Frequency-Voltage Dynamic Modeling and Control of Virtual Synchronous Generators Based Power System
摘要
To improve the stability requirements of power systems with high renewable energy penetration, more and more converters adopt Virtual synchronous generator (VSG) control strategies. Especially, the independent islanded system with distributed power sources and large line impedance is prone to voltage quality and stability problems, which put higher requirements on the dynamic performance of converters. Therefore, this paper constructs a dynamic mathematical model of VSG in an isolated system considering the control dynamic of VSG and the interaction with the line impedance. The proposed model provides an analytical model basis for the dynamic performance improvement of VSG. The correctness of the proposed dynamic model of VSG is verified by dynamic simulation in MATLAB/Simulink.