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

IET Generation Transmission & Distribution, vol. 15, pp. 792–807

Abstract

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 Thai Tran corresponding Aachen Institute for Automation of Complex Power Systems

   RWTH Aachen University · Thai Nguyen University of Technology

   Affiliation as printed

   Faculty of International Training Thai Nguyen University of Technology Thai Nguyen Vietnam

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

   Faculty of International Training, Thai Nguyen University of Technology, Thai Nguyen, Vietnam

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

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

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

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

   RWTH Aachen University · Budapest University of Technology and Economics

   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

   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

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