海上风电二极管整流送出系统运行控制方法综述OA

Replacing the modular multilevel converter(MMC)with a diode rectifier unit(DRU)for the HVDC transmis-sion of far-offshore wind power can significantly reduce the size and construction cost of offshore platforms while improving operational reliability.However,the unidirectional and uncontrolled characteristics of the DRU pose major challenges to wind turbine synchronization,frequency stability,and black-start capability,thereby constituting key bot-tlenecks to its engineering applications.Existing studies have primarily focused on specific technical solutions,whereas investigations into the fundamental operating principles of such systems remain relatively limited.To address this gap,this paper analyzes the operating principles of offshore wind farms connected through diode rectifier-based transmission systems from the perspectives of DRU commutation characteristics and wind turbine output characteristics.On this basis,existing topologies and their corresponding control methods are reviewed and classified,and the characteristics and ap-plicable scenarios of different schemes are further discussed.Finally,the remaining challenges and future research directions for diode rectifier-based offshore wind power transmission are outlined.