Retorno de investimento de um sistema fotovoltaico com a presença de painéis danificados

Abstract

The practice of using fossil elements, for the conversion of this element into electrical energy shows a great concern to the international community. It is known that these elements will not be restored to nature again, and at some point, they will end, but look for systems that produce energy so that nature is not polluting. Therefore this work of conclusion, of course, shows a research on, return on investment of a photovoltaic system with the presence of damaged panels. The investment of photovoltaic panels was carried out based on a residence in Alegrete in the state of Rio Grande do Sul, Brazil, as a consumption of 575 KW/month, with a biphasic type connection directly installed in the electric grid. Of an economic engineering method known as Payback, which is nothing more than an indicator of the feasibility of the system, to meet the need for the electric power of the residence used 15 photovoltaic panels with a maximum power of 275W. Four-panel break simulations were performed using EXCEL software, showing how much time on average would have an investment return rate for an electric power generation system of 575𝐾𝑊/𝑚𝑜𝑛𝑡ℎ through photovoltaic panels. In the first one we analyzed a totally damaged PV, in the second one it analyzed a PV with 33% damaged, in the third one PV with 66% damaged and in the last analysis two totally damaged PVs, all the four simulations were done in three different stages, with 3 years, 6 years and 9 years of life of photovoltaic panels systems. With the results obtained from the performance analysis of the solar energy system of photovoltaic panels, it was possible to say at what exact moment is indicated the exchange or maintenance of the damaged panels of the system, or if it is not feasible to continue with it damaged.