Sistema para análise de qualidade de energia baseado em software livre

Abstract

This document describes the development and implementation of a power analyzer system that is composed by a signal acquisition hardware and a power analyzer software. The acquisition system contains an interface to connect personal computers and transfer the acquired data to be analized by the software. The software was developed using free tools and frameworks, what reduces the development cost. Furthermore, the latest de nitions for power computation are used, that are described by IEEE Std 1459-2010, for unbalanced and non-sinusoidal systems. ITo obtain results with better accuracy, it is used the Kalman lter to decompose the voltage and current signals into their fundamental and harmonic components. This document describe the development of hardware and software, including the internal software structure and implementation details of the power computations. Finally, simulation and experimental results are presented to validate the proposal. Then, these results are compared with theoretical results and the values obtained by the Fluke 434 Power Analyzer.