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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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INSULATION FAULT DIAGNOSIS IN HIGH VOLTAGE POWER TRANSFORMERS BY MEANS OF LEAKAGE FLUX ANALYSIS

By M. F. Cabanas, F. Pedrayes González, M. G. Melero, C. H. Rojas García, G. A. Orcajo, J. M. Cano Rodríguez, and J. G. Norniella

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Abstract:
Power transformers in service are subjected to a wide variety of electrical, mechanical and thermal stresses capable of producing insulation faults. This type of failure figures amongst the most costly faults in distribution networks since it produces both machine outage and electrical supply interruption. Major research effort has therefore focused on the early detection of faults in the insulating systems of large high voltage power transformers. Although several industrial methods exist for the on-line and off-line monitoring of power transformers, all of them are expensive and complex, and require the use of specific electronic instrumentation. For these reasons, this paper will present the On-Line analysis of transformer leakage flux as an efficient alternative for assessing machine integrity and detecting the presence of insulating failures during their earliest stages. An industrial 400 kVA-20 kV/400V transformer will be used for the experimental study. Very cheap, simple sensors, based on air core coils, will be used to measure the leakage flux of the transformer, and non-destructive tests will also be applied to the machine in order to analyse pre- and post-failure voltages induced in the coils.

Citation:
M. F. Cabanas, F. Pedrayes González, M. G. Melero, C. H. Rojas García, G. A. Orcajo, J. M. Cano Rodríguez, and J. G. Norniella, "Insulation Fault Diagnosis in High Voltage Power Transformers by Means of Leakage Flux Analysis," Progress In Electromagnetics Research, Vol. 114, 211-234, 2011.
doi:10.2528/PIER11010302
http://www.jpier.org/PIER/pier.php?paper=11010302

References:
1. Faghihi, F. and H. Heydari, "Reduction of leakage magnetic field in electromagnetic systems based on active shielding concept verified by eigenvalue analysis," Progress In Electromagnetics Research, Vol. 96, 217-236, 2009.
doi:10.2528/PIER09080506

2. Fang, C.-H., S. Zheng, H. Tan, D. Xie, and Q. Zhang, "Shielding effectiveness measurements on enclosures with various apertures by both mode-tuned reverberation chamber and gtem cell methodologies," Progress In Electromagnetics Research B, Vol. 2, 103-114, 2008.

3. Bahadorzadeh Ghandehari, M., M. Naser-Moghadasi, and A. R. Attari, "Improving of shielding effectiveness of a rectangular metallic enclosure with aperture by using extra wall," Progress In Electromagnetics Research Letters, Vol. 1, 45-50, 2008.
doi:10.2528/PIERL07110706

4. Lei, J.-Z., C. H. Liang, and Y. Zhang, "Study on shielding effectiveness of metallic cavities with apertures by combining parallel FDTD method with windowing technique," Progress In Electromagnetics Research, Vol. 74, 85-112, 2007.
doi:10.2528/PIER07041905

5. Atherton, D. L., "Magnetic inspection is key to ensuring safe pipelines," Oil & Gas Journal, Vol. 87, No. 32, 52-61, August 1989.

6. Yamada, S., M. Katou, M. Iwahara, and F. P. Dawson, "Eddy current testing probe composed of planar coils," IEEE Transactions on Magnetics, Vol. 31, No. 6, Part 1, 3185-3187, November 1995.

7. Mandal, K., D. Dufour, and D. L. Atherton, "Use of magnetic Barkhausen noise and magnetic flux leakage signals for analysis of defects in pipeline steel," IEEE Transactions on Magnetics, Vol. 35, No. 3, Part 2, 2007-2017, May 1999.

8. Yamada, S., H. Fujiki, M. Iwahara, S. C. Mukhopadhyay, and F. P. Dawson, "Investigation of printed wiring board testing by using planar coil type ECT probe," IEEE Transactions on Magnetics, Vol. 33, No. 5, Part 1, 3376-3378, September 1997.

9. Dogaru, T. and S. T. Smith, "Giant magnetoresistance-based eddy-current sensor," IEEE Transactions on Magnetics, Vol. 37, No. 5, Part 2, 3831-3838, September 2001.

10. Yamada, S., K. Chomsuwan, Y. Fukuda, M. Iwahara, H. Wakiwaka, and S. Shoji, "Eddy-current testing probe with spin-valve type GMR sensor for printed circuit board inspection," IEEE Transactions on Magnetics, Vol. 40, No. 4, Part 2, 2676-2678, July 2004.

