Results 181 to 190 of about 350,104 (214)
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Effects of terminal connections on sweep frequency response analysis of transformers
IEEE Electrical Insulation Magazine, 2012Many problems can arise in power transformers, beginning from the moment they arrive at the sites where they are to be installed [1], [2]. Sweep frequency response analysis (SFRA) is used by many industries and manufacturers to assess the mechanical integrity of the core, winding, and clamping structure of power transformers.
Esam Al Murawwi +2 more
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On site oil test for a transformer using sweep frequency response analysis
8th International Conference on Electrical and Computer Engineering, 2014Oil filled transformers are widely used to step up or step down voltages in power transmission and distribution systems. A periodic maintenance of the transformers includes checking oil level, chemical analysis and dielectric strength (break down voltage) test taking oil sample and sending it to laboratory.
Al-Amin Ahmed Simon +3 more
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Novel method for detection of transformer winding faults using Sweep Frequency Response Analysis
2007 IEEE Power Engineering Society General Meeting, 2007Sweep frequency response analysis (SFRA) is an established tool for determining the core deformations, bulk winding movement relative to each other, open circuits and short circuit turns, residual magnetism, deformation within the main transformer winding, axial shift of winding etc. This test is carried out on the transformer without actual opening it
Jashandeep Singh +3 more
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Study and diagnosis the failure of power transformers by sweep frequency response analysis
2013 International Conference on Power, Energy and Control (ICPEC), 2013Sweep Frequency Response Analysis (SFRA) testing has become a valuable tool for verifying the geometric integrity of electrical apparatus, specially transformers. The SFRA technique provides internal diagnostic information using non-intrusive procedure.
A. K. Mehta +3 more
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IEEE Latin America Transactions, 2007
The Sweep Frequency Response Analysis SFRA is a diagnostic technique for detecting winding displacement and deformation (among other mechanical and electrical failures) on power and distribution transformer in which the diagnosis relies on experts' knowledge.
Janneth Rocio Secue +2 more
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The Sweep Frequency Response Analysis SFRA is a diagnostic technique for detecting winding displacement and deformation (among other mechanical and electrical failures) on power and distribution transformer in which the diagnosis relies on experts' knowledge.
Janneth Rocio Secue +2 more
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IEEE PES T&D 2010, 2010
In order to further recognize the relationship between the fault of winding deformation of power transformer with the measured tank vibration, the short-circuit test is done in a 220kV transformer. The vibration sweep frequency response curves for some pre-setting winding deformation fault are obtained by virtue of the vibration measurement system ...
F. H. Wang, J. Xu, Z. J. Jin, S. S. Gui
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In order to further recognize the relationship between the fault of winding deformation of power transformer with the measured tank vibration, the short-circuit test is done in a 220kV transformer. The vibration sweep frequency response curves for some pre-setting winding deformation fault are obtained by virtue of the vibration measurement system ...
F. H. Wang, J. Xu, Z. J. Jin, S. S. Gui
openaire +1 more source
23rd International Symposium on High Voltage Engineering (ISH 2023), 2023
Lukas Ranzinger +2 more
semanticscholar +1 more source
Lukas Ranzinger +2 more
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Detecting ground faults in synchronous machines using sweep-frequency-response-analysis (SFRA)
IET Conference Proceedings, 2023Lukas Ranzinger +3 more
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