Impact Assessment of Photovoltaic Distributed Generation on Celesc Low-Voltage Network

Abstract

The presence of distributed generation (DG) in low-voltage networks is increasing, aiming at the use of photovoltaic solar energy. In the current model of energy compensation, only the injection of active power is foreseen. There is no commitment from the generating units to contribute to the voltage system regulation. For utilities, it is necessary to research the consequences caused by DG growth in the technical losses and consumers power quality. In this context, this work presents a study on the impacts caused by distributed photovoltaic generation in Celesc’s low-voltage network. Four feeders are evaluated, with different load profiles, using the OpenDSS simulation software. The results show profile changes in the technical losses and feeders voltages, depending on the DG power in the networks.