Prediction of hottest spot temperature in power transformer windings with non-directed and directed oil-forced cooling

International Journal of Electrical Power and Energy Systems

Volumn 31, Issue 7-8, 2009, Pages 356-364

  Taghikhani, M A ^a   Gholami, A ^a  

^a IRAN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Iran)

Author keywords

Forced cooling; Heat equation; Hottest spot; Power transformer; Temperature distribution

Indexed keywords

AMBIENT TEMPERATURES; CLASSICAL APPROACH; ECONOMIC IMPACTS; ELECTRICAL NETWORKS; EXPERIMENTAL TEST; FINITE INTEGRAL TRANSFORM; FORCED COOLING; HEAT CONDUCTION EQUATIONS; HEAT EQUATION; HEAT TRANSFER THEORY; HOTTEST SPOT; LIFE EXPECTANCIES; TOP OIL TEMPERATURE;

COOLING; ELECTRIC INSTRUMENT TRANSFORMERS; INTEGRAL EQUATIONS; POWER TRANSFORMERS; TEMPERATURE DISTRIBUTION; THERMOANALYSIS; TRANSFORMER SUBSTATIONS; TRANSFORMER WINDINGS;

OIL FILLED TRANSFORMERS;

EID: 67650578616     PISSN: 01420615     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijepes.2009.03.009     Document Type: Article

References (18)

1. Pierce L.W. Predicting liquid filled transformer-loading capability. IEEE Trans Ind Appl 30 1 (1994) 170-178
2. IEC Standard, IEC60076-7. Loading guide for oil-immersed transformers; 2006.
3. IEEE Standards, C57.91-1995. IEEE guide for loading mineral-oil-immersed transformer, vols. 18-19; 1996. p. 46-53.
4. IEEE Standards, 1538-2000. IEEE guide for determination of maximum winding temperature rise in liquid-filled transformers; 2000.
5. Radakovic Z. Numerical determination of characteristic temperatures in directly loaded power oil transformer. Eur Trans Electr Power 13 1 (2003) 47-54
6. Radakovic Z., and Kalic D.J. Results of a novel algorithm for the calculation of the characteristic temperatures in power oil transformers. Electr Eng 80 3 (1997) 205-214
7. Swift G., Molinski T., Lehn W., and Bray R. A fundamental approach to transformer thermal modeling - Part I: theory and equivalent circuit. IEEE Trans Power Deliv 16 2 (2001) 171-175
8. Tang W.H., Wu O.H., and Richardson Z.J. Equivalent heat circuit based power transformer thermal model. IEEE Proc Electr Power Appl 149 (2002) 2
9. Pierce L.W. An investigation of the thermal performance of an oil filled transformer winding. IEEE Trans Power Deliv 7 3 (1992) 1347-1358
10. Pradhan M.K., and Ramu T.S. Prediction of hottest spot temperature (HST) in power and station transformers. IEEE Trans Power Deliv 18 4 (2003) 1275-1283
11. Ryder S.A. A simple method for calculating winding temperature gradient in power transformers. IEEE Trans Power Deliv 17 4 (2002) 977-982
12. Swift G., Molinski T.S., Bray R., and Menzies R. A fundamental approach to transformer thermal modeling - Part II: field verification. IEEE Trans Power Deliv 16 2 (2001) 176-180
13. Radakovic Z., and Feser K. A new method for the calculation of the hot-spot temperature in power transformers with ONAN cooling. IEEE Trans Power Deliv 18 4 (2003) 1-9
14. Reddy A.S., and Vijaykumar M. Hottest spot and life evaluation of power transformer design using finite element method. J Theor Appl Inform Technol 4 3 (2008) 238-243
15. Faiz J., Sharifian M.B.B., and Fakhri A. Two-dimensional finite element thermal modeling of an oil-immersed transformer. Eur Trans Electr Power 18 6 (2007) 577-594
16. Firouzifar S, Mahmoudi J. Assessment of power transformer cooler with FEMLAB. In: Proceedings of the 48th Scandinavian conference on simulation and modeling (SIMS 2007), 30-31 October. Göteborg (Särö), Sweden; 2007.
17. Mousavi Takami K., and Mahmoudi J. Numerical modeling of heat generation and distribution in the core and winding of power transformers. Int J Emer Electr Power Syst 9 2 (2008) [Article 7]
18. Incropera F.P., and DeWitt D.P. Fundamentals of heat and mass transfer. 4th ed. (1996), J. Wiley and Sons, New York