Documentação de convênios
URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173
Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas
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Resultados da Pesquisa
Item Avaliação da Distorção Harmônica Total de Tensão no Ponto de Acoplamento Comum Industrial Usando o Processo KDD Baseado em Medição(Universidade Federal do Pará, 2018) OLIVEIRA, Edson Farias de; TOSTES, Maria Emília de LimaIn recent decades, the transformation industry has introduced increasingly faster and more energy-efficient products for residential, commercial, and industrial use. However, these loads, due to their non-linearity, have significantly contributed to increased voltage harmonic distortion levels, according to Power Quality indicators. This thesis proposes a procedure based on the Knowledge Discovery in Databases (KDD) process to identify impactful loads on voltage harmonic distortions at the Point of Common Coupling (PCC). The methodology involves data collection and analysis with data mining techniques such as Decision Tree and Naïve Bayes applied to data collected by quality meters installed at the main loads and the PCC of an industrial consumer. The process includes data collection, cleaning, transformation, and evaluation steps. The results showed that the KDD process is applicable in analyzing Total Harmonic Distortion of Voltage, allowing the identification of the most impactful loads, with the most significant being the seventh current harmonic of the air conditioning units.Item Identificação das Componentes Harmônicas em uma Instalação Elétrica através do Fator de Potência Utilizando Inferência Fuzzy(INSTITUTO DE TECNOLOGIA, 2010) NEVES, Cleonor C. das; COSTA JUNIOR, Carlos Tavares da; Profa. Dra. Maria Adrina Paixão de Souza da Silva.This paper proposes a method to identify harmonic components in industrial electrical installations using fuzzy inference and power factor as the main parameter. The linguistic fuzzy logic model was applied to analyze disturbances in the electrical system, based on data collected from a factory in the Manaus Industrial Hub. The study presents an alternative for detecting noise (harmonics) and contributes to improving power quality in electrical systems, using international standards as a reference.Item Lógica fuzzy aplicada ao estudo da qualidade de energia elétrica em um sistema com distorções harmônicas através do fator de potência(INSTITUTO DE TECNOLOGIA, 2010) BRITO JÚNIOR, Jorge de Almeida; LEITE, Jandercy Cabral; COSTA JÚNIOR, Carlos Tavares da; TORRES, Maria Emília de Lima; MAGALHÃES, Edilson MarquesThis paper presents the study of a low-voltage three-phase system with harmonic distortion using fuzzy logic applied to the power factor. The objective is to reduce losses in the installation, voltage drops, and underutilized capacity, optimizing electricity usage and providing benefits to both the company and the utility.Item Metodologia para Diagnosticar a Qualidade de Energia Elétrica Referente à Distorção Harmônica em Sistema Trifásico de Baixa Tensão Utilizando Lógica Fuzzy(Universidade Federal do Pará, 2010) GONÇALVES, Benevaldo Pereira; COSTA JÚNIOR, Carlos Tavares daThis work emphasizes the importance of monitoring and diagnosing the quality of electric power from the viewpoint of harmonic distortion present in low-voltage three-phase electrical installations. The proposed methodology analyzes and diagnoses the level of harmonic disturbances by evaluating the total harmonic distortion (THD) indicator, supported by an expert system based on a Fuzzy inference system. The study presents a systematic approach to assessing power quality, using regulatory standards and recommendations, and demonstrates the effectiveness of Fuzzy logic in formulating precise and standardized diagnostics.Item Os Impactos na Qualidade da Energia Elétrica Oriundos das Lâmpadas Fluorescentes Compactas Instaladas no Programa Luz para Todos(Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares daThe Brazilian Federal Program "Luz para Todos" provides for the installation of 15W compact fluorescent lamps (CFLs) in rural households and underserved communities. This work evaluates the impact on power quality caused by the injection of harmonics generated by these lamps. Measurements of Total Harmonic Distortion (THD) were performed using an AC power source and a power quality analyzer. The results show that CFLs introduce significant distortions in the current, with THD up to 121.2%, which can compromise the quality of power supplied by distribution systems. The study also simulates the impact on a real distribution system of the utility CELPA, highlighting the need to review planning and sizing methodologies for electrical systems to address these disturbances.Item Metodologia para Diagnosticar a Qualidade de Energia Elétrica Referente à Distorção Harmônica em Sistema Trifásico de Baixa Tensão Utilizando Lógica Fuzzy(Universidade Federal do Pará, 2010) GONÇALVES, Benevaldo Pereira; COSTA JÚNIOR, Carlos Tavares daThis work emphasizes the importance of monitoring and diagnosing the quality of electric power from the viewpoint of harmonic distortion present in the electrical installation in low voltage three-phase system using a methodology to analyze and diagnose the level of harmonic disturbances evaluating the overall indicator of distortion Harmonic (THD), supported by an expert system based on a Fuzzy inference system.Item OS IMPACTOS NA QUALIDADE DA ENERGIA ELÉTRICA ORIUNDOS DAS LÂMPADAS FLUORESCENTES COMPACTAS INSTALADAS NO PROGRAMA LUZ PARA TODOS(Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares daThe Brazilian Federal Program "Luz para Todos" provides installation kits that include three 15W compact fluorescent lamps in beneficiary households. These lamps exhibit a high level of harmonic distortion due to their auxiliary equipment. This study assesses the impact of these lamps on power quality by analyzing the injection of harmonics into distribution networks. Measurements of Total Harmonic Distortion (THD) were conducted, extending the analysis to a real distribution system operated by the CELPA utility company. The results indicate high levels of THD, significantly affecting the quality of power supplied to consumers.