Approach for determining a reliable set of spot frequencies to be used during a sweep frequency response analysis (SFRA) for power transformer diagnosis
DOI
https://doi.org/10.1109/TDC-LA.2008.4641722
Document Type
Conference Proceeding
Publication Date
12-1-2008
Publication Title
2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, T and D-LA
Abstract
The 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.
ISBN
9781424422180
Recommended Citation
Secue, Janneth; Mombello, Enrique E.; and Muela, Edgar, "Approach for determining a reliable set of spot frequencies to be used during a sweep frequency response analysis (SFRA) for power transformer diagnosis" (2008). Scopus Unisalle. 686.
https://ciencia.lasalle.edu.co/scopus_unisalle/686
Identifier
SCOPUS_ID:67650496565