太原理工大学学报2025，Vol.56Issue(3)：445-452,8.DOI:10.16355/j.tyut.1007-9432.20230542
计及故障合闸角的特高压直流输电换相失败控制策略
Commutation Failure Control Strategy of UHVDC Transmission Considering Initial Fault Angle
摘要
Abstract
[Purposes]Commutation failure(CF)is one of the common faults in the line-commutated converter-based Ultra-high Voltage Direct Current(LCC-UHVDC).In order to reduce the probability of CF in DC transmission,a lot of research on CF control strategies have been carried out.At present,the CF prevention control(CFPREV)strategy is widely used.It is found that this control strategy is easily affected by the initial fault angle,so that the trigger angle cannot be triggered in time under certain fault conditions,which leads to CF.[Methods]On the basis of CFPREV,a CF prevention and control strategy for UHVDC transmission considering initial fault angle was pro-posed.Pearson coefficient was used to reflect the change of dissipated energy waveform before and af-ter fault in real time,which can improve the starting speed of CFPREV and avoid CF to a certain ex-tent.[Results]The effectiveness of the suggested suppression strategy has been confirmed by the simulation results of a UHVDC transmission system constructed in MATLAB/SIMULINK.关键词
特高压直流输电/换相失败/故障合闸角/耗散能量/皮尔逊系数Key words
UHVDC/commutation failure/initial fault angle/dissipate energy/pearson coeffi-cient分类
信息技术与安全科学引用本文复制引用
成功,张峥,王小波,卫泽,李平伟..计及故障合闸角的特高压直流输电换相失败控制策略[J].太原理工大学学报,2025,56(3):445-452,8.基金项目
国网山西省电力公司科技项目(520510220002) （520510220002）
