Avaliação de desempenho de sistemas fotovoltaicos conectados à rede elétrica de baixa tensão em operação na cidade de Itumbiara-GO

Abstract

Distributed generation (DG) is characterized by the proximity between the generation and consumption of electric energy, this type of generation comes growing spectacularly in recent years. In Brazil, among the available fonts to DG, photovoltaic solar generation is the fastest growing, due to your technological evolution, a drop in prices of components (modules and inverters), in addition to the high incidence of solar radiation in the country as a whole, these factors that predict even more the use of Grid Connected Photovoltaic Systems (GCPS). Another factor that boosted the use of these technologies was the publication of normative resolution 687 of 24 November 2015, an update of normative resolution 482, by ANEEL on 17 April 2012, which allows the connection of photovoltaic systems to the network. The update foresees smaller deadlines for installation of GCPS and your main objective is to make the fastest growth of this technology. But even after a year of publication of normative resolution 687, the knowledge about the mini and micro-generation systems PV, is still not widespread. In this respect, this work aims to evaluate the performance of three GCPS in real conditions of operation in the city of Itumbiara-GO. For this analysis, indices of merit were used as reference productivity, system productivity, system losses, performance ratio, capacity factor and overall efficiency of the system. The data used for analysis (solar radiation and temperature) were obtained on the website of the National Institute of Meteorology (NIM). The production of energy data systems were obtained through online monitoring platform of their respective GCPS, provided by the owners. The results show that the systems assessed in this study operate close to the annual average for the region where they are located. Factors like dirt on the modules were identified as the main reason for the bad performance of GCPS. In addition, the correct sizing of the components of GCPS can further improve the performance of the entire system.