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Transactions: WSEAS TRANSACTIONS ON POWER SYSTEMS
Transactions ID Number: 32-682
Full Name: Jalal Abdallah
Position: Associate Professor
Age: ON
Sex: Male
Address: P.O. Box 851229 -code 11185 Swaifia
Country: JORDAN
Tel: 00962-777-499449
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E-mail address: jalal_abdallah@hotmail.com
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Title of the Paper: using the frequency response analysis in transformers internal fault detection
Authors as they appear in the Paper: Jalal Abdallah
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Number of paper pages: 10
Abstract: Abstract: This paper deals with diagnostic methods of the internal faults in power transformers. The diagnostic process uses some of the current diagnosis methods (e.g. oil test, dissolved gases analysis (DGA), partial discharge (PD), etc.) to determine the condition of the transformer. In this process, the most frequent diagnostic methods were listed and applied practically to be compared. A conventional faulty oil-immersed transformer 400 V / 10 kV, 100 kVA was diagnosed and tested with different methods. The parameters and results were compared with a normal working transformer with the same parameters and age. After that an opening of the transformer was performed to approve and to make a visual verification of the diagnostic methods and the used devices. Among the applied methods, the frequency response analysis FRA reflects the real situation of the internal faults such as short circuits, mechanical displacement and deformation of the transformer windings.
Keywords: Transformer Fault Diagnosis, Case Study, Frequency Response Analysis (FRA), Polarization and Depolarization Current (PDC).
EXTENSION of the file: .doc
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