Cooperative Control Applied for Power Flow Management of a DC Migrogrid Integrated with Energy Storage System
Cooperative control, Microgrids, Distributed Generation, Energy storage system.
The growing energy demand and the increasing social/political concern for the environment has driven the insertion of renewable energy sources (RESs) in the power system. These sourcers are inserted as distributed generation (DGs) systems in the new matrix energy model organized by microgrids (MGs). RESs are dependent on meteorological conditions which make it intermittent and stochastic. To provide the energy balance of these microgrids, it is necessary to integrate energy storage systems (ESSs). Therefore, this work proposes a cooperative control strategy to regulate the power flow of a DC MG with an interconnected ESS. The proposed strategy coordinates the voltage control of the DC bus by Interlink CC (ILC) and by ESS to provide power smoothing. To decouple the control loops from the bus, a Gaussian inference function is used based on the information of the voltage deviation on the DC bus. The proposed technique is validated through digital simulations.