Contrôle hiérarchique pour les microréseaux à courant continu

Abstract

This study discusses hierarchical control for DC microgrid derived from ISA-95 and power distribution standards to provide microarrays with intelligence and flexibility. The proposed hierarchical control has been implemented and analyzed under the Matlab / Simulink environment, it consists of three levels: 1) Primary control based on the droop method, including a virtual output impedance loop; 2) the secondary control allowing the restoration of the deviations produced by the primary control; and 3) tertiary control which manages the flow of power between the microgrid and the conventional grid. The proposed hierarchical DC microgrid control has been tested and validated in simulation using different test scenarios including: characteristics of a DC microgrid, voltage change and power change. The simulation results obtained show that the proposed hierarchical control models (primary control and secondary control) effectively follow the output voltage in all the scenarios considered.