Analysis of permanent magnet synchronous generator grid connection characteristics based on stored energy frequency modulation control

Abstract

Large scale wind turbines replace traditional generators and are integrated into the power grid. The increase in wind power penetration rate leads to a decrease in the overall inertia of the power system. To alleviate the impact of wind power grid connection on power system stability, a comprehensive frequency regulation control strategy is proposed for wind turbines and energy storage to coordinate and participate in system frequency regulation, in order to achieve adaptive adjustment of active power with system frequency changes. A wind power grid connection simulation model is built using Matlab/Simulink software. The experimental results show that this method can spontaneously respond to frequency difference signals, timely release rotational kinetic energy to provide active compensation, effectively avoiding secondary frequency drops and improving the stability of wind power grid connection frequency.