Determination of the Insulation Condition in Synchronous Generators: Industrial Methods and Case Study

[EN] Electrical Machines, and especially Synchronous Generators (SG), take a significant position in Power Generation plants and in Industry Production Lines and their unscheduled outages may have very negative repercussions. One of the main reasons for their failure relies on the degradation of the...

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Detalles Bibliográficos
Autores: Verginadis, Dimosthenis, Karlis, Athanassios, Danikas, Michael, J. Antonino-Daviu|||0000-0003-1898-2228
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/195759
Acceso en línea:https://riunet.upv.es/handle/10251/195759
Access Level:acceso abierto
Palabra clave:Electrical machines
Diagnostic techniques
Synchronous generator
Electrical insulation
Fault detection
Stator insulation system
Rotor insulation system
INGENIERIA ELECTRICA
Descripción
Sumario:[EN] Electrical Machines, and especially Synchronous Generators (SG), take a significant position in Power Generation plants and in Industry Production Lines and their unscheduled outages may have very negative repercussions. One of the main reasons for their failure relies on the degradation of their stator and rotor insulation systems. Although there are several industrial methods that are commonly used for diagnosing the health of such parts, some critical aspects remain unsolved. This paper reviews the different diagnostic methods and techniques that are most commonly used in practice to determine the condition of these two insulation systems in SG, emphasizing their respective drawbacks and analyzing their variants. Consequently, a case study on a SG operating in a Power Plant in Greece which illustrates the application of all these methods is presented.