Concepção de um protótipo para estimar parâmetros relacionados à potência e à qualidade da energia elétrica.

Abstract

The concept of prototype design to estimate the parameters to the power and the power of the electric power, able to provide data of consumption, slow values, maximum and minimum values, harmonic individuals up to 50a, total harmonic distortion, voltage unbalance, frequency and powers is presented. A three-phase integrated energy meter 90E36A was used as the electric signal acquisition interface and a single Beaglebone Black board computer for parameter calculation and implementation of the remote interface. The acquired data are processed and, in addition to being saved in a file, are made available to the user in the form of tables and graphs, through a graphical web interface. The prototype developed was characterized and tested in the laboratory when compared to a commercial electric power quality analyzer, used as reference meter. The percentage deviations of the measurements, relative to the reference meter, were evaluated for linear and non-linear loads. The main results are percentage deviations not exceeding 2,40% and 0,05%, respectively, for measurements of effective values and frequency.