2026-04-272026-04-272026-02-27CALDAS, Pablo Henrique Lisboa. Avaliação dos impactos ocasionados pela conexão da geração fotovoltaica no sistema IEEE 13 barras. Orientadora: Carolina de Mattos Affonso. 2026. 83 f. Trabalho de Curso (Bacharelado em Engenharia Elétrica e Biomédica) – Faculdade de Engenharia Elétrica e Biomédica, Instituto de Tecnologia, Universidade Federal do Pará, Belém, Ano de defesa. Disponível em: https://bdm.ufpa.br/handle/prefix/9492. Acesso em:.https://bdm.ufpa.br/handle/prefix/9492The growth of distributed photovoltaic generation in Brazil has significantly changed the operating conditions of electrical distribution networks, which were originally designed for unidirectional power flow from substations to loads. The connection of photovoltaic systems at low and medium voltage levels contributes to the diversification of the power mix and to the insertion of renewable sources, but it may also cause voltage rise at feeder ends, increase technical losses and modify transformer loading, especially in unbalanced feeders. In this context, the main objective of this work is to analyse the impacts of distributed photovoltaic generation on the voltage profile, active power losses and substation transformer loading in an unbalanced distribution network. The Institute of Eletrical and Eletronics Engineers 13-bus test system is used as the study case, modelled in the Open Distribution System Simulator and automated through Python routines, incorporating daily load profiles and photovoltaic generation profiles derived from solar irradiance data for the city of Rio de Janeiro. Different levels of photovoltaic penetration and seasonal scenarios representative of summer and winter are considered, with generating units connected both at low voltage buses and at a three-phase medium-voltage bus. The results show that installing photovoltaic generation at single-phase remote buses can lead to localized overvoltage and to a substantial increase in overall system losses, whereas a three-phase connection at a central bus tends to raise voltages more uniformly, reduce daytime transformer loading and, at high penetration levels, also intensify losses. The comparison between summer and winter scenarios indicates that the seasonality of solar irradiance directly influences the magnitude of these impacts, making summer the most critical condition in terms of overvoltages and losses.Acesso AbertoGeração distribuídaEnergia fotovoltaicaRedes de distribuiçãoQualidade de energiaDistributed generationPhotovoltaic energyDistribution networksPower qualityCNPQ::ENGENHARIAS::ENGENHARIA ELETRICATrabalho de Curso - Graduação - Monografia