Results 71 to 80 of about 449 (110)

Electrical Diagnosis Techniques for Power Transformers: A Comprehensive Review of Methods, Instrumentation, and Research Challenges. [PDF]

Sensors (Basel)
Mwinisin P, Mingotti A, Peretto L, Tinarelli R, Tefferi M.   +4 more
europepmc   +1 more source

Condition monitoring and fault diagnosis of power transformer based on non-invasive measurement. [PDF]

Sci Rep
Youssef M, El-Said Abdelaziz, Mohamed HS, Attia M.   +3 more
europepmc   +1 more source

Switching overvoltages in offshore wind power grids [PDF]

, 2011
Arana Aristi, Ivan
core  

Smart Monitoring of Power Transformers in Substation 4.0: Multi-Sensor Integration and Machine Learning Approach. [PDF]

Sensors (Basel)
Duz FHS, Zacarias TG, Ribeiro Junior RF, Steiner FM, Assuncao FO, Bonaldi EL, Borges-da-Silva LE.   +6 more
europepmc   +1 more source

Through-polymer, via technology-enabled, flexible, lightweight, and integrated devices for implantable neural probes. [PDF]

Microsyst Nanoeng
Zhou C, Tian Y, Li G, Ye Y, Gao L, Li J, Liu Z, Su H, Lu Y, Li M, Zhou Z, Wei X, Qin L, Tao TH, Sun L.   +14 more
europepmc   +1 more source

Testing and diagnostic out of the service power transformer using a sweep frequency response analysis (SFRA) comparing with China standard

Diagnostyka
Djeriou Salim, Riyadh Rouabhi, Ilies Ayad, Mohamed Bouchahdane, Mounir Dif   +4 more
openaire   +1 more source

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Investigating mechanical integrity in power transformer using sweep frequency response analysis (SFRA)

2017 IEEE International Conference on Electrical, Instrumentation and Communication Engineering (ICEICE), 2017
Sweep Frequency Response Analysis (SFRA) is a demonstrated control for investigating the mechanical integrity such as core and bulk winding deformations, open circuit and short circuit, radial and axial buckling etc. A change in frequency response as measured by SFRA technique indicates a good graphical interpretation can give the exact location of ...
Priti Gite, A. S. Sindekar
openaire   +1 more source

Using Cross-Correlation Coefficients to Analyze Transformer Sweep Frequency Response Analysis (SFRA) Traces

2007 IEEE Power Engineering Society Conference and Exposition in Africa - PowerAfrica, 2007
Sweep frequency response analysis (SFRA) is one of the most powerful diagnostic tools for assessing mechanical damage to a transformer winding. Analysis of the results, which are in the form of frequency response traces can, however, be daunting to new users. One approach is to attempt automated analysis, and this paper presents an approach using cross-
G.M. Kennedy, A.J. McGrail, J.A. Lapworth   +2 more
openaire   +1 more source

An Alternative Measurement Approach to Sweep Frequency Response Analysis (SFRA) for Power Transformers Fault Diagnosis

2019 54th International Universities Power Engineering Conference (UPEC), 2019
Power transformer failures can lead to power outages and significant financial loss, particularly at high voltage and medium voltage levels. Frequency response analysis (FRA) is used to diagnose transformer faults and particularly so for detecting mechanical displacements in windings and core.
Anurag A. Devadiga, Nouredine Harid, Huw Griffiths, Braham Barkat   +3 more
openaire   +1 more source

New methodology for diagnosing faults in power transformer windings through the Sweep Frequency Response Analysis (SFRA)

2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America, 2008
The sweep frequency response analysis (SFRA) is an analysis technique for detecting winding displacement and deformation (among other mechanical and electrical failures) in power and distribution transformers. SFRA as a diagnostic technique must integrate both off-line measurements and interpretation of the data in order to provide an assessment of the
J. Secue, E. Mombello
openaire   +1 more source