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- W2029307144 abstract "The Frequency Response Analysis (FRA) is considered as an useful measure to detect deformation and changes of the active part of transformers. However, the corresponding interpretation is still subject of different investigation as there are many questions to be answered. One type of interpretation is based on waveform and statistical analyses, which is not fully efficient for all circumstances in reality. Recently there have been several researches mentioning another kind of interpretation that is based on equivalent electrical parameters of transformers extracted from measurements, but the problem is that there is a lack of “physical” verification for these parameters. Without such verification, they may be only valid in a certain context. To illustrate an example in which extracted parameters from FRA measurements are verified through other tests so that these parameters can be used for interpretation in all context, this paper introduces a method for extracting frequency responses of electrical parameters of a test transformer from FRA tests and their verifications through terminal/diagnostic tests performed by means of an universal testing device and a terminal testing set at low frequencies. Results shows that the extraction method can be applied to determine physical parameters of power transformers in such frequency range and these parameters are ready after verification as input sets for any machine-learning-based algorithm for the purpose of transformer failure diagnosis. The paper also belongs to a series of research tasks which deal with the issue of automatic and intelligent interpretation of FRA tests for power transformers." @default.
- W2029307144 created "2016-06-24" @default.
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- W2029307144 date "2012-09-01" @default.
- W2029307144 modified "2023-10-17" @default.
- W2029307144 title "FRA-based transformer parameters at low frequencies" @default.
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- W2029307144 doi "https://doi.org/10.1109/ichve.2012.6357083" @default.
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