| dc.creator | BARBOSA, Wellington Carlos | |
| dc.date.issued | 2025-04-19 | |
| dc.identifier.citation | Wellington Carlos Barbosa. Detecção de faltas de alta impedância em sistemas de distribuição utilizando transformada wavelet e modelos de aprendizado de máquina. 2025. 86 f. Dissertação (Mestrado em Ciência e Tecnologia da Computação) - Instituto de Ciências Tecnológicas, Universidade Federal de Itajubá, Campus Theodomiro Carneiro Santiago. Itabira, 2025. Disponível em: <https://repositorio.unifei.edu.br/jspui/handle/123456789/4324>. Acesso em: dd mm aaaa. | pt_BR |
| dc.identifier.uri | https://repositorio.unifei.edu.br/jspui/handle/123456789/4324 | |
| dc.description.abstract | The identification of high-impedance faults is a recurring topic in the literature, given the importance of electric power in modern life and the disruptions caused by its absence. High-impedance faults are difficult to identify, presenting peculiarities and characteristics that can easily be mistaken for simple load variations in electrical systems. Conventional methods, such as those used in protection relays, may fail to correctly identify high impedance faults, delaying system restoration. The problems associated with delayed identification can have both economic impacts and pose safety risks to living beings. Therefore, considering the advancements in computational methods and their contribu tions to solving problems across various fields, the objective of this work is to apply these methods to the identification of high-impedance faults. To achieve this, machine learn ing algorithms were employed in combination with the Continuous Wavelet Transform (CWT) to analyze simulated electrical signals in IEEE 13-bus and 34-bus systems. The results showed improvements in the accuracy and precision of fault detection compared to existing methods in the literature, validating the effectiveness of the proposed approach. | pt_BR |
| dc.description.sponsorship | Agência 1 | pt_BR |
| dc.language | por | pt_BR |
| dc.publisher | Universidade Federal de Itajubá | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.subject | Faltas de Alta Impedância | pt_BR |
| dc.subject | High Impedance Faults | pt_BR |
| dc.subject | Relés de Proteção | pt_BR |
| dc.subject | Protection relays | pt_BR |
| dc.subject | Métodos Computacionais | pt_BR |
| dc.subject | Computational methods | pt_BR |
| dc.subject | Inteligência Artificial | pt_BR |
| dc.subject | Artificial Intelligence | pt_BR |
| dc.title | Detecção de faltas de alta impedância em sistemas de distribuição utilizando transformada Wavelet e modelos de aprendizado de máquina | pt_BR |
| dc.type | Dissertação | pt_BR |
| dc.date.available | 2025-04-20 | |
| dc.date.available | 2025-12-03T11:46:04Z | |
| dc.date.accessioned | 2025-12-03T11:46:04Z | |
| dc.creator.Lattes | http://lattes.cnpq.br/9540237355353956 | pt_BR |
| dc.contributor.advisor1 | IZIDORO, Sandro Carvalho | |
| dc.contributor.advisor1Lattes | http://lattes.cnpq.br/8024579151966887 | pt_BR |
| dc.contributor.advisor-co1 | COELHO, Aurélio Luiz Magalhães | |
| dc.contributor.advisor-co1Lattes | http://lattes.cnpq.br/0562416831917984 | pt_BR |
| dc.contributor.advisor-co2 | FARIA, Ivan Paulo de | |
| dc.contributor.advisor-co2Lattes | http://lattes.cnpq.br/3024406702139405 | pt_BR |
| dc.contributor.referee1 | BRAGA, Rodrigo Aparecido Da Silva | |
| dc.contributor.referee1Lattes | http://lattes.cnpq.br/4343678779982973 | pt_BR |
| dc.contributor.referee2 | SILVA, Luiz Eduardo da | |
| dc.contributor.referee2Lattes | http://lattes.cnpq.br/5459510407019521 | pt_BR |
| dc.description.resumo | A identificação de faltas de alta impedância é um tema recorrente na literatura, em vista da importância da energia elétrica no modo de vida moderno e os transtornos causados por sua falta. As faltas de alta impedância são defeitos de complexa identificação, pos suindo peculiaridades e características que facilmente podem ser confundidas com uma simples alteração de carga nos sistemas elétricos. Métodos convencionais, como aqueles utilizados nos relés de proteção, podem apresentar erros na identificação das faltas de alta impedância e protelar o restabelecimento do sistema. Os problemas relacionados à demora na identificação podem ser tanto de ordem econômica quanto de segurança a seres vivos. Dessa forma, considerando a evolução dos métodos computacionais, e a sua contribuição para a resolução dos problemas em diversas áreas, o objetivo deste trabalho é empregar esses métodos para identificação da falta de alta impedância. Para isso, foram utilizados algoritmos de aprendizado de máquina combinados com a Continuous Wavelet Transform (CWT) para analisar sinais elétricos simulados em sistemas IEEE de 13 e 34 barras. Os resultados obtidos demonstraram melhoria na acurácia e precisão da detecção de faltas em comparação aos métodos existentes na literatura, validando a eficácia da abordagem proposta. | pt_BR |
| dc.publisher.country | Brasil | pt_BR |
| dc.publisher.department | PPG - Programas de Pós Graduação - Itabira | pt_BR |
| dc.publisher.program | PPG - Programas de Pós Graduação - Itabira | pt_BR |
| dc.publisher.initials | UNIFEI | pt_BR |
| dc.subject.cnpq | CNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::MATEMATICA DA COMPUTACAO | pt_BR |
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