Adaptive Collaborative Control of Virtual Synchronous Generator in Microgrid

The virtual synchronous generator technology introduces rotational inertia and damping factor to improve the impact of frequency oscillation on the grid effectively, but cannot take the properties of dynamic regulation into account. Therefore, a strategy for adaptive collaborative control of rotational inertia and damping factors is proposed in this paper. Firstly, a mathematical model of the virtual synchronous generator is established. On this basis, the influence of each parameter on the dynamic characteristics of the system is analyzed when the power changes. Secondly, the principle of parameter selection is determined. Oscillation and overshoot of transient processes are effectively suppressed by real-time adjustment of rotational inertia and damping factors. Finally, the simulation results verify the effectiveness of the proposed strategy.