Design and Characteristic Analysis of Microgrid and Mobile Energy Storage Link

Abstract

For seamless switching between two operating modes of a single microgrid vehicle and power sharing in islanding mode of multiple microgrid vehicles. We first establish the mathematical model of virtual synchronous generator system, and apply the secondary frequency regulation strategy to pre-synchronization on the basis of achieving priority protection for important loads, and change the virtual inertia, damping coefficient and pre-synchronization link of virtual synchronous generator by adjusting the virtual impedance to achieve seamless switching between grid-connected and off-grid modes. On this basis, an adaptive virtual impedance strategy is proposed to realize the balanced power distribution of multi-vehicle parallel system in islanding mode. Ensuring power supply quality and uninterrupted power supply for important loads and non-stop operation of distribution network. Build a microgrid model in Matlab/simlink to verify the effectiveness of the control scheme.