Utilização de medidores eletrônicos de energia na supervisão e controle do fator de potência

Abstract

The quest for improve energy efficiency in electrical systems, on a global scale, is directly associated with systems with high power factor, since this is one of the indicators of a better use of available energy resources. The purpose of this work is to demonstrate by means of an experimental model, the guidelines for monitoring in real time, through an electronic energy meter,of the effectiveness of the power factor correction mechanism (s) employee (s) in a "real" system. The experimental model directed at didactic purposes and presented in this work includes hardware and software. The hardware consists of: a microcomputer, a panel containing the electronic meter, CT’s, interfaces with the computer and switching devices and load protection; the load simulated by the combination of resistive and inductive modules; the capacitor bank simulated by the association of capacitive modules. The supervision software used was the ELIPSE E3 ®, which was programmed to make the following functions: the supervision of electrical measurements extracted from electronic energy meter; the correction of the power factor through the capacitive switching modules; the monitoring of the effectiveness of the power factor correction.