电力系统及其自动化学报2026，Vol.38Issue(6)：26-37,12.DOI:10.19635/j.cnki.csu-epsa.001716
计及虚拟转矩平衡的构网型变流器并联系统暂态同步稳定控制
Transient Synchronization Stability Control for Parallel-connected Grid-forming Converter System Accounting for Virtual Torque Balance
摘要
Abstract
During grid fault disturbances,the dynamic interaction effects within a parallel-connected grid-forming(GFM)converter system become significantly pronounced,elevating the risk of transient synchronization instability.In this paper,a transient interaction model for the parallel-connected GFM converter system is developed,and the under-lying mechanism of transient power-angle instability triggered by the imbalance between the input and output torque in GFM converters under transient energy interactions is determined.On this basis,an enhanced transient synchronization stability control strategy for the parallel-connected GFM converter system is proposed by taking into account the tran-sient virtual torque balance,and the torque balance is realized by modifying the transient virtual torque of the parallel system through the transient angular speed difference between GFM converters.Furthermore,a Takagi-Sugeno fuzzy model is employed to construct an energy function for the parallel-connected GFM converter system,and the variations in the region of attraction under changes in critical parameters and those before and after implementing the proposed en-hanced transient synchronization stability control strategy are analyzed.The correctness and effectiveness of the pro-posed control strategy were validated through simulations and tests on a hardware-in-the-loop experimental platform.关键词
构网型变流器并联系统/暂态虚拟转矩平衡/模糊模型/能量函数/吸引域Key words
parallel-connected grid-forming(GFM)converter system/transient virtual torque balance/fuzzy model/energy function/region of attraction分类
信息技术与安全科学引用本文复制引用
丁洲,苏小玲,裴玮,赵正奎,陈来军..计及虚拟转矩平衡的构网型变流器并联系统暂态同步稳定控制[J].电力系统及其自动化学报,2026,38(6):26-37,12.基金项目
国家自然科学基金资助项目(52167022). （52167022）
