Analysis of power quality in a system of relay TV

The processing of information through the use of digital equipment and computer technology is largely responsible for the technological advancement, which has reflected in the improvement of the quality of life of the population. As a consequence, there was an increasing use of nonlinear loads in all sectors, particularly in systems for broadcast TV. The knowledge of the response of these loads is important in the search for solutions aimed at improving the quality of electric power. This paper presents measurements on a bus that feeds nonlinear loads in common facilities of a TV relay station and analyze the harmonic distortion of current and whether the individual harmonic distortion and total pressure are in accordance with Resolution 345/2008 by National Agency of Electrical Energy (ANEEL).