11. Chomsuwan, K., S. Yamada, M. Iwahara, H. Wakiwaka, and S. Shoji, "Application of eddy-current testing technique for high-density double-layer printed circuit board inspection," IEEE Transactions on Magnetics, Vol. 41, No. 10, 3619-3621, October 2005.
doi:10.1109/TMAG.2005.855173

12. Jordan, H. and F. Taegen, "Wellenflusse infolge von Schwankungen des Luftspaltenwertes," Elektrotech. Z, Vol. 85, 865-867, 1964.

13. Erlicki, M. S., Y. Porat, and A. Alexandrovitz, "Leakage field changes of an induction motor as indication of nonsymmetric supply," IEEE Trans. Ind. Gen. Appl., Vol. 7, No. 6, 713-717, November/December 1971.
doi:10.1109/TIGA.1971.4181373

14. Cabanas, M. F., M. G. Melero, G. A. Orcajo, F. Rodríguez Faya, and J. Solares, "Experimental application of the axial leakage flux to the detection of rotor asymmetries, mechanical anomalies and interturn shortcircuits in working induction motors," Proc. of International Conference on Electrical Machines, ICEM'98, 420-425, Istanbul, 1998.

15. Penman, J., H. Sedding, B. Lloyd, and W. Fink, "Detection and location of interturn shortcircuits in the stator winding of operating motors," IEEE Trans. on Energy Conversion, Vol. 9, No. 4, December 1994.
doi:10.1109/60.368345

16. Vas, P., Parameter Estimation, Condition Monitoring and Diagnosis of Electrical Machines, Oxford University Press, 1993, ISBN 0-19-859375-9.

17. ANSI/IEEE, "IEEE guide for the interpretation of gases generated in oil-inmersed transformers,", IEEE Power Engineering Society, 1992.

18. IEC Publication 599, Interpretation of the Analysis of Gases in Transformers and Other Oil-filled Electrical Equipment in Service, 1 Ed., 1978.

19. Rogers, R. R., "IEEE and IEC Codes to interpret incipient faults in transformers using gas in oil analyis," IEEE Transactions on Electrical Insulation, Vol. 13, No. 5, 1978.
doi:10.1109/TEI.1978.298141

20. Yang, H.-T. and C.-C. Liao, "Adaptive fuzzy diagnosis system for dissolved gas analysis of power transformers," IEEE Transactions on Power Delivery, Vol. 14, No. 4, October 1999.

21. Kreuger, F. H., Partial Discharge Detection in High-voltage Equipment, Butterworths Ed., 1989, ISBN 0-408-02063-6.

22. Aschenbrenner, D., H. G. Kranz, W. R. Rutgers, and P. Van den Aardweg, "On-line PD measurements and diagnosis on power transformers," IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 12, No. 2, 216-221, April 2005.
doi:10.1109/TDEI.2005.1430392

23. Turley, M. F., "Los ensayos de tangente de delta en campo como herramienta para la evaluación del estado del aislamiento de equipos eléctricos de alta tensión," International Conference of Electrical Insulation (Jornadas Internacionales sobre aislamiento Eléctrico) Labein, IEEE Power Engineering Society, Spanish Chapter, Bilbao, September 1994.

24. Ward, B. H., "A survey of new techniques in insulation monitoring of power transformers," IEEE Electrical Insulation Magazin, Vol. 17, No. 3, 16-23, May/June 2001.
doi:10.1109/57.925299

25. Saha, T. K., "Review of modern diagnostic techniques for assessing insulation condition in aged transformers," IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 10, No. 5, 903-916, October 2003.
doi:10.1109/TDEI.2003.1237337

26. Van Bolhuis, J. P., E. Gushki, and J. J. Smith, "Monitoring and diagnostic of transformer solid insulation," IEEE Transactions on Power Deliver, Vol. 17, No. 2, 528-536, April 2002.
doi:10.1109/61.997930

27. Chapman, S. J., Electric Machinery Fundamentals, International Edition, Mc Graw Hill, 2003, ISBN 0-07-Y66160.

28. Reitz, J. R. and F. J. Milford, Foundations of Electromagnetic Theory, UTEHA, 2008, ISBN 84-274-0702.

29. Dormont, M. J., "Cálculo y Construcción de las Máquinas Eléctricas Estáticas,", Universidad Politécnica de Madrid --- Escuela Técnica Superior de Ingenieros Industriales, Sección de publicaciones.

30. Kong, J. A., Electromagnetic Wave Theory, 2 Ed., 364-371, Wiley, New York, 1990.

31. De Leon, F. and A. Semlyen, "Efficient calculation of elementary parameters of transformers," Transactions on Power Delivery, Vol. 7, No. 1, January 1992.

