Parallel control method and device of VSG based on inertia / damping parameter cooperation self-adaption

Abstract

The present disclosure relates to a kind of VSG parallel control method and device based on inertia / damping parameter collaborative adaptation.The method includes: the small signal modeling of virtual synchronous generator (VSG) parallel system is carried out, and the second-order system model of the virtual synchronous generator parallel system is generated;The oscillation curve of the angular frequency of single cycle of the virtual synchronous generator parallel system is divided into four intervals, and the influence relationship of the inertia parameter J and the damping parameter D on the power vibration stability of the virtual synchronous generator parallel system is based on, and inertia parameter J adaptive control strategy and damping parameter D adaptive control strategy are respectively assigned to the four intervals;Complete VSG parallel control based on inertia / damping parameter collaborative adaptation.The present disclosure effectively makes up for the deficiency of droop control by adding inertia and damping link in the parallel control strategy of network type PCS, and realizes the collaborative adaptive control of VSG parallel system based on inertia / damping parameter.

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