Decomposition of the hot-spot factor

IEEE Transactions on Power Delivery

Volumn 30, Issue 1, 2015, Pages 403-411

  Radaković, Zoran ^a   Radoman, Uroš ^a   Kostić, Predrag ^a  

^a University of Belgrade   (Serbia)

Author keywords

Hot spot; Loading; Oil power transformer; Thermal design; Thermal hydraulic network model

Indexed keywords

APPLICATION PROGRAMS; COMPLEX NETWORKS; LOADING; OIL SHALE; POWER TRANSFORMERS; WINDING;

FORCED COOLING; HOT SPOT; HOTSPOT TEMPERATURE; HYDRO POWER STATIONS; ON-SITE MEASUREMENT; THERMAL DESIGNS; THERMAL-HYDRAULIC NETWORKS; TRANSFORMER DESIGN;

OIL FILLED TRANSFORMERS;

EID: 85027920898     PISSN: 08858977     EISSN: None     Source Type: Journal    
DOI: 10.1109/TPWRD.2014.2352039     Document Type: Article

References (25)

1. P. S. Georgilakis, Spotlight on Modern Transformer Design. New York, USA: Springer, 2009.
2. Power Transformers - Part 2: Temperature Rise for Liquid-Immersed Transformers, IEC 60076-2 ed. 3.0, Feb. 2011.
3. Loading Guide for oil-Immersed Power Transformers, IEC 60076-7, Dec. 2005.
4. Z. Radakovic and M. Sorgic, "wirtschaftliche betrachtung der thermischen auslegung von ölgekühlten leistungstransformatoren," in Elektrizitätswirtschaft 107, 2008, pp. 32-38, Heft 15.
5. Z. Radakovic and M. Sorgic, "Basics of detailed thermal-hydraulic model for thermal design of oil power transformers," IEEE Trans. Power Del., vol. 25, no. 2, pp. 790-802, Apr. 2010.
6. M. Sorgic and Z. Radakovic, "Oil-forced versus oil-directed cooling of power transformers," IEEE Trans. Power Del., vol. 25, no. 4, pp. 2590-2598, Oct. 2010.
7. Z. Radakovic, M. Sorgic, W. V. d. Veken, and G.Claessens, "Ratings of oil power transformer in different cooling modes," IEEE Trans. Power Del. , vol. 27, no. 2, pp. 618-625, Apr. 2012.
8. M. Yamaguchi, T. Kumasaka, Y. Inui, and S. Ono, "Flow rate in a self cooled transformer," IEEE Trans. Power App. Syst., vol. PAS-100, no. 3, pp. 956-963, Mar. 1981.
9. W. V. d. Veken, J. Declercq, M. Baelmans, and S.V.Mileghem, "New perspectives to overloading with accurate modeling of thermal transient in oil-immersed power transformers," in Proc, IEEE/Power Eng. Soc. Transm. Distrib. Conf. Expo., 2001, vol. 1, pp. 147-152.
10. F. P. Incropera and D. P. DeWitt, Heat and Mass Transfer, 5th ed. Hoboken, NJ, USA: Wiley, 2002.
11. I. E. Idelchik, Handbook of Hydraulic Resistances. BocaRaton, FL, USA: CRC, 1994.
12. VDI-Gesellschaft Verfahrenstechnik und Chemieingenieurwesen (GVC). Berlin, Germany: Springer-Verlag, 1997, Auflage, VDI Wärmeatlas.
13. C. O. Olsson, "Prediction of nusselt number and flow rate of buoyancy driven flowbetween vertical parallel plates," J.Heat Transfer, vol. 126, no. 1, pp. 97-104, 2004.
14. A. Weinläder, W. Wu, S. Tenbohlen, and Z. Wang, "Prediction of the oil flow distribution in oil-immersed transformer windings by network modelling and computational fluid dynamics," IET Elect. Power Appl., vol. 6, no. 2, pp. 82-90, 2012.
15. C. Sang Moon and K. Joong-Kyoung, "Prediction and evaluation of the cooling performance of radiators used in oil-filled power transformer applications with non-direct and direct-oil-forced flow," Exp. Thermal Fluid Sci., vol. 44, pp. 392-397, 2013.
16. F. Torriano, M. Chaaban, and P. Picher, "Numerical study of parameters affecting the temperature distribution in a disc-type transformer winding," Appl. Thermal Eng. , vol. 30, pp. 2034-2044, 2010.
17. P. Picher, F. Torriano, M. Chaaban, S. Gravel, C. Rajotte, and B. Girard, "Optimization of transformer overload using advanced thermal modelling," in Proc. CIGRE Conf. , Paris, France, 2010, A2-305.
18. M. T. Villén, J. Letosa, A. Nogués, and R. Murillo, "Procedure to accelerate calculations of additional losses in transformer foil windings," Elect. Power Syst. Res., vol. 95, pp. 85-89, 2013.
19. S. V. Kulkarni and S. A. Khaparde, Transformer Engineering: Design, Technology, Diagnostics. Boca Raton, FL, USA: CRC, 2012.
20. CIGRE Working Group A2.38, "Transformer thermal modelling, working version of the brochure," internal document, to be published.
21. Z. Radakovic and A. Popovic, "Variation of steady-state thermal characteristics of transformers with OFWF cooling in service," Elect. Power Compon. Syst., vol. 31, no. 8, pp. 817-829, 2003.
22. T. R. Bott , Fouling of Heat Exchangers. New York, USA: Elsevier, 1995.
23. J. Turowski and A. Pelikant, "Eddy current losses and hot-spot evaluation in cover plates of power transformers," Proc, Inst. Elect. Eng. Elect. Power Appl., vol. 144, no. 6, pp. 435-440, 1997.
24. K. Dong-Hun, H. Song-Yop, and K. Sang-Young, "Improved design of cover plates of power transformers for lower eddy current losses," IEEE. Trans. Magn., vol. 35, no. 5, pp. 3529-3531, Sep. 1999.
25. E. Schmidt and P. Hamberger, "Design optimization of power transformers Part 2 - Eddy current analyses for tank wall and core clamping parts," in Proc. Int. Conf. Power Syst. Technol., Singapore, 2004, pp. 21-24.