Comprehensive power flow modelling of hierarchically controlled AC/DC hybrid islanded microgrids

Abstract This paper presents the power flow modelling for AC/DC hybrid islanded microgrids including droop-controlled distributed generation units, secondary frequency and voltage restoration control AC side of microgrid, DC microgrid. The interlink converter between includes a frequency-voltage droop control, considers effect microgrid side. Two case studies are presented model evaluation, in first with linear loads equal characteristic units used; second case, dependent both included, different chosen each unit. Comparisons solutions through proposed professional simulator MATLAB/Simulink presented. Additionally, computational speed convergence rate method shown. obtained results corroborate reliability effectiveness modeling to represent controlled hierarchical controllers.