电力系统自动化2026，Vol.50Issue(11)：3-14,12.DOI:10.7500/AEPS20250913003
海上风电海陆一体直流组网系统构建及直流故障穿越方法
Construction of Offshore-Onshore Integrated DC Networking System and DC Fault Ride-through Method for Offshore Wind Power
摘要
Abstract
The high-efficiency transmission of power from 10-gigawatt-scale offshore wind power bases is crucial for supporting large-scale offshore wind power development.Novel collection and networking schemes are being actively explored both domestically and internationally.This paper presents a comparative analysis of the scenario applicability for three types of networking schemes:offshore DC hubs,offshore AC hubs,and onshore DC hubs.Focusing on the scenario of transmitting power from the ultra-large-scale Yangjiang offshore wind farm cluster directly to inland load centers,an offshore-onshore integrated networking and transmission scheme based on an onshore DC hub is investigated.The configuration scheme using modular multilevel converter(MMC)topologies,DC circuit breakers,and DC high-speed switches(HSS)in the DC networking is proposed.For the configuration scheme of"hybrid half-bridge/full-bridge MMC+HSS",an excess power balance scheme that does not rely on centralized DC energy dissipation devices is introduced and applied in an actual engineering project.Three methods for the rapid activation of distributed energy dissipation in offshore wind turbines are proposed,followed by a comparative analysis of the characteristics and applicability of these methods.Combined with an engineering case study,the feasibility of the offshore-onshore integrated networking and transmission system and its DC fault clearing and ride-through methods is validated through digital simulation,which provides a new solution for the high-efficiency transmission of power from ultra-large-scale offshore wind farms in practical engineering applications.关键词
海上风电/海陆一体组网/模块化多电平换流器/快速开关/故障穿越/分布式耗能Key words
offshore wind power/offshore-onshore integrated networking/modular multilevel converter(MMC)/high-speed switch(HSS)/fault ride-through/distributed energy dissipation引用本文复制引用
李岩,邹常跃,宋强,黄一洪,赵晓斌,卢毓欣..海上风电海陆一体直流组网系统构建及直流故障穿越方法[J].电力系统自动化,2026,50(11):3-14,12.基金项目
国家自然科学基金资助项目(U23B20112). This work is supported by National Natural Science Foundation of China(No.U23B20112). （U23B20112）
