Hybrid Systems for Laboratory Building

Abstract

A laboratory building connected to a hybrid microgrid operates either in interconnected or islanded mode. This microgrid contains a PV generator and energy storage system. Energy production should be scheduled to provide the load of the building properly in order to coordinate optimally the generation exchange within the microgrid according to a defined methodology. In this paper, we address the problem of reducing the cost of energy bills under different system constraints and user decisions. An optimization model minimizing electricity costs of the utility grid is proposed. The ESS performances are scheduled 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 scheduling of the power from the hybrid system. Simulation is implemented using GAMS, the obtained results confirm that the proposed hybrid system model can minimize the operation cost.