用于提升构网型VSC主导电力系统功率与电压调节的分散式复合控制

Grid-forming voltage source converters (VSCs) are regarded as a promising solution for future converter-dominated power systems, but they still demand advanced control schemes to realize their full potential for robust grid operation. This paper presents a decentralized composite control for grid-forming VSC-dominated power systems. The proposed control scheme integrates model predictive control (MPC)-based voltage control with droop-based synchronization, achieving fast voltage regulation and decentralized power sharing. An augmented MPC for voltage control is developed to enable rapid voltage tracking, while mitigating the impact of power/voltage loop coupling and enhancing power regulation. Furthermore, a disturbance observer is incorporated to estimate external unmeasured values and model parameters uncertainties, effectively compensating for disturbances and ensuring accurate control based on local information. The mechanism underlying the performance improvement brought by the proposed controller is investigated through detailed analysis. The validity of the proposed scheme is verified through MATLAB/Simulink and hardware-in-the-loop real-time simulations in both single- and multi-VSC systems.