Dynamic Pricing Based Optimal Power Mix of Grid Connected Micro Grid Using Energy Management System

Abstract

This paper proposes a control algorithm for an efficient Energy Management System (EMS) meeting towards minimizing the operating cost of the micro grid in grid connected mode. The microgrid system consists of distributed energy sources mainly renewable energy sources, photovoltaic (PV), Wind Turbine (WT), and Battery Energy Storage (BES) which is lithium-ion battery system is considered as power mix in the analysis. The convex optimization technique is used to determine the optimal scheduling of the microgrid system. To the EMS system, the forecasted wind power, solar power and the electricity market price i.e. time of demand price is given as input parameters. The convex optimization techniques helps to control and provide the day ahead scheduling of power production from each renewable sources, charging and discharging time of the battery storage system. The work tries to show the importance of an energy management system for a dynamic power market from an economic point of view.