Sizing optimization of a small hydro/photovoltaic hybrid system for electricity generation in Santay Island, Ecuador by two methods

Resumen

Hydrokinetic river (HKT) and photovoltaic (PV) panels systems are of the promising technologies to be used for remote rural electrification. In rural areas with access to water and solar resources, renewable generation is a promising option for electrification. This paper presents a study by two sizing methods for a stand-alone hybrid generation system integrating renewable energies (PV panels and hydrokinetic) and storage system based on battery and backup generator diesel. In the first case, optimal technical sizing is achieved by using basic equations and Simulink Design Optimization (SDO). The other method perform an optimal techno-economical sizing by using the hybrid system optimization software HOMER. These methods have been applied to design a stand-alone hybrid system that supplies the load energy demand for one year, minimizing the use of the diesel generator. The results are reported and discussed in the paper.