Análise de rendimento de um painel fotovoltaico com o vidro danificado

Abstract

In this final course assignment it is presented a performance study of a photovoltaic panel with its damaged glass. This analysis was made through a modeling carried out in the software 𝑃𝑆𝐼𝑀r and practical exeperimentation. The work was divided in two steps: analysis of theoric cases with different intensities of glass breakage of the physical isolation of the panel, not considering damages to other elements of the system (EVA, conductors and silicon), decreasing only the capacity of absorption of solar irradiation of the photovoltaic cells and a growth of the temperature on it. The relation of the falling ratio of absorption of solar irradiation was estipulated in 50%, 60%, 75% e 100% and the increasement of the temperature in 5% referring to a panel measured in the same physical structure and electric exposed to the same conditions of environment (inclination, incident temperature, irradiation, reexion). Posteriorly, was studied a real situation of breakage of a photovoltaic panel, which was disponibilized by the Grupo Exploração Integrada de Recursos Energéticos (EIRE) in which suffered a falling of its structure of fixation and damaged its glass, EVA and silicon. Due to the impossibility of access to these internal components and real analysis of the damaged suffered by them, was evaluated its fall in income taking into account the behaviour of electric resistance in which its damaged cells have exerced over the arrangement of the PV, increasing its temperature and dissipating electric energy. The results of both analysis served to quantize how musch a photovoltaic system stops producing electric energy if it suffers any physic damage in its structure, increasing then the time of amortization of the investment in its implementation.