Condition assessment of power transformers

The high cost and the critical nature of power transformers in power substations makes it is very important to prevent failures and detect problems as early as possible. This presentation reviews the diagnostic and monitoring tests and equipment available to assess the condition of transformers and provide an early warning of potential failure.

[1]  T. Leibfried,et al.  Online monitors keep transformers in service , 1998 .

[2]  W. Walter,et al.  On-line diagnostics of high-voltage bushings and current transformers using the sum current method , 2000 .

[3]  Hossein Borsi,et al.  Diagnostic methods for transformers on-site , 1998, Proceedings of 1998 International Symposium on Electrical Insulating Materials. 1998 Asian International Conference on Dielectrics and Electrical Insulation. 30th Symposium on Electrical Insulating Ma.

[4]  A.J. Vandermaar,et al.  Transformer winding movement monitoring in service - key factors affecting FRA measurements , 2004, IEEE Electrical Insulation Magazine.

[5]  A. J. Marques Cardoso,et al.  Condition monitoring and diagnostics of power transformers , 1998 .

[6]  R. Rogers IEEE and IEC Codes to Interpret Incipient Faults in Transformers, Using Gas in Oil Analysis , 1978, IEEE Transactions on Electrical Insulation.

[7]  Thomas Henry Crowley Automated diagnosis of large power transformers using adaptive model-based monitoring , 1990 .

[8]  Yan Zhang,et al.  Study on trend analysis method for on-line insulation diagnosing of capacitive-type equipment , 1998, Proceedings of 1998 International Symposium on Electrical Insulating Materials. 1998 Asian International Conference on Dielectrics and Electrical Insulation. 30th Symposium on Electrical Insulating Ma.

[9]  T. Leibfried Online monitoring of power transformers-system technology and data evaluation , 1999 .

[10]  A. Basak Condition monitoring of power transformers , 1999 .

[11]  E. Nemeth,et al.  Measuring voltage response: a non-destructive diagnostic test method of HV insulation , 1999 .

[12]  M. Waters,et al.  The short-circuit strength of power transformers , 1966 .

[13]  C. Bengtsson,et al.  Status and trends in transformer monitoring , 1996 .

[14]  C. K. Mechefske Correlation power transformer tank vibration characteristics to winding looseness , 1995 .

[15]  T. Leibfried,et al.  Monitoring of power transformers using the transfer function method , 1999 .

[16]  M.D. Judd,et al.  Partial discharge monitoring for power transformer using UHF sensors. Part 2: field experience , 2005, IEEE Electrical Insulation Magazine.

[17]  Yasuo Okazaki,et al.  Vibration analysis of a 3-phase model transformer core , 1997 .

[18]  A. Zargari,et al.  Application of optical fibre sensor for partial discharge detection in high-voltage power equipment , 1996, Proceedings of Conference on Electrical Insulation and Dielectric Phenomena - CEIDP '96.

[19]  L. Haydock,et al.  Swept frequency response test for condition monitoring of power transformer , 1995, Proceedings:Electrical Electronics Insulation Conference and Electrical Manufacturing & Coil Winding Conference.

[20]  M. Duval,et al.  Dissolved gas analysis: It can save your transformer , 1989, IEEE Electrical Insulation Magazine.

[21]  P. J. Griffin,et al.  Neural net and expert system diagnose transformer faults , 2000 .