Impacto da inserção de geração fotovoltaica em uma instalação rural sob o aspecto da qualidade da energia

Abstract

Photovoltaic Generation Systems (PV) have been increasingly used to generate electricity from renewable sources, attracting growing interest. Recently, grid-connected photovoltaic microgeneration installations in individual households have increased due to government policies as well as increased attention from the industry. As Low Voltage (LV) distribution systems were built to make power flow in one direction, the power supply of photovoltaic generation in rural low voltage networks can influence Power Quality (PQ) as well as operation. And the reliability of the facilities. In this context, the present work studied the effects of the insertion of photovoltaic generation in a rural installation with medium voltage supply under the aspect of energy quality. Firstly, a bibliographic review was prepared on photovoltaic generation systems, their concepts, components, applicable standards, as well as normative aspects regarding power quality for low voltage systems. Subsequently, a representative modeling of the system was developed using the ETAP software and simulations were carried out to investigate the behavior of the system. Finally, an analysis was made in relation to the results obtained in the simulations, comparing them with analyzes already carried out and validated in the literature. The main results were in relation to the contribution to harmonics in the installation by the SGFV in certain inverter configurations. Where, the BB-ACS600 6P inverter model demonstrated a TDH rate of 11.14% and the Rockwell 12 Pulse VFD model achieved a TDH level of approximately 6.97%. The contribution of the SGFV to the voltage level of the installation, raised the voltage level on the load bus from 200 V to 202 V, showing an advantage for its use.