QUALIDADE DE ENERGIA: um estudo de caso

Abstract

Analyzing the use and distribution of electric power in Brazil can be demonstrated every theoretical principles about the parameters used in the analysis of power quality and electromagnetic phenomena caused by disturbances as well as statistical tools to ensure the reliability of the data collected and qualify these data on treatments and diagnostic report based on the study of the indicators. There are several definitions of power quality that describe the same set of phenomena that affect the amplitude and waveform of voltage and current. One of the main definitions claim that interfere in any quality problem in voltage, current or frequency deviation which culminate in failure come or detrimental to the operation of the equipment. Another important definition is that the frequency and severity of deviations in the amplitude and waveform of the voltage and current interfere directly in quality. There is a third definition it is argued that an efficient electrical system is one that presents for a characteristic voltage power supply with clean sine wave form, without changes in your scope and frequency, as if it had as a source of infinite power source.Basedon theoretical elements proposed, we conducted a case study on company in a hotel division located in Boa Esperança, Minas Gerais, where he was presented with the problem of power quality variations. There were collected data and through them statistical treatments were conducted and interpretations of indicators allowing the proposed implementation of device that solve the problems identified.