POWER QUALITY ANALYSIS OF A SMALL PV-WIND-DIESEL HYBRID SYSTEM IN THE COUNTRYSIDEOF THE STATE OF PARá-BRAZIL

摘要

This paper presents a quality analysis of the electric energy supplied by a small PV-wind-diesel hybridsystem to the community of Tamaruteua, located in the county of Marapanim, on the coast of the state of Pará-Brazil. Aspects such as voltage and current harmonic content, frequency stability, and inrush current are taken into account. These electrical parameters were measured with a power quality analyzer. With the measured results, it was possible to evaluate the power quality supplied by the system. All measured parameters are displayed in a set of graphics showing voltage and current waveforms or their corresponding Fourier spectra. It is shown, that the power quality supplied by the PV-wind subsystem is much better than the one supplied by the diesel subsystem alone. It is also observed that, according to the power quality standards, the PV-wind subsystem could also be directly connected to any utility grid, if available.