Medidor inteligente com uma interface para visualização de parâmetros elétricos e de qualidade de energia com suporte à detecção de origem de faltas

Abstract

In this study, a smart meter is presented, which considers the class S measurement methods specified at IEC 61000-4-30 standard and PRODIST. The proposed smart meter calculates RMS voltage and current values, active, reactive and apparent powers, power factor, frequency, harmonic distortions and detects short duration voltage variations. As main contributions of this study, it can be mentioned the evaluation of existing methods and the proposal of a new method to determine on which side of a recording device a disturbance originates. It’s also developed a graphical interface that allows the monitoring of electrical and power quality parameters and it enables consumer interaction to get detailed power grid information. The smart meter can also be used as a data logger and it allows access to its graphical interface through ethernet communication port. For the initial validation, computer simulations were performed through a residential consumer model in different operating scenarios. The experimental validation tests were carried out using an AC power source and the smart meter has been connected to low-voltage distribution grid. Through these steps, it was possible to verify the interface operation and to validate the proposed smart meter operation.