Análise comparativa dos indicadores de desempenho em sistemas fotovoltaicos conectados à rede

Abstract

Accurate and consistent assessments of photovoltaic system performance are essential for the continued development of a country's electricity sector and renewable energy market. The results obtained in this study aim to foster the development and reliability of the sector, as well as generate tools to guide market decisions and identify future needs. It is through quality and performance research that indicators are obtained regarding the ideal configuration of a photovoltaic system, and alerts are given regarding the correct installation and maintenance of the systems. In general, the work seeks to reduce losses caused by poor sizing, installation, or maintenance of solar plants, as well as to standardize average performance parameters for the region. To this end, the study analyzes and compares the performance indices of five grid-connected photovoltaic systems installed in the cities of Itumbiara, Aparecida de Goiânia, Araporã, and Cachoeira Dourada. There are three photovoltaic systems with an AC power of 20 kW and two other plants with an AC power of approximately 33 kW. Due to the significant variation in the characteristics of the studied photovoltaic systems, in terms of configuration, technology, and geographical location, the use of dimensionless indicators is necessary, which enable the comparison of the systems. Therefore, some of the main indicators were chosen, such as performance ratio, capacity factor, reference and specific yields, and overall system efficiency. The system data were obtained thru monitoring provided by the manufacturer's app, while the information on the plant's configuration was supplied by the company responsible for its sizing, installation, and maintenance.