广东电力2026，Vol.39Issue(8)：11-25,15.DOI:10.3969/j.issn.1007-290X.2026.08.002
海上风电机组主动频率支撑及故障穿越策略
Active Frequency Support and Fault Ride-through Strategy for Offshore Wind Turbines
摘要
Abstract
To address the problems of voltage sag,power-angle oscillation,and excessive fault current in hybrid grid-connected systems with grid-following and grid-forming converters under high-penetration offshore wind power during severe short-circuit faults,an active frequency support and fault current suppression strategy for offshore wind turbines is proposed.First,a fault current model of the hybrid grid-connected system under a three-phase short-circuit fault is established,and the formation mechanisms of its dc and ac components are analyzed.Then,for the grid-forming converter,improved VSG control and virtual impedance control are adopted to suppress the fault current.For the grid-following converter,a seamless switching strategy between current-limiting mode and grid-forming mode is designed,and a feasible-domain model of control parameters is constructed.Finally,the proposed control method and the parameter feasible-domain analysis results are verified in MATLAB/Simulink.The results show that,compared with conventional control,the proposed strategy can reduce the steady-state fault current by approximately 20%and increase the voltage at the point of common coupling by approximately 10%,providing a reference for fault ride-through control and parameter tuning.关键词
频率支撑/虚拟同步发电机/故障穿越/虚拟阻抗/故障电流/下垂控制Key words
frequency support/virtual synchronous generator(VSG)/fault ride-through/virtual impedance/fault current/droop control分类
信息技术与安全科学引用本文复制引用
杨跃,潘思潮,梁晓兵,张宝议,刘建存,孔祥玉..海上风电机组主动频率支撑及故障穿越策略[J].广东电力,2026,39(8):11-25,15.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20222593) （GDKJXM20222593）
