Offline to Online Mechanical Deformation Diagnosis for Power Transformers
Internal winding deformations of power transformers can be detected using the conventional offline frequency response analysis (FRA) which is a well-known and widely accepted tool for the detection of winding and core deformations. In addition of being offline technique, interpretation of FRA signat...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
IEEE
2014
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/7260 |
| _version_ | 1848745318597787648 |
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| author | Hashemnia, Seyednaser Masoum, Mohammad Sherkat Abu-Siada, Ahmed Islam, Syed |
| author2 | M. A. S. Masoum |
| author_facet | M. A. S. Masoum Hashemnia, Seyednaser Masoum, Mohammad Sherkat Abu-Siada, Ahmed Islam, Syed |
| author_sort | Hashemnia, Seyednaser |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Internal winding deformations of power transformers can be detected using the conventional offline frequency response analysis (FRA) which is a well-known and widely accepted tool for the detection of winding and core deformations. In addition of being offline technique, interpretation of FRA signature is based on graphical analysis that requires skilled personnel as there is no reliable standard code for FRA signature identification and quantification. This paper presents the possibility of using an alternative online technique based on construction a voltage-current (ΔV-I) locus of the operating transformer and considering it as a reference signature. In order to fully explore the performance and reliability of the new proposed approach particularly for real-life distribution transformers, the paper investigates and compares the performance of the proposed and the FRA approaches for disk space variation and axial displacement faults. The transformer distributed parameter model is used to simulate FRA signatures while a detailed three-dimensional finite element model is used to generate the ΔV-I louses for healthy and faulty operating conditions. Simulation results are compared to highlight the advantages and limitations of the two internal fault detection strategies. |
| first_indexed | 2025-11-14T06:15:27Z |
| format | Conference Paper |
| id | curtin-20.500.11937-7260 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:15:27Z |
| publishDate | 2014 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-72602017-09-13T16:02:57Z Offline to Online Mechanical Deformation Diagnosis for Power Transformers Hashemnia, Seyednaser Masoum, Mohammad Sherkat Abu-Siada, Ahmed Islam, Syed M. A. S. Masoum power transformer V-I locus FRA finite-element Internal winding deformations of power transformers can be detected using the conventional offline frequency response analysis (FRA) which is a well-known and widely accepted tool for the detection of winding and core deformations. In addition of being offline technique, interpretation of FRA signature is based on graphical analysis that requires skilled personnel as there is no reliable standard code for FRA signature identification and quantification. This paper presents the possibility of using an alternative online technique based on construction a voltage-current (ΔV-I) locus of the operating transformer and considering it as a reference signature. In order to fully explore the performance and reliability of the new proposed approach particularly for real-life distribution transformers, the paper investigates and compares the performance of the proposed and the FRA approaches for disk space variation and axial displacement faults. The transformer distributed parameter model is used to simulate FRA signatures while a detailed three-dimensional finite element model is used to generate the ΔV-I louses for healthy and faulty operating conditions. Simulation results are compared to highlight the advantages and limitations of the two internal fault detection strategies. 2014 Conference Paper http://hdl.handle.net/20.500.11937/7260 10.1109/AUPEC.2014.6966530 IEEE restricted |
| spellingShingle | power transformer V-I locus FRA finite-element Hashemnia, Seyednaser Masoum, Mohammad Sherkat Abu-Siada, Ahmed Islam, Syed Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title | Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title_full | Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title_fullStr | Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title_full_unstemmed | Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title_short | Offline to Online Mechanical Deformation Diagnosis for Power Transformers |
| title_sort | offline to online mechanical deformation diagnosis for power transformers |
| topic | power transformer V-I locus FRA finite-element |
| url | http://hdl.handle.net/20.500.11937/7260 |