电力系统自动化2026，Vol.50Issue(11)：52-60,9.DOI:10.7500/AEPS20250529004
海上风电经DRU串联MMC拓扑混合直流送出系统的启停策略
Start-Stop Strategy of Hybrid DC Transmission System with Series Topology of DRU and MMC for Offshore Wind Power
摘要
Abstract
The hybrid DC transmission system with a series topology of diode rectifier unit(DRU)and modular multilevel converter(MMC)has great economic advantages and has good application prospects in the transmission system of renewable energy bases.First,this paper introduces a hybrid DC topology suitable for offshore wind power transmission systems and control strategies for the sending and receiving ends.In order to solve the power imbalance problem of offshore wind power,DRU and MMC during steady-state operation,two submodule average voltage control strategies are proposed.Then,a collaborative start-stop process between the sending-and receiving-end converters and the offshore wind power system is proposed.The influence of offshore wind power and switching time of DRU AC/DC switch state on the capacitor voltage rise of the sending-end module is analyzed during the start-stop process.Finally,a PSCAD/EMTDC simulation model of diode hybrid DC is constructed to verify the effectiveness of the proposed steady-state operation and start-stop strategy.关键词
海上风电/二极管整流单元/直流输电系统/稳态运行/启停Key words
offshore wind power/diode rectifier unit/DC transmission system/steady-state operation/start-stop引用本文复制引用
陆海洋,李光辉,王伟胜,刘杰,肖云涛..海上风电经DRU串联MMC拓扑混合直流送出系统的启停策略[J].电力系统自动化,2026,50(11):52-60,9.基金项目
国家电网有限公司总部科技项目(5100-202455311A-1-3-ZB). This work is supported by State Grid Corporation of China(No.5100-202455311A-1-3-ZB). （5100-202455311A-1-3-ZB）
