中国电机工程学报2025，Vol.45Issue(19)：7525-7538,中插21,15.DOI:10.13334/j.0258-8013.pcsee.240719
基于不同时间区间阀侧电流特征的高压直流换相失败分析及检测
Analysis and Detection of HVDC Commutation Failure Based on Valve-side Current Characteristics at Different Time Periods
摘要
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.关键词
高压直流/阀侧电流/换相失败/两次连续/两次不连续Key words
high voltage direct current(HVDC)/valve-side current/commutation failure/two consecutive/two inconsecutive分类
信息技术与安全科学引用本文复制引用
汪娟娟,余震霄,王海峰,何启皓,李欢,傅闯..基于不同时间区间阀侧电流特征的高压直流换相失败分析及检测[J].中国电机工程学报,2025,45(19):7525-7538,中插21,15.基金项目
国家自然科学基金项目(52277102).Project Supported by National Natural Science Foundation of China(52277102). （52277102）
