The
notion of energetic complementarity can be a tool for energy resource managers
to prioritize energy generation projects based on renewable resources in both
interconnected and independent systems. As a tool in decision-making, it is
important to know better the influence of energetic complementarity on the
performance of hybrid systems especially with regard to energy shortages but
also in relation to other parameters. In recent years, hydro PV hybrid systems have become a growing
target of researchers and designers for the idea of installing photovoltaic
modules on the water surface of reservoirs. Energetic complementarity has three
components: time-complementarity, energy-amplitude and
amplitude-complementarity. This paper is dedicated to the study of the
influence of time-complementarity on the storage of energy through batteries in
hydro PV hybrid systems. The method applied is in the literature and suggests
the simulation of the system under study with the idealization of energy
availabilities, to remove the effects of climatic variations and the
characteristic intermittency of renewable resources. Simulations were performed
with the well-known software Homer. The results provided the variations of the
states of charge of the batteries as a function of different time-complementarities,
indicating as expected better performances associated to higher
time-complementarities.The results indicated that the cost of energy for a hybrid system with 28
batteries was equal to US$ 0.502 per kWh and that this cost increased as the
time complementarity between energy resources moved away from the situation
corresponding to full complementarity.The
simulations also showed that the maintenance of the zero failure condition
supplying the demands of the consumer loads requires that the load be reduced
to 52% if the complementarity is reduced from the full complementarity to zero
complementarity, with the cost of energy going from US$ 0.502 per kWh to US$
0.796 per kWh. The results also allow a better understanding of the influence
of time complementarity on the performance of hybrid systems.
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