电力系统自动化2026，Vol.50Issue(4)：10-23,14.DOI:10.7500/AEPS20250104003
海上风电柔直并网系统多模态振荡交互分析和抑制方法
Analysis and Suppression Method for Multi-modal Oscillation Interaction in Flexible DC Grid-connected System of Offshore Wind Power
摘要
Abstract
In flexible DC grid-connected system of offshore wind power,there exists a possibility of simultaneous occurrence of medium-frequency oscillation(MFO)and sub-synchronous oscillation(SSO).At present,most of the related oscillation research work only focuses on the formation mechanism of single-frequency oscillations,making it difficult to reveal the interaction paths among different frequency oscillation modes when MFO and SSO appear simultaneously.Therefore,this paper focuses on the analysis of the interaction and suppression mechanism between MFO and SSO in the flexible DC grid-connected system of offshore wind power.Firstly,modal analysis method is utilized to investigate the possibility of the simultaneous occurrence of MFO and SSO in the flexible DC grid-connected system of offshore wind power.Subsequently,based on the dynamics of the grid-side inverter and its controller,the interaction path between MFO and SSO is analyzed to reveal the mechanism of secondary oscillation components generated by their combined action.Finally,oscillation suppression methods have been studied to achieve the effective suppression of MFO,SSO and secondary oscillations.关键词
海上风电/风电并网系统/柔性直流/模态分析法/次同步振荡/中频振荡/次级振荡Key words
offshore wind power/wind power grid-connected system/flexible DC/modal analysis method/sub-synchronous oscillation(SSO)/medium-frequency oscillation(MFO)/secondary oscillation引用本文复制引用
张智豪,寇鹏,田润泽,张远航,梅铭洋,黄阮明..海上风电柔直并网系统多模态振荡交互分析和抑制方法[J].电力系统自动化,2026,50(4):10-23,14.基金项目
智能电网重大专项(2030)资助项目(2024ZD0801300). This work is supported by Smart Grid-National Science and Technology Major Project(No.2024ZD0801300). （2030）
