电力系统自动化2026，Vol.50Issue(6)：48-61,14.DOI:10.7500/AEPS20250416003
不同构网型双馈风电机组的阻抗建模与并网稳定性分析
Impedance Modeling and Grid-connection Stability Analysis of Various Grid-forming DFIG-based Wind Turbines
摘要
Abstract
Grid-forming control allows the converter to be connected to the power grid as an equivalent voltage source,thereby enabling the system to actively support voltage and frequency.Currently,various grid-forming control strategies have been proposed for doubly-fed induction generator(DFIG)based wind turbines(WTs).However,the differences in small-disturbance stability characteristics among various grid-forming DFIG-based WTs remain unclear.This paper conducts a comparative study on the wideband impedance characteristics and grid-connection stability of five representative grid-forming DFIG-based WTs.Firstly,a unified form of an accurate wideband impedance model for various grid-forming DFIG-based WTs is established,whose accuracy is validated through frequency-scanning simulation.Secondly,the influences of various grid-forming control strategies and control parameters on the wideband impedance characteristics of DFIG-based WTs are comparatively analyzed.The intrinsic mechanistic differences between virtual synchronous generator control and inertial synchronization control are elucidated.On this basis,the generalized Nyquist criterion(GNC)is employed to investigate the influence rules of power grid strength and key control parameters on the grid-connection stability of various DFIG-based WTs.Finally,the correctness of the theoretical analysis is verified through time-domain simulation results.关键词
双馈风电机组/构网型控制/阻抗/稳定性/虚拟同步发电机/惯性同步控制/弱电网Key words
doubly-fed induction generator based wind turbines/grid-forming control/impedance/stability/virtual synchronous generator/inertia synchronization control/weak power grid引用本文复制引用
潘云祥,吕敬,王晗,蔡旭,刘文飞..不同构网型双馈风电机组的阻抗建模与并网稳定性分析[J].电力系统自动化,2026,50(6):48-61,14.基金项目
国家重点研发计划资助项目(2022YFB2402703) （2022YFB2402703）
国家电网公司科技项目(52272222001J). This work is supported by National Key R&D Program of China(No.2022YFB2402703)and State Grid Corporation of China(No.52272222001J). （52272222001J）
