Modeling, Simulation, and Performance Analysis of Power Management Strategies for an Islanded Microgrid

Abstract

Considering both real and reactive power, this paper presents the modeling, simulation, and performances analysis of various power management strategies (PMSs) for the sizing of an enhanced renewable energy penetrated islanded microgrid (IMG), which consists of an integrated photovoltaic-wind-diesel-battery system. The models of the PMSs are illustrated by flowcharts which can be utilized to determine optimal sizes of the IMG components. When the IMG contains both a battery energy storage system (BESS) and a diesel generator system (DGS), there are several ways to meet the load demand. The various options of fulfilling the load demand make the PMSs complex. The complexities in PMSs have significant impact on the incurred costs through the fuel usages rate of DGS and the deterioration level of BESS. The PMSs are presented by considering unknown component sizes of the IMG. The paper considers the effect of reactive power on BESS charging. The effectiveness of the modified PMSs is demonstrated through simulation studies in the MATLAB/Simulink environment. Then the performances of the PMSs are compared and the cost-varying areas are identified meticulously by utilizing the simulation results.