Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods

WANG Juanjuan; YU Zhenxiao; WANG Haifeng; HE Qihao; LI Huan; FU Chuang

doi:10.13334/j.0258-8013.pcsee.240719

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Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods

更新时间：2026-07-27

- Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods
- Vol. 45, Issue 19, Pages: 7525-7538(2025)
- 作者机构：
  
  1. 华南理工大学电力学院,广东省,广州市,510641
  2. 直流输电技术国家重点实验室(南方电网科学研究院有限责任公司),广东省,广州市,510663
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.240719
  CLC：
- Published：2025
- 稿件说明：
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WANG Juanjuan, YU Zhenxiao, WANG Haifeng, et al. Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods[J]. 2025, 45(19): 7525-7538.
DOI：

WANG Juanjuan, YU Zhenxiao, WANG Haifeng, et al. Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods[J]. 2025, 45(19): 7525-7538. DOI： 10.13334/j.0258-8013.pcsee.240719.

摘要

针对高压直流工程中现有换相失败检测方案存在及时性差、可靠性低和换相失败类型识别缺失等问题，提出基于不同时间区间阀侧电流特征的换相失败识别及检测方案。首先，分析换相失败的发生发展过程，识别出换相失败类型；接着，基于换相回路获得阀侧电流解析式，确定出不同类型换相失败的发生时间区间；再基于不同时间区间下阀侧电流变化幅度和波形极值等动态特征，提出不同换相失败类型的快速识别和检测方法；最后，分别在贵广Ⅱ和三沪直流工程模型中对所提方案进行仿真验证，并分析交流故障程度和控制周期对该方案的影响。仿真结果表明，相较于现有方案，所提方案在及时性、可靠性、识别能力等方面具有明显优势。

Abstract

Aiming at the problems of poor timeliness

low reliability and lack of commutation failure identification in existing commutation failure detection schemes in high voltage direct current (HVDC) engineering

this paper proposes a commutation failure identification and detection scheme based on valve-side current characteristics in different time periods. First

the occurrence and development process of commutation failure is analyzed

and the types of commutation failure are identified. Then

based on the commutation loop

the analytical formulas of the valve-side currents are obtained

and the time periods of different commutation failures are determined. Based on the dynamic characteristics of valve-side current variation amplitude and waveform extremum in different time periods

a fast recognition and detection method for different commutation failure types is proposed. Finally

the proposed scheme is simulated and verified in Gui-Guang-Ⅱ and Three-Gorge-Shanghai DC project models respectively

and the influence of AC fault severity and control period on the scheme is analyzed. Simulation results show that the proposed scheme has obvious advantages in timeliness

reliability and identification ability compared with the existing schemes.

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