Secondary control of microgrids based on distributed cooperative control of multi‐agent systems

TLDR

The study proposes a secondary voltage and frequency control scheme for microgrids using distributed cooperative control of multi‑agent systems. The scheme is implemented over a directed graph with one‑way communication links, enabling each generator to rely only on its own and neighboring information. This distributed approach removes the need for a central controller, enhances system reliability, and simulation results confirm its effectiveness.

Abstract

This study proposes a secondary voltage and frequency control scheme based on the distributed cooperative control of multi‐agent systems. The proposed secondary control is implemented through a communication network with one‐way communication links. The required communication network is modelled by a directed graph (digraph). The proposed secondary control is fully distributed such that each distributed generator only requires its own information and the information of its neighbours on the communication digraph. Thus, the requirements for a central controller and complex communication network are obviated, and the system reliability is improved. The simulation results verify the effectiveness of the proposed secondary control for a microgrid test system.