Characterizing Micro-grid Operational Functions with Multilevel Distributed Energy Resources

New energy supply alternatives have been integrated to the electric distribution network via intelligent control schemes based on suitable and vast architecture for optimizing grid energy flows. In this new environment, microgrid becomes a feasible entity, and energy management systems necessitate a framework for its operational functions where specific criteria can be achieved in real time decisions. The paper aims at introducing a perceptional frame for such microgrid architecture, and discussing interrelationships between heterogeneous agents, components and modules. It is intended to facilitate their functionality in energy management systems through efficient and intelligent ways.