电力工程技术2025，Vol.44Issue(6)：165-173,9.DOI:10.12158/j.2096-3203.2025.06.016
新能源直流送出系统受端交流故障穿越控制策略
A grid side fault ride-through control for renewable energy connected MMC-HVDC
摘要
Abstract
Renewable energy connected modular multilevel converter high-voltage direct-current(MMC-HVDC)system should have the capability of fault ride-through when the AC grid fails.However,it is difficult to quickly and reliably achieve fault ride-through via cooperative control if there is no high-speed communication between renewable energy and MMC-HVDC converters.Additionally,the droop coefficient in traditional voltage drop control is set to a linear constant,which makes it difficult to fast match under different fault conditions and results in a longer step delay,leading to high voltage operation of the DC system during the fault.Aiming at the existing problems mentioned above,the dynamic characteristics of the DC system and the principles of traditional voltage drop control are analyzed,which provides a basis for fast power matching on both sides of the DC system.Then,a fault ride-through control based on fast matching power for renewable energy connected MMC-HVDC is proposed.Finally,simulations based on PSCAD/EMTDC show that fault ride-through capability is reliable by using the proposed control method.Compared with traditional voltage drop control,the proposed control method significantly reduces the step delay,limits the rise of DC voltage and achieves fast and reliable fault ride-through.关键词
新能源直流送出/故障穿越/降压法/送出线路/受端故障/功率快速匹配Key words
renewable energy connected modular multilevel converter high-voltage direct-current(MMC-HVDC)/fault ride-through/voltage drop control/transmission line/grid side fault/fast matching power分类
信息技术与安全科学引用本文复制引用
黄强,李宽,范荣奇,李玉敦,董学正,贾科..新能源直流送出系统受端交流故障穿越控制策略[J].电力工程技术,2025,44(6):165-173,9.基金项目
本文得到国网山东省电力公司科技项目"以新能源为主体的新型电力系统继电保护适应性及解决方案研究"(52062622000L)资助,谨此致谢! （52062622000L）
