Análise da qualidade de energia no ponto de conexão de inversores de sistemas fotovoltaicos conectados à rede elétrica

Abstract

This study approaches a power quality analysis study at the connection point of inverters of photovoltaic systems connected to the grid, which was performed during the development period of the study, located in the Green Office (EV) of Paraná Federal Technological University (UTFPR), Curitiba campus. We conducted a detailed study of the electrical phenomena present in facilities known as harmonics. First, to study the behavior and operation of a photovoltaic panel, a constructive way and the means of connection. Then a power quality study was conducted, focusing on harmonic components. The study began with the definition of the phenomenon, about which perspective we can observe it and how we can study it. Understanding the causes of harmonics, and their effects on electrical installations, and thus study on measurements performed with equipment to determine harmonic levels in the form of facilities need to be able to understand concepts involving control of them. Then we studied the operation of inverters, components, form of performance and behavior. After the IEC and IEEE standards were analyzed involving harmonics and certain parameters to serve as a benchmark when it is carried out the case study. With all the finalized theoretical framework, were the measurements in green office with equipment and tools needed to measure the results and compare them with the theoretical values given by the standards. The measurements were analyzed thoroughly to understand the power quality of a photovoltaic panel connected to mains.