Avaliação da perda de desempenho por sujeira da usina experimental fotovoltaica TESLA

Abstract

In the last two decades, there has been a growing electricity demand, combined with government incentives to diversify the national energy matrix, leading many consumers to use photovoltaic (PV) modules as an alternative source, both on a small and large scale. However, simply implementing the system is insufficient to ensure maximum local energy use throughout its useful life. Within this premise, this dissertation has as its object of study a photovoltaic system installed at the School of Engineering of the Federal University of Minas Gerais (UFMG), located in Belo Horizonte - Minas Gerais, Brazil, proposing to demonstrate the impacts of environmental conditions such as humidity, temperature and especially dirt on the generating unit. The use of the university as a starting point for this study was based on the search for the interdependence of the local concessionaire at certain times of the day, combined with the analysis of the performance of the current energy production conditions of a plant after its installation in 2016, considering the operating time associated with the low frequency of maintenance employed. Thus, a qualitative assessment is proposed, through on-site visual inspections, and a quantitative analysis where the main metric applied consists of the soiling rate (SR), which presented values of 0.91, 0.92, and 0.93, for the most critical state, considering current values.