An average consensus‐based power‐sharing among VOC‐based distributed generations in multi‐bus islanded microgrids

RWTH Publications (RWTH Aachen)

Abstract

This study proposes a hierarchical control structure for load power-sharing among distributed generations (DG) in a multi-bus microgrid (MG).The proposed control structure uses an average consensus-based distributed protocol (CDP) for the secondary control layer and virtual oscillator control (VOC) as a primary controller.The proposed method can nullify the power-sharing inaccuracy caused by the mismatches of the equivalent impedances seen from the outputs of DGs.The eigenvalue-based small-signal analysis is used to analyse the secondary controller and communication time-delay on system stability.The results of the stability analysis are used to design secondary controller and time-delay compensator.The validity of the proposed method is verified by both offline simulations in Matlab/Simulink and control hardware-in-the-loop (CHiL) using a real-time Opal-RT platform.

Authors 4

1. Trung Tran Thai
2. Igor Sowa Aachen Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   Institute for Automation of Complex Power Systems , RWTH Aachen University , Achen , Germany

3. Dávid Raisz Aachen Institute for Automation of Complex Power Systems

   Budapest University of Technology and Economics · RWTH Aachen University

   Affiliation as printed

   Department of Electric Power Engineering , Budapest University of Technology and Economics , Budapest , Hungary

   Institute for Automation of Complex Power Systems , RWTH Aachen University , Achen , Germany

4. Antonello Monti Aachen Institute for Automation of Complex Power Systems

   RWTH Aachen University

   Affiliation as printed

   Institute for Automation of Complex Power Systems , RWTH Aachen University , Achen , Germany