Distributed Cooperative Secondary Control of Microgrids Using Feedback Linearization

TLDR

The paper proposes a distributed cooperative secondary voltage control for microgrids using multi‑agent systems. The method uses input‑output feedback linearization to transform the secondary voltage control into a linear second‑order tracker synchronization problem, implemented in a fully distributed manner where each generator uses only its own and neighboring information, with tunable parameters for desired response speed. Simulations show that the distributed structure eliminates the need for a central controller and complex communication, enhancing reliability and confirming the controller’s effectiveness.

Abstract

This paper proposes a secondary voltage control of microgrids based on the distributed cooperative control of multi-agent systems. The proposed secondary control is fully distributed; each distributed generator only requires its own information and the information of some neighbors. The distributed structure obviates the requirements for a central controller and complex communication network which, in turn, improves the system reliability. Input-output feedback linearization is used to convert the secondary voltage control to a linear second-order tracker synchronization problem. The control parameters can be tuned to obtain a desired response speed. The effectiveness of the proposed control methodology is verified by the simulation of a microgrid test system.