Results 81 to 90 of about 449 (110)

Review of Sweep Frequency Response Analysis -SFRA for Assessment Winding Displacements and Deformation in Power Transformers

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, Enrique E Mombello, Carlos V. Cardoso   +2 more
openaire   +1 more source

Diagnostic techniques used in power transformer turn to turn faults identification based on Sweep Frequency Response Analysis (SFRA)

2016 Eighteenth International Middle East Power Systems Conference (MEPCON), 2016
Sweep Frequency Response Analysis (SFRA) is a technique which is recently used to detect the malfunction operation of electrical power transformers. This paper suggested three diagnostic techniques used to interpret SFRA for power transformer fault turn to turn identification.
Osama E. Gouda, Salah Hamdy El-Hoshy, Saber M. Saleh   +2 more
openaire   +1 more source

Approach for determining a reliable set of spot frequencies to be used during a Sweep Frequency Response Analysis (SFRA) for power transformer diagnosis

2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, 2008
The measurement of the frequency response on power and distribution transformers is a diagnostic test technique for detecting winding displacement and deformation (among other mechanical and electrical failures), which are among the most important causes of mechanical failure in transformers. There are two different methods to carry out the measurement
J. Secue, E. Mombello, E. Muela
openaire   +1 more source

Detecting ground faults in synchronous machines using sweep-frequency-response-analysis (SFRA)

IET Conference Proceedings, 2023
Lukas Ranzinger, Stephanie Uhrig, Stefan Tenbohlen, Tobias Rieder   +3 more
openaire   +1 more source

Review for "Normograms preparation and interpretation for 400/ 800 kV class of converter transformers/reactors with and without oil using sweep frequency response analysis ( SFRA )"

2020
  +5 more sources

Preparation of tuna skin collagen-chitosan composite film improved by sweep frequency pulsed ultrasound technology

Ultrasonics Sonochemistry, 2022
Wenjuan Qu, Bo Wang
exaly  

Effect of sweep frequency ultrasound and fixed frequency ultrasound thawing on gelling properties of myofibrillar protein from quick-frozen small yellow croaker and its possible mechanisms

LWT - Food Science and Technology, 2021
Jing-Kun Yan, Haile
exaly  

Author response for "Normograms preparation and interpretation for 400/ 800 kV class of converter transformers/reactors with and without oil using sweep frequency response analysis ( SFRA )"

2020
null Harish K. Sharma, null Savita Nema, null R. K. Nema   +2 more
openaire   +1 more source

Decision letter for "Normograms preparation and interpretation for 400/ 800 kV class of converter transformers/reactors with and without oil using sweep frequency response analysis ( SFRA )"

2020
  +4 more sources

Sweep Frequency Response Analysis (SFRA) as a diagnostic tool to detect core & LV “V” phase winding short and Core & HV “V” phase winding short faults which are practically simulated separately on 10 KVA power transformer

International Conference on Recent Advances and Innovations in Engineering (ICRAIE-2014), 2014
Akshay A. Pandya, B. R. Parekh
openaire   +1 more source