Approach for determining a reliable set of spot frequencies to be used during a sweep frequency response analysis (SFRA) for power transformer diagnosis

dc.creatorSecue, Janneth
dc.creatorMombello, Enrique E.
dc.creatorMuela, Edgar
dc.date2008-12-01T08:00:00Z
dc.date.accessioned2022-10-13T13:37:34Z
dc.date.available2022-10-13T13:37:34Z
dc.identifierhttps://ciencia.lasalle.edu.co/scopus_unisalle/686
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4158021
dc.descriptionThe measurement of the frequency response on power and distribution transformers is a diagnostic test technique for detecting winding displacement and deformation (among other mechanical and electrical failures), which are among the most important causes of mechanical failure in transformers. There are two different methods to carry out the measurement of frequency response: Sweep Frequency Response Analysis - SFRA and Low Voltage Impulse - LVI. SFRA presents some important advantages over LVI such as: higher signal to noise ratio, bigger repeatability and reproducibility and less requirements regarding measurement equipment. An important disadvantage of the SFRA with respect to LVI is the time required for the measurement. The necessary time for performing an SFRA test (typically several minutes) is related to the bandwidth and number of spot frequencies, which are not universally defined. This paper presents an approach for determining a reliable number of spot frequencies in order to make a further diagnosis. ©2008 IEEE.
dc.source2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, T and D-LA
dc.subjectCross validation principle
dc.subjectSweep frequency response analysis - SFRA
dc.subjectTransformer
dc.subjectVector fitting
dc.titleApproach for determining a reliable set of spot frequencies to be used during a sweep frequency response analysis (SFRA) for power transformer diagnosis
dc.typeConference Proceeding


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