A multiagent based decentralized energy management system for power exchange minimization in microgrid cluster

Abstract

Energy management system (EMS) is one of the pillars of next generation of power system called Smart Grid. More distributed generation (DG) produced from renewable energy (RE) will be injected into the distribution power system. EMS has the responsibility to manage this RE generation and conventional one to keep the power balance between generation and consumption. Different architectures of EMS could be found in literature: the centralized, decentralized and distributed. As the centralized architecture is becoming outdated, the decentralized one is the most promising step before implementing a fully distributed system. In this context, development of multiagent systems (MAS) and their tested proprieties increase researchers' interest in applying them in Microgrid (MG) context.This paper implements a decentralized multiagent EMS (DMA-EMS) that manages a MG cluster with fault tolerance feature. Within a single MG, a dedicated multiagent EMS that performs power dispatch with the objective of minimizing power exchange with the grid is implemented. Within the MG cluster, another dedicated EMS is implemented to share power between different MGs. Moreover, the DMA-EMS can manage active power support for the distribution feeder when needed. The implemented management system has proven its reliability and the effectiveness of the proposed management scheme in normal operation as well as in fault conditions through the multiagent JADE platform and Simulink model.