Method for improving reactive power dynamic response performance of virtual synchronous power generator

The invention discloses a method for improving reactive power dynamic response performance of a virtual synchronous power generator. The method comprises the following steps of 1) simulating mechanical characteristic of a rotor by an active power control ring to acquire an output frequency, a phase instruction and a power angle of the virtual synchronous power generator; 2) simulating an excitation controller by a reactive power control ring to obtain an output voltage amplitude instruction; 3) calculating voltage compensation quantity according to the power angle obtained in the step 1) and the voltage amplitude instruction obtained in the step 2); and 5) enabling the voltage compensation quantity obtained in the step 4) to be added into the voltage amplitude instruction obtained in the step 2), combining the phase instruction obtained in the step 1) to be taken as a modulation wave, and carrying out pulse width modulation (PWM) to obtain a switching signal driving converter. With the method for improving the reactive power dynamic response performance of the virtual synchronous power generator, proposed by the invention, the influence of power coupling of a traditional virtual synchronous power generator during control can be compensated. Compared with the traditional method, the method has the advantages that the reactive power dynamic response characteristic of the virtual synchronous power generator can be obviously improved.