Coordination Control for Multi-microgrid System with Parallel Structure Based on Improved Droop Control Strategy

Abstract

To solve the problem of the grid control accuracy and the frequency stabilization in on/off process, based on parallel structure of multi-micriogrid, considering the voltage drop and phase offset of long haul line, an improved method is proposed to optimize the droop control to reduce the fluctuate of voltage and frequency. The parallel structure simulation model is established on Matlab/Simulink, and the results verify the rationality and effectiveness of the improved control strategy.