Prediction and evaluation of the cooling performance of radiators used in oil-filled power transformer applications with non-direct and direct-oil-forced flow

Experimental Thermal and Fluid Science

Volumn 44, Issue , 2013, Pages 392-397

  Kim, Min Gu ^a   Cho, Sang Moon ^a   Kim, Joong Kyoung ^a  

^a Hyosung Co   (South Korea)

Author keywords

Cooling; Fluid flow; Oil insulation; Power transformer thermal factors; Power transformers

Indexed keywords

CFD SIMULATIONS; COOLING CAPACITY; COOLING MODE; COOLING PERFORMANCE; DESIGN OPTIMIZATION; EXPERIMENTAL STUDIES; INSULATION PERFORMANCE; MATERIALS DEGRADATION; MAXIMUM COOLING CAPACITY; OIL INSULATIONS; OPTIMAL COOLING; RADIATOR TEMPERATURE; THEORETICAL CALCULATIONS; THERMAL DAMAGE; THERMAL FACTORS; TRANSFORMER APPLICATIONS;

COMPUTATIONAL FLUID DYNAMICS; COOLING; FLOW OF FLUIDS; FORECASTING; OPTIMIZATION; RADIATORS; THERMAL INSULATION;

POWER TRANSFORMERS;

EID: 84869193652     PISSN: 08941777     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.expthermflusci.2012.07.011     Document Type: Article

References (21)

1. Sippola M., Sepponen R.E. Accurate prediction of high-frequency power-transformer losses and temperature rise. IEEE Trans. Power Electron. 2002, 17:835-847.
2. Power transformers Part 7: loading guide for oil-immersed power transformers, IEC Standard 60076-7, Ed. 1.0, 2005.
3. IEEE guide for loading mineral-oil-immersed transformer, IEEE Standards C57.91-1995, 1996.
4. Susa D., Palola J., Lehtonen M., Hyvarinen M. Temperature rises in an OFAF transformer at OFAN cooling mode in service. IEEE Trans. Power Del. 2005, 20:2517-2525.
5. Pierce L.W. Predicting liquid filled transformer-loading capability. IEEE Trans. Ind. Appl. 1994, 30:170-178.
6. Pierce L.W. An investigation of the thermal performance of an oil filled transformer winding. IEEE Trans. Power Del. 1992, 7:1347-1358.
7. Radakovic Z., Feser K. A new method for the calculation of the hot-spot temperature in power transformers with ONAN cooling. IEEE Trans. Power Del. 2003, 18:1284-1292.
8. Radakovic Z., Sorgic M. Basics of detailed thermal-hydraulic model for thermal design of oil power transformers. IEEE Trans. Power Del. 2010, 25:790-802.
9. Pivrnec M., Allen P.H.G., Havlicek K. Calculation of the forced, directed oil-circulation rate through a transformer cooling system. IEE Proc. Part C 1987, 134:306-312.
10. Hosseini R., Nourolahi M., Gharehpetian G.B. Determination of OD cooling system parameters based on thermal modeling of power transformer winding. Simul. Model. Pract. Th. 2008, 16:585-596.
11. Taghikhani M.A., Gholami A. Prediction of hottest spot temperature in power transformer windings with non-directed and directed oil-forced cooling. Int. J. Electr. Power. Energy Sys 2009, 31:356-364.
12. Tang W.H., Wu Q.H., Richardson Z.J. A simplified transformer thermal model based on thermal-electric analogy. IEEE Trans. Power Del. 2004, 19:1112-1119.
13. Susa D., Lehtonen M. Dynamic thermal modeling of power transformers: further development-Part II. IEEE Trans. Power Del. 2006, 21:1971-1980.
14. El Wakil N., Chereches N.-C., Padet J. Numerical study of heat transfer and fluid flow in a power transformer. Int. J. Therm. Sci. 2006, 45:615-626.
15. Torriano F., Chaaban M., Picher P. Numerical study of parameters affecting the temperature distribution in a disc-type transformer winding. Appl. Therm. Eng. 2010, 30:2034-2044.
16. Gastelurrutia J., Carlos Ramos J., Larraona G.S., Rivas A., Izagirre J., del Rio L. Numerical modelling of natural convection of oil inside distribution transformers. Appl. Therm. Eng. 2011, 31:493-505.
17. Churchill S.W., Chu H.H.S. Correlating equations for laminar and turbulent free convection from a vertical plate. Int. J. Heat Mass Tran. 1975, 18:1323.
18. Elenbaas W. Heat dissipation of parallel plates by free convection. Physica 1942, 9:1-28.
19. Bar-Cohen A., Rohsenow W.M. Thermally optimum spacing of vertical natural convection cooled, parallel plates. J. Heat Trans. 1984, 106:116.
20. Nabati Hamid, Mahmoudi Jafar, Ehteram Ali Heat transfer and fluid flow analysis of power transformer's cooling system using CFD approach. Chem. Prod. Process Model. 2009, 4:1934-2659.
21. Krastev R.K. Measuring of heat capacity. Int. J. Heat Mass Trans. 2010, 53:3847-3854.