Energy Management for a Microgrid With Different Charging and Discharging Priorities of Batteries Using Modified Grey Wolf Optimizer

Abstract

Energy management plays an important role in the efficient and reliable operation of microgrid with various distributed energy resources. In this paper, the energy management of an isolated microgrid involving two batteries and other distributed energy resources such as photovoltaic, wind turbine and diesel generator is presented. For obtaining a better energy management, a modified grey wolf optimizer is proposed to determine the optimal power schedule plan of a microgrid. Moreover, different charging and discharging priorities of the two batteries result in operation cost and the equivalent pollutant gas emissions are investigated so as to obtain a more economic operation strategy. Simulation results show a good reduction in operation cost and pollution emissions as well verify the effectiveness of our proposed approach.