Abstract
Hybrid power system interconnecting photovoltaic, wind-power and battery is becoming more and more popular in our society; it presents a solution of the energy problems. This article presents two combined optimization techniques; the first optimization introduces a proposed sizing optimization for a hybrid system under smart grid by dividing the loads into three categories: high priority load (must be always supplied), others with a medium priority, and low priority load (can be supplied when the production is available at some levels). The second technique optimizes the cost of the hybrid system by connecting a minimum number of panels necessary to cover the energy need of the high priority load; on the other side, it connects the number of batteries required so as not to have a lack of energies during the night, and this in function of sunset time of each season.
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