Intermittent turn-to-turn winding faults diagnosis in power transformers by the...

• Autor(es): Oliveira, L. M. R. ; Cardoso, A. J. Marques
• Data: 2008
• Identificador Persistente: http://hdl.handle.net/10400.1/4071
• Origem: Sapientia - Universidade do Algarve
• Assunto(s): Fault diagnosis; Power transformers; Transformers windings
• Tipo de Documento: Documento de conferência
• Idioma: Inglês

Descrição

This paper presents the application of the on-load exciting current Park's vector approach for diagnosing permanent and intermittent turn-to-turn winding faults in operating power transformers. A digital model for the simulation of the behavior of three-phase transformers affected by the presence of winding faults is also proposed. Experimental and simulated results demonstrate the effectiveness of the proposed diagnostic technique, which is based on the on-line monitoring of the on-load exciting current Park's Vector patterns.