Power Management of Distributed Generation in The Micro Grid

Abstract

Power management in micro grid including distributed generation consisting of solar, wind, diesel generator and utility system to provide uninterrupted supply to the load has been presented in this dissertation. Modeling of micro sources has been developed from mathematical model of solar, wind power plant and diesel generator. The optimal control system has been developed into the simulation model for power management with variation in generation. The MPPT control has been used for tapping maximum power from the solar energy system. A power control algorithm sharing the generating power from the different micro sources has been developed. It also helps in control of active power and synchronization of micro sources with grid. A complete model of micro grid with different micro sources solar - wind - diesel - utility has been considered for controlled output power according to load demand using Matlab/ Simulink software. The priority of the control algorithm has been to use the power generated by the renewable sources first, and then from the main grid connected to conventional sources. To maintain the uninterrupted supply to critical loads the diesel generator has been used as backup.