Power Transformer Diagnosis Using FRA and Fuzzy Sets

GONZÁLEZ ARISPE, JIMMY C.; ENRIQUE MOMBELLO

IEEE LATIN AMERICA TRANSACTIONS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Lugar: New York; Año: 2015 vol. 13 p. 2991 - 2997

1548-0992

This paper presents a novel method for failuredetection and interpretation in power transformers usingFrequency Response Analysis (FRA). Mathematical indexes areused for failure detection. The performance of the most usedmathematical indexes is evaluated and the most sensitive forfrequency response analysis is selected. An approach based on asuitable codification of response frequency bands is proposed forfailure classification. A novel characteristic of this work is theapplication of Fuzzy Sets to represent the mathematical indexlimits for failure detection. The proposed method has beenvalidated using two different case studies, and the diagnosis resultsobtained for them show a good agreement with the real failures