Design and analysis of an embedded secondary and tertiary distributed hierarchical control for an AC microgrid.

Abstract

This project aims to develop an alternative distributed hierarchical control algorithm for a laboratory microgrid with droop control as the primary level, aiming to emulate the voltage and frequency variations of synchronous machines' inertial behaviour. The objective of the alternative control is to be able to work either in grid-connected or islanded mode without changes in the inverter control, operating always as a controllable voltage source. Moreover, it aims to unify the restoration of the voltage and power control levels to avoid undesired interactions between the two control layers. This approach will be based on consensus distributed control technique where each DER will use its local measurement and the neighbours? ones to calculate its control action.