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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Item Metodologia de diagnóstico de manutenção baseada em condição de enrolamentos estatóricos em hidrogeradores(INSTITUTO DE TECNOLOGIA, 2010) SANTOS, Renato Lelio da Silva; OLIVEIRA, Roberto Célio Limão de; LEITE, Jandecy Cabral; Edilson Marques MagalhãesThis paper presents a methodology applied at the Balbina Hydroelectric Power Plant to diagnose faults in stator windings of hydro generators, using partial discharge monitoring as a predictive maintenance tool. This technique enables the identification of insulation deterioration and supports decision-making based on reliable data, reducing costs, increasing reliability, and avoiding unnecessary maintenance. The methodology allows for more effective maintenance planning, extending equipment lifespan.Item Estudio de la influencia del ciclo de arranques y paradas en el estator de generadores síncronicos(INSTITUTO DE TECNOLOGIA, 2013) SANTOS, Renato Lélio da Silva; OLIVEIRA, Roberto Célio Limão de; LEITE, Jandecy Cabral; AZEVEDO, Manoel Socorro Santos; ESTEVES, Anderson Fernandes; MACIEL, Paulo Henrique de Lima; MAGALHÃES, Edilson MarquesSynchronous generators undergo frequent start-stop cycles due to maintenance or external factors, causing thermal variations that affect stator insulation. This study, conducted at the Balbina hydroelectric plant in Amazonas, Brazil, examines insulation aging trends in stators through partial discharge testing. Results indicate that continuous operation increases the generators’ lifespan.Item O Estudo da Influência do Ciclo de Partidas e Paradas no Estator de Geradores Síncronos(Universidade Federal do Pará, 2011) SANTOS, Renato Lélio da Silva; OLIVEIRA, Roberto Célio Limão deSynchronous generators are subjected to different stop situations, such as forced shutdowns, shutdowns due to external conditions, and scheduled shutdowns for corrective and preventive maintenance. The temperature variations to which the synchronous generator is subjected, especially in the stator, affect its insulation, which does not keep up with these constant changes due to different expansion coefficients. This work seeks to identify a trend in the progression of aging of the insulation of stator windings in machines that undergo repetitive starts and stops and remain with their reserve power off for many hours. The study was applied to the five synchronous generators of the Balbina hydroelectric plant, belonging to the Eletrobrás group, which presents this problem. This study confirms the partial discharge analysis tests of synchronous generators carried out periodically to diagnose problems in their stator windings that present different magnitudes and confirms the hypothesis that machines that present higher magnitudes of partial discharges in their stators are those that undergo more amounts of starts and stops and hours with reserve power off.