Abstract

DE ARMAS TEYRA, Marcos Alberto  and  RUIZ PEREZ, Alvinn. Power, Voltage and Current Oscillations in Distributed Generation Units. Energética [online]. 2013, vol.34, n.2, pp. 108-118. ISSN 1815-5901.

In distributed and standby power plants driven by reciprocating motors, is important to know the voltage, current and power oscillation as a delivery power quality and diagnostic criteria. There are several oscillation causes. The fundamental is due to the irregular torque of primary motors. Other causes are due to constructive eccentricities, current unbalance, time and spatial harmonics, changes in systems configuration, etc. In this paper the fundamental oscillations of a grid connected machine were evaluated with a power analyzer installed in one generating power plant. As a case there are shown the observed oscillations in 425 kVA generator driven by a four times, six cylinders Diesel motor in Cienfuegos Province of Cuba.

Keywords : power quality; reciprocating engines driven generator; oscillations.

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