Management of a hybrid renewable power plant supplying an isolated rural load within a changing environment

Often, authors deal with the sizing issue of hybrid power plants on horizons of several years. Proposedapproaches are certainly essential to optimize energy costs. However, these solutions cannot remain optimal throughoutthe life cycle of the plant due to the inevitable evolution of the number of households, their consumption profiles, andpossible degradation of a part of the plant. In this paper, an efficient management strategy of a sized hybrid renewablesystem is developed. It is based on the scheduling of the different resources of the plant. The main aim is to minimizethe generated energy cost while ensuring an optimal quality of service and taking into account the evolution of theenvironment. The scheduling issue was modeled as a constrained quadratic problem and solved using the interior-pointconvex algorithm. To show the effectiveness of the approach, several scenarios representing the changing context havebeen developed and implemented on an existing power plant. Obtained results were compared with the case of energydispatch without management and significant energy cost savings was noticed. This work provides an efficient decisionaid tool for the microgrid manager and fits well with the general policy of smart grids

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