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Frequency Response Analysis (FRA) has been in use since the last decade as a sensitive method in transformer internal defect recognition. This study has concentrated on the influence of transformer winding dry-out process on FRA spectrum. A single phase glassy model transformer involving concentric LV and HV windings is fabricated and taken as a test object. FRA traces for HV and LV windings of the...
Frequency Response Analysis (FRA) has been operated since last decade as a sensitive method in transformer internal defect recognition. This study has concentrated on influence of temperature variation of the transformer winding on FRA trace. An oil-free single phase model transformer involving concentric LV and HV windings is taken as a test object. The test object temperature is changed widely from...
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