32. Kladas, A. G., M. P. Papadopoulos, and J. A. Tegopoulos, "Leakage flux and force calculation on power transformer windings under short-circuit: 2D and 3D models based on the theory of images and the finite element method compared to measurements," IEEE Transactions on Magnetics, Vol. 30, No. 5, September 1994.

33. Rodriguez, V. L., "Electromagnetismo,", Universidad Nacional de Educación a Distancia (UNED), 2002, ISBN: 84-362-4680-2.

34. Lecointe, J.-P., B. Cassoret, and J. F. Brudny, "Distinction of toothing and saturation effects on magnetic noise of induction motors," Progress In Electromagnetics Research, Vol. 112, 125-137, 2011.

35. Ravaud, R. and G. Lemarquand, "Magnetic field produced by a parallelepipedic magnet of various and uniform polarization," Progress In Electromagnetics Research, Vol. 98, 207-219, 2009.
doi:10.2528/PIER09091704

36. Ravaud, R. and G. Lemarquand, "Comparison of the coulombian and amperian current models for calculating the magnetic field produced by radially magnetized arc-shaped permanent magnets," Progress In Electromagnetics Research, Vol. 95, 309-327, 2009.
doi:10.2528/PIER09042105

37. Akyel, C., S. I. Babic, and M.-M. Mahmoudi, "Mutual inductance calculation for noncoaxial circular air coils with parallel axes," Progress In Electromagnetics Research, Vol. 91, 287-301, 2009.
doi:10.2528/PIER09021907

38. Jian, L. and K.-T. Chau, "Analytical calculation of magnetic field distribution in coaxial magnetic gears," Progress In Electromagnetics Research, Vol. 92, 1-16, 2009.
doi:10.2528/PIER09032301

39. Chen, J. and Q. H. Liu, "A non-spurious vector spectral element method for Maxwell's equations," Progress In Electromagnetics Research, Vol. 96, 205-215, 2009.
doi:10.2528/PIER09082705

40. Touati, S., R. Ibtiouen, O. Touhami, and A. Djerdir, "Experimental investigation and optimization of permanent magnet motor based on coupling boundary element method with permeances network," Progress In Electromagnetics Research, Vol. 111, 71-90, 2011.
doi:10.2528/PIER10092303

41. Torkaman, H. and E. Afjei, "FEM analysis of angular misalignment fault in SRM magnetostatic characteristics," Progress In Electromagnetics Research, Vol. 104, 31-48, 2010.
doi:10.2528/PIER10041406

42. Torkaman, H. and E. Afjei, "Hybrid method of obtaining degrees of freedom for radial airgap length in SRM under normal and faulty conditions based on magnetiostatic model," Progress In Electromagnetics Research, Vol. 100, 37-54, 2010.
doi:10.2528/PIER09111108

43. Torkaman, H. and E. Afjei, "Magnetio static field analysis regarding the e®ects of dynamic eccentricity in switched reluctance motor," Progress In Electromagnetics Research M, Vol. 8, 163-180, 2009.
doi:10.2528/PIERM09060205

44. Afjei, E. and H. Torkaman, "The novel two phase field-assisted hybrid SRG: Magnetio static field analysis, simulation, and experimental confirmation," Progress In Electromagnetics Research B, Vol. 18, 25-42, 2009.
doi:10.2528/PIERB09082404

45. Faiz, J. and B. M. Ebrahimi, "Mixed fault diagnosis in three-phase squirrel-cage induction motor using analysis of air-gap magnetic field," Progress In Electromagnetics Research, Vol. 64, 239-255, 2006.
doi:10.2528/PIER06080201

46. Faiz, J., B. M. Ebrahimi, and M. B. B. Sharifian, "Time stepping finite element analysis of broken bars fault in a three-phase squirrel-cage induction motor," Progress In Electromagnetics Research, Vol. 68, 53-70, 2007.
doi:10.2528/PIER06080903

47. Vaseghi, B., N. Takorabet, and F. Meibody-Tabar, "Transient finite element analysis of induction machines with stator winding turn fault," Progress In Electromagnetics Research, Vol. 95, 1-18, 2009.
doi:10.2528/PIER09052004

48. Cabanas, M. F., M. G. Melero, F. Pedrayes, C. H. Rojas, G. A. Orcajo, J. M. Cano, and J. G. Iglesias, "A new online method based on leakage flux analysis for the early detection and location of insulating failures in power transformers: Application to remote condition monitoring," EEE Transactions on Power Delivery, Vol. 22, No. 3, 2007.
doi:10.1109/TPWRD.2007.902430


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