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Hybrid Microgrid Considering PV Generator and Energy Storage Systems

A laboratory building connected to a hybrid microgrid operates either in interconnected or islanded mode. This microgrid contains a PV generator and storage system. Energy production should be scheduled to provide the load of the building properly to adjust optimally the generation exchange within the microgrid according to a defined methodology. In this work, the problem of decreasing the cost of energy bills is addressed under different constraints and user decisions. An optimization model reducing the power costs of the utility grid is proposed. The ESS performances are achieved according to the peak demand to minimize the using of the grid. The proposed methodology schedules the charging and discharging of the ESS taking account the state-of-charge (SoC) limits. A control technique is used for optimal shifting of the power from the hybrid system. Simulation is executed using GAMS, the obtained results validate that the suggested hybrid system model can decrease the operation cost.