Engenharia Elétrica (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2922
Siglas das Coleções:
APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
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Resultados da Pesquisa
Item Análise do impacto da geração distribuída sobre um sistema de proteção de sobrecorrente aplicado ao alimentador teste de 13 barras do IEEE(2023-05-08) Silva Filho, Cláudio Paz da; Araújo, Marcel Ayres de; http://lattes.cnpq.br/0669410110930611; http://lattes.cnpq.br/1775969653837163The constant growth in electricity consumption, combined with the need to use new forms of generation, brings great challenges to the traditional Electric Power System (EPS), a context in which the search for its modernization has been given by the development and implementation of energy sources. Distributed Generation (DG) and Intelligent Electric Networks, or Smart Grids. In this context, the main objective of the present work is the study and evaluation of the protection systems of energy distribution networks against the impacts of the connection and disconnection of distributed generators. Aiming at the development of the research, initially, a theoretical study was carried out to base the functioning and basic requirements of the protection systems. In addition, a study was carried out on distributed generation addressing the impacts caused by its connection to the grid, such as bidirectional power flow, overvoltage, level of voltage imbalance, etc. Together, the study and modeling of photovoltaic solar generation as a source of DG were carried out, in which real data from a photovoltaic module were used to validate all modeling. Still in the methodology, aiming to carry out simulations to analyze the behavior of the protection system against faults and the operating parameters of the distribution network after the insertion of distributed generation, the IEEE 13-bar test feeder and a timed overcurrent protection system was modeled in the SIMULINK/MATLAB® environment. Next, simulations of several test scenarios were carried out with variation in DG allocation with different power levels, in addition to the application of faults at different points in the network. Subsequently, possible strategies for improving network protection were addressed, addressing issues such as changes in the DG power factor, aiming to avoid overvoltages in the system, and the use of intelligent devices for a more assertive performance of the relays. Finally, it could be concluded that the work was successful in the research and studies proposed about the impacts on the protection system in distribution networks caused by the insertion of distributed generation, since, in 38.71% of the simulations, there was action of the protection equipment for the reverse fault.Item Impactos da inserção de geração distribuída no desempenho de funções de proteção de sistemas elétricos(2019-07-17) Guerra, Keylla Rayanne Albuquerque; Reis, Raphael Leite de Andrade; http://lattes.cnpq.br/1139577841043865; http://lattes.cnpq.br/8938549432716009From the need to expand the electric generation due to population and industrial growth, the connection of Distributed Generation (DG) with the electrical system has increased due to its several advantages, such as: minimization of transmission losses over long distances, location near consumer centers, minimizing environmental impacts and greater reliability. Despite being a trend, challenges to the protection system are imposed as contributions to short circuit currents may become more evident with the GD connection. In order to investigate the impact of GD on electrical power system protection functions, fault simulations were performed in the Alternative Transients Program (ATP) software, considering a 230 kV network reported in the literature. Short circuits were simulated along the evaluated power system as well as near the distance protection zone reaching, taking into account different types of disturbances. From the obtained results, the insertion of GD can affect the voltage and current signals measured by the protective device, as well as protection functions, leading them to misoperate if revisions on their adjustment settings are not performed.