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Authors
Advisor(s)
Abstract(s)
Nesta dissertação, é realizado o estudo e parametrização dos relés de proteção para
geradores e transformadores de grupo de uma central hidroelétrica. É efetuada, também,
uma breve abordagem à manutenção e ensaio dos respetivos relés.
No fornecimento de Energia Elétrica aos seus consumidores, deve-se ter em consideração
todo o funcionamento do Sistema Elétrico de Energia (SEE). Como os SEE são projetados
para gerar energia elétrica para responder à carga, é necessário garantir que este assegure o
fornecimento de energia elétrica com elevados padrões de qualidade e continuidade de
serviço. Assim, as proteções revelam, um papel fulcral na garantia da continuidade de
serviço.
As proteções são constituídas por equipamentos de proteção nomeadamente, relés de
proteção, que são dispositivos cuja função é retirar de serviço os equipamentos em defeito,
permitindo que o restante sistema elétrico seja alimentado.
Os sistemas de proteção são, assim, de extrema importância, já que têm como função,
assegurar, garantir e eliminar anomalias evitando danos nos equipamentos e nos
utilizadores/consumidores.
This thesis concerns the study and set-up of protective relays for the generator and transformer groups of a hydroelectric plant. It also approaches in a brief way, the testing and maintenance of referred relays. The supply of electricity to consumers, should take into account the whole operation of the Electric Power System. The Electric Power Systems are designed to generate electricity to respond to the load and so it is necessary to ensure that the supply of electricity with high standards of quality and continuity of service is maintained. Therefore, the electrical protections play a very important role in ensuring this continuity of service. The protections are implemented with special equipment such as protective relays, whose function is to isolate the equipments where the fault appears, thus allowing the remaining electrical system to continue operating. Electrical protection systems are of extreme importance since these ensure the safety of users/consumers and prevent damages to the equipments, by selectively isolating and eliminating anomalies.
This thesis concerns the study and set-up of protective relays for the generator and transformer groups of a hydroelectric plant. It also approaches in a brief way, the testing and maintenance of referred relays. The supply of electricity to consumers, should take into account the whole operation of the Electric Power System. The Electric Power Systems are designed to generate electricity to respond to the load and so it is necessary to ensure that the supply of electricity with high standards of quality and continuity of service is maintained. Therefore, the electrical protections play a very important role in ensuring this continuity of service. The protections are implemented with special equipment such as protective relays, whose function is to isolate the equipments where the fault appears, thus allowing the remaining electrical system to continue operating. Electrical protection systems are of extreme importance since these ensure the safety of users/consumers and prevent damages to the equipments, by selectively isolating and eliminating anomalies.
Description
Keywords
Sistemas de proteção Relés de proteção Gerador Transformador Manutenção Protection systems Protective relays Generator Transformer Maintenance
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto