Detalhes bibliográficos
| Ano de defesa: |
2008 |
| Autor(a) principal: |
SOUZA, Denise Cascão Poli
 |
| Orientador(a): |
RIBEIRO, Cacilda de Jesus
|
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Mestrado em Engenharia Elétrica e de Computação
|
| Departamento: |
Engenharia
|
| País: |
BR
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tde/961
|
Resumo: |
Power transformers have a fundamental role in an electrical power system, in addition to representing a significant amount of investment required for the implantation of this system. To reduce the costs associated with a transformer s life cycle and to guarantee its reliability and durability, it is essential to monitor its operating conditions, its insulation system as well as the working conditions of its accessories and other components. Therefore, the aim of this work is to study the faults and defects that occur in power transformers of 34.5kV, 69kV, 138kV, and 230kV of Celg s electrical system, the latter being a highly important electric energy concessionaire in Goiás State, Brazil. The results of this study corroborate its contributions to the field, namely, the efficacy of the predictive technique in the maintenance area during the last twenty-eight years (from 1979 to 2007), the characterization of faults and defects during this period, and the presentation of proposals to implement improvements in the predictive technique, in order to reduce the number of interruptions in the electrical power system. |
