中国电机工程学报2025，Vol.45Issue(11)：4405-4417,13.DOI:10.13334/j.0258-8013.pcsee.240936
混合换相换流系统交流故障输送功率提升策略
Power Enhancement Strategy for AC Fault Transportation in Hybrid Commutated Converter Systems
摘要
Abstract
The hybrid commutated converter(HCC)using reverse-blocking integrated gate commutated thyristors(IGCTs)can complete commutation through the active turn-off of the device,independent of grid voltage,thereby fundamentally addressing the issue of commutation failure.Existing research on HCC is based on the CIGRE control strategy,with the addition of active turn-off judgment.Under this control,during AC fault conditions,HCC increases the advanced firing angle,exacerbating the drop in DC voltage and active power,failing to leverage the advantages of IGCTs.This paper first establishes the transient mathematical model of HCC and analyzes the trend of active power changes.Then,by combining the GIGRE control principle,it reveals the response characteristics and limitations of HCC during AC fault conditions.Considering the range of advanced firing angle adjustment,a strategy for increasing power transmission during AC faults is proposed,which significantly reduces the drop in DC voltage and power shortage during HCC fault conditions.Finally,through electromagnetic transient simulations using PSCAD/EMTD,the effectiveness of the power enhancement strategy under different fault types and depths is verified.关键词
高压直流输电/混合换相换流器/电流源型换流器/交流故障/暂态特性Key words
high voltage direct current(HVDC)/line commutated converter(LCC)/current source converter/AC fault/transient characteristics分类
信息技术与安全科学引用本文复制引用
王以璇,魏晓光,张闻闻,王新颖,李松,杜蕙,赵志斌..混合换相换流系统交流故障输送功率提升策略[J].中国电机工程学报,2025,45(11):4405-4417,13.基金项目
国家重点研发计划项目(2023YFB2405900).National Key R&D Program of China(2023YFB2405900). （2023YFB2405900）
