广东电力2026，Vol.39Issue(4)：51-61,11.DOI:10.3969/j.issn.1007-290X.2026.04.005
基于虚拟导纳的构网型变流器功率振荡抑制方法
A Method for Suppressing Power Oscillation of Grid-forming Converter Based on Virtual Admittance
摘要
Abstract
Grid-forming converters exhibit voltage-source characteristics and can provide damping and frequency support for modern power systems,however,they face stability issues when connected to low impedance grids.To address this problem,this paper proposes a power oscillation suppression method based on virtual admittance.First,a small signal model of a grid-forming converter integrated into an AC grid is established.Then,a stability control strategy based on virtual admittance is designed which can enhance system stability by compensating the input current of the current control loop.The effectiveness of the proposed method in improving grid-connection stability is verified through eigenvalue analysis.Furthermore,the dynamics characteristics of the system under different operating conditions before and after applying the virtual admittance control are thoroughly analyzed,and the influence of virtual admittance control parameters on system stability is also investigated,providing a basis for parameter optimization.Finally,time-domain simulations are conducted using a MATLAB/Simulink based grid-connected model,and hardware-in-the-loop validation is performed on a real-time experimental platform.The results demonstrate that the proposed virtual admittance control method can effectively suppress power oscillations of the grid-forming converters in low impedance grids.关键词
构网型变流器/低阻抗电网/虚拟导纳/小信号建模/特征根分析/功率振荡抑制Key words
grid-forming converter/low impedance grid/virtual admittance/small signal modeling/eigenvalue analysis/power oscillation suppression分类
信息技术与安全科学引用本文复制引用
王继祥,黄云辉,王栋,唐金锐,谢长君,周克亮..基于虚拟导纳的构网型变流器功率振荡抑制方法[J].广东电力,2026,39(4):51-61,11.基金项目
广东省基础与应用基础研究基金项目(2023A1515240052) （2023A1515240052）
国家自然科学基金智能电网联合基金重点支持项目(U24B20103) （U24B20103）
