Revisión del Análisis de Respuesta en Frecuencia (SFRA) para Evaluación de Desplazamientos y Deformaciones de Devanados en Transformadores de Potencia (Review of Sweep Frequency Response Analysis -SFRA for Assessment Winding Displacements and Deformation in Power Transformers)

Janneth Rocío Secue (jsecue@iee.unsj.edu.ar)1, Enrique E Mombello (mombello@iee.unsj.edu.ar)1, Carlos V. Cardoso (cavica@usp.br)2


1Instituto de Energía Eléctrica - Universidad Nacional de San Juan
2Universidad de San Pablo

This paper appears in: Revista IEEE América Latina

Publication Date: Sept. 2007
Volume: 5,   Issue: 5 
ISSN: 1548-0992


Abstract:
The Sweep Frequency Response Analysis SFRA is a diagnostic technique for detecting winding displacement and deformation (among other mechanical and electrical failures) on power and distribution transformer in which the diagnosis relies on experts' knowledge. SFRA as a diagnostic technique must integrate both the off-line measurements and the interpretation of the data in order to provide a assessment to the condition of the windings, however there is not a guideline for the measurement and the process of interpretation the records has not been defined. This paper presents a revision about the variants in the metrology and interpretation of the SFRA measurements.

Index Terms:
Transformer, Sweep Frequency Response Analysis -SFRA, Winding displacement, Winding deformation   


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