ANÁLISE DE QUALIDADE DE ENERGIA EM AMBIENTE INDUSTRIAL

Abstract

The presente propose extends the teoretical knowledge and the pratical about the energy quality of eletrics charges trough the analysis of cause and effect that can affect equipment and machines of na industrial installation. Initially, the survey was of the current situation of the sector through an energy quality analyzer and later the data collected with current standards will be confronted, presenting next a proposal for the improvement of energy efficiency. The paper addresses a case study in a productive sector of rerrefino of the lubricating oil of an industrial plant in the region of Minas Gerais on the phenomenon electrical and parameters known as, steady state voltage levels, voltage unbalance, harmonic, frequency variation and power factor, covering the full range that involves their behavior. The analysis of the situation of the studied plant made clear the influence of nonlinear loads in the system, because it produced current harmonic levels above the maximum allowed by the standard. Concerning the application of the tuning technique of the filters for harmonic correction, it has been observed through the calculations that the tuned filters are suitable for the filtering of the identified harmonic components, due to the low impedance and small frequency range in the harmonic frequencies in which if you want to filter.