Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Mehran Tahir"'
Autor:
Mehran Tahir, Stefan Tenbohlen
Publikováno v:
Energies, Vol 16, Iss 9, p 3714 (2023)
At present, the condition assessment of transformer winding based on frequency response analysis (FRA) measurements demands skilled personnel. Despite many research efforts in the last decade, there is still no definitive methodology for the interpre
Externí odkaz:
https://doaj.org/article/93a5dec01d6e45a4bad8eb1aada20334
Autor:
Mehran Tahir, Stefan Tenbohlen
Publikováno v:
Energies, Vol 14, Iss 11, p 3227 (2021)
Frequency response analysis (FRA) is a well-known method to assess the mechanical integrity of the active parts of the power transformer. The measurement procedures of FRA are standardized as described in the IEEE and IEC standards. However, the inte
Externí odkaz:
https://doaj.org/article/bab3c2248d2e44089be19d6799a81ca1
Autor:
Mehran Tahir, Stefan Tenbohlen
Publikováno v:
Energies, Vol 13, Iss 1, p 105 (2019)
The measurement procedures for frequency response analysis (FRA) of power transformers are well documented in IEC and IEEE standards. However, the interpretation of FRA results is still far from reaching an accepted methodology and is limited to the
Externí odkaz:
https://doaj.org/article/e5fa80d3708548d789746d7378e7356c
Publikováno v:
IEEE Transactions on Power Delivery. 36:618-626
Frequency response analysis (FRA) is a widely accepted diagnostic method to assess the mechanical integrity of the active parts within a power transformer. Recent studies in the field of FRA have led to the standardization of its measurement procedur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89dca3970fab71d68501a617e791d048
https://doi.org/10.1109/tpwrd.2020.2987205
https://doi.org/10.1109/tpwrd.2020.2987205
Autor:
Mehran Tahir, Stefan Tenbohlen
Publikováno v:
IET Electric Power Applications. 14:2370-2377
Frequency response analysis (FRA) has gained attention as a reliable diagnostic tool, to assess the mechanical integrity of power transformers, due to standardised FRA measurement methods. However, the assessment of FRA results is still a challenge a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8d853f399613061664fac5cac8f1793
https://doi.org/10.1049/iet-epa.2020.0273
https://doi.org/10.1049/iet-epa.2020.0273
Publikováno v:
IET Generation, Transmission & Distribution. 13:3493-3500
Transfer functions of a transformer whose winding is axially displaced are measured in several connection schemes of frequency response analysis (FRA), and the sensitivities of the measured transfer functions in these connection schemes to the axial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eac4f8b1787a15bb8b2e9bcd40a9a733
https://doi.org/10.1049/iet-gtd.2018.6032
https://doi.org/10.1049/iet-gtd.2018.6032
Publikováno v:
IEEE Electrical Insulation Magazine. 35:27-33
Good repeatability of measurements of frequency response analysis (FRA) on power transformers can only be secured when selecting the same connection method of the used measuring leads as that employed in the measurement of reference data.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50dc3655272f0e1a7fd2e24fbc96b9ee
https://doi.org/10.1109/mei.2019.8636103
https://doi.org/10.1109/mei.2019.8636103
Autor:
Stefan Tenbohlen, Mehran Tahir
Publikováno v:
Energies, Vol 13, Iss 1, p 105 (2019)
Energies; Volume 13; Issue 1; Pages: 105
Energies; Volume 13; Issue 1; Pages: 105
The measurement procedures for frequency response analysis (FRA) of power transformers are well documented in IEC and IEEE standards. However, the interpretation of FRA results is still far from reaching an accepted methodology and is limited to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6269fbbe4fbe4992da8b6323780e15d
https://www.mdpi.com/1996-1073/13/1/105
https://www.mdpi.com/1996-1073/13/1/105
Publikováno v:
Lecture Notes in Electrical Engineering ISBN: 9783030316754
For assessing the mechanical integrity of power transformers using the well-known frequency response analysis (FRA) method, proper interpretation of FRA results is crucial. In spite of many research efforts in developing a systematic interpretation m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf5de8261c46266467144a49e5567140
https://doi.org/10.1007/978-3-030-31676-1_76
https://doi.org/10.1007/978-3-030-31676-1_76
Publikováno v:
2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE).
Axial displacement of winding is one of the most severe mechanical faults of power-transformer windings because it may result in an increase of mechanical force generated when high short-circuit current flows into the winding. Frequency response anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6293ab6b95210e5c99ef8ca51142b0bb
https://doi.org/10.1109/ichve.2018.8641997
https://doi.org/10.1109/ichve.2018.8641997