电力系统自动化2025，Vol.49Issue(17)：81-89,9.DOI:10.7500/AEPS20241227002
海上风电多端柔性直流输电系统及直流故障处理方案
Multi-terminal Flexible DC Transmission System for Offshore Wind Power and Its DC Fault Clearance Scheme
摘要
Abstract
The multi-terminal flexible DC transmission system for offshore wind power can achieve power supply from multiple sources to multiple landing points.It can be transmitted to the load center through onshore DC overhead lines to improve the utilization rate of transmission corridors in coastal areas.It is an efficient and economic solution for the large-scale far-offshore wind power grid connection in the future.This paper introduces the topology and main equipment configuration scheme of the multi-terminal flexible DC transmission system for offshore wind power,and the system adaptability is introduced from the perspectives of reliability,economy and flexibility.In response to DC overhead line faults,permanent faults,and neutral line faults in the system,the technical characteristics of DC circuit breakers,half-bridge submodule converters,high-speed switches,and AC circuit breakers are fully utilized,and the detailed fault clearance schemes are given by combining the characteristics of each fault,to achieve rapid DC fault isolation and recovery of the system.Based on the PSCAD/EMTDC simulation platform,a five-terminal bipolar offshore wind power grid-connected system is built,and the feasibility of the proposed scheme is verified through steady-state operation and various DC faults.关键词
海上风电/柔性直流输电/直流故障/架空线路/直流断路器/半桥子模块换流器/快速开关/交流开关Key words
offshore wind power/flexible DC transmission/DC fault/overhead line/DC circuit breaker/half-bridge submodule converter/high-speed switch/AC circuit breaker引用本文复制引用
马秀达,卢宇,詹长江,姜崇学,董云龙,黄如海..海上风电多端柔性直流输电系统及直流故障处理方案[J].电力系统自动化,2025,49(17):81-89,9.基金项目
国家电网公司科技项目(5100-202349004A-1-1-ZN). This work is supported by State Grid Corporation of China(No.5100-202349004A-1-1-ZN). （5100-202349004A-1-1-ZN）
