁。为了彻底消除接地极线路故障导致的HVDC输电系统闭锁现象，提出在换流站接地极线路出口处装设直流断路器灭弧的方案，并相应调整了接地极线路的控制和保护策略。

Abstract

On inverter side of Xingren to Baoan HVDC link， grounding electrode line is assembled on the same tower with HVDC line. When HVDC line experiences a lightning， the induced over voltage on grounding electrode line will cause a ground fault. If one of the pole blocks and fails to restart， then the unbalanced current protection for parallel grounding electrode lines actuates to block another pole operation. In order to prevent such a phenomenon， a method of inserting DC breakers into both grounding electrode lines is proposed. The control and protection strategy of the grounding electrode line is adjusted correspondingly.

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