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Frequency response analysis (FRA) is a well-known technique for detecting the mechanical defects inside a power transformer. There are different methods to interpret the FRA results, and one of them is using the numerical indices. Majority of the indices proposed in the literature use only the magnitude response of the FRA results. This paper, by contrast, proposes new methods to also include the...
Frequency Response Analysis (FRA) method proved to be very useful in detecting the mechanical deformations inside a power transformer. Several configurations are possible for FRA method and it is better to use the one with the best sensitivity to mechanical changes. In this paper, the effect of terminating resistors on the FRA traces is studied in order to find the most sensitive ones. The sensitivity...
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