Title :
Transformer Diagnostic Testing by Frequuency Response Analysis
Author :
Dick, E.P. ; Erven, C.C.
Author_Institution :
Ontario Hydro
Abstract :
Winding deformation in power transformers can be measured externally using a new frequency response analysis (FRA) method Field experience since 1975, on five separate transformers up to 550 MVA rating, 230kVclassindicatesthatthismethod hasadvantagesover the low voltage impulse (LVI) method as a practical maintenance tool. Results on suspect transformers indicate that benchmark reference data is not always necessary to identify certain kinds of mechanical damage.
Keywords :
Capacitance; Circuit testing; Frequency measurement; Frequency response; Instruments; Insulators; Low voltage; Power measurement; Power transformers; US Department of Transportation;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1978.354718
