A Rule-Based Energy Management System for Smart Micro-Grid

With the rapid development of the society, the social energy structure is changing due to the reduction of nonrenewable energy including oil, natural gas and so on. Many renewable energy sources (RESs) attract increasing attention in the community. However, most RESs can be easily affected by natural factors, resulting in intermittency and power quality issues in power generation. Consequently, the concept of the smart microgrid (SMG) is proposed. In this paper, a SMG model was established through MATLAB/Simulink integrating a solar photovoltaic (PV) generator and a wind turbine (WT) generator, a battery energy storage system (ESS) through power electronic devices. Then, an energy management system (EMS) was designed to monitor and control the performance of the SMG, and this proposed EMS aimes to maximize generated renewable power and achieve maximum economic benefits. Finally, the cash flow analysis was applied to prove the viability of the entire design.