Análise estática de estabilidade e qualidade de tensão em cenários de geração distribuída fotovoltaica através do software ANAREDE

Abstract

The quality and stability of voltage are critical aspects in electrical systems as they directly affect the reliable and efficient operation of the power grid. Therefore, it is essential to perform an analysis to monitor the parameters of voltage quality and stability in the electrical system in order to identify and predict potential problems. This work aims to present an analysis of a 30-bus IEEE system using the Continuation Power Flow method with the ANAREDE software to verify and obtain the impacts on the voltage stability margin throughout the day for a system with added distributed photovoltaic generation. Initially, the concepts of generation and its characteristics are presented, along with typical load profile models. Additionally, fundamental concepts related to the study of voltage stability in steady-state are also shown. Based on these concepts, this work proposes an analysis methodology that evaluates the voltage stability margin as a function of the variation in the insertion of distributed photovoltaic generation over a discretized period of 24 hours. Subsequently, the PV curves of the most critical case will be presented for discussing the results. Regarding the results obtained, it is concluded that the voltage stability margin has a significant increase with the insertion of photovoltaic generation and that the initial voltage in the bars increases with the increase of the distributed photovoltaic generation injection.