电力系统保护与控制2025，Vol.53Issue(20)：34-45,12.DOI:10.19783/j.cnki.pspc.241683
基于限流式潮流控制器的柔直配电系统故障穿越与恢复方案
A fault ride-through and recovery scheme for flexible DC distribution systems based on current limiting power flow controllers
摘要
Abstract
To address the issues in complex modular multilevel converter(MMC)-based DC distribution systems,specifically,converter blocking caused by fault current surges and post-fault power flow overload in non-faulted lines,this paper proposes a fault ride-through and recovery scheme based on a current limiting power flow controller.First,the topological structure and operational principles of the current limiting power flow controller are analyzed.Second,from the perspective of collaborative current limiting between the source side and the network side,a non-blocking fault ride-through scheme for MMC is proposed.This approach ensures selective fault clearance while providing adequate time margin for fault identification.After fault clearance,the scheme enables rapid power balance via adaptive power flow control,effectively meeting the supply demands of multiple feeders.Finally,a complex ring-type flexible DC distribution network model is established in PSCAD/EMTDC for simulation analysis.The results verify that the proposed scheme offers excellent fault ride-through capability and meets both practicality and scalability requirements.关键词
无闭锁故障穿越/限流式潮流控制器/柔直配电网/源网协同/稳态恢复Key words
non-blocking fault ride-through/current limiting power flow controller/flexible DC distribution network/generation-grid coordination/steady-state recovery引用本文复制引用
戴志辉,石浚阳,史琛,江莹,杨怡诗,李恒泽..基于限流式潮流控制器的柔直配电系统故障穿越与恢复方案[J].电力系统保护与控制,2025,53(20):34-45,12.基金项目
This work is supported by the Natural Science Foundation of Hebei Province(No.E2024502043). 河北省自然科学基金项目资助(E2024502043) （No.E2024502043）
