电力系统自动化2025，Vol.49Issue(22)：79-89,11.DOI:10.7500/AEPS20250227001
不同构网型直驱风电机组的小扰动动态特性对比分析
Comparative Analysis on Small-signal Dynamic Characteristics of Various Grid-forming Direct-drive Wind Turbines
摘要
Abstract
Grid-forming direct-drive wind turbines emulate the characteristics of synchronous generators,and can actively support the grid voltage and improve the frequency response.Existing research primarily focuses on the frequency response or grid-connected stability of specific grid-forming control strategies,with a lack of comparative studies on the dynamic characteristic differences among various grid-forming control strategies.This paper establishes small-signal frequency-domain dynamic models of reactive power-voltage,active power-frequency,and voltage-current relationships for three typical grid-forming direct-drive wind turbines:virtual synchronous generator(VSG)control,droop control,and inertia synchronization control(ISC).The differences among these three grid-forming direct-drive wind turbines in terms of voltage response capability,frequency response capability,and adaptability to grid strength are compared.Furthermore,the influence of key control parameters on the dynamic characteristics is analyzed.Finally,the correctness of the theoretical analysis is verified through simulations and experimental results.The results indicate that droop control performs best in voltage support capability,VSG control excels in frequency support capability,while ISC shows better adaptability under strong grid conditions.The research results can provide valuable references for the selection and application of grid-forming control strategies.关键词
构网型控制/直驱风电机组/虚拟同步发电机/下垂控制/惯性同步控制/电压支撑/频率支撑Key words
grid-forming control/direct-drive wind turbine/virtual synchronous generator/droop control/inertia synchronous control/voltage support/frequency support引用本文复制引用
王干尧,吕敬,王晗,蔡旭..不同构网型直驱风电机组的小扰动动态特性对比分析[J].电力系统自动化,2025,49(22):79-89,11.基金项目
国家自然科学基金资助项目(52277195). This work is supported by National Natural Science Foundation of China(No.52277195). （52277195）
