Understanding power transformer frequency response analysis signatures
This paper presents a comprehensive analysis of the effects of various faults on the FRA signatures of a transformer simulated by a high-frequency model. The faults were simulated through changes in the values of some of the electrical components in the model. It was found that radial displacement o...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
IEEE Dielectrics and Electrical Insulation Society
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/24178 |
| Summary: | This paper presents a comprehensive analysis of the effects of various faults on the FRA signatures of a transformer simulated by a high-frequency model. The faults were simulated through changes in the values of some of the electrical components in the model. It was found that radial displacement of a winding alters the FRA signature over the entire frequency range (10 Hz-1 MHz), whereas changes due to axial displacement occur only at frequencies above 200 kHz. A Table listing various transformer faults and the associated changes in the FRA signature was compiled and could be used in the formulation of standard codes for power transformer FRA signature interpretation. |
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