Analysis of the influence of low-frequency heating on transformer drying - Part 1: Theoretical analysis

International Journal of Electrical Power and Energy Systems

Volumn 38, Issue 1, 2012, Pages 84-89

  García, Diego F ^a   García, Belén ^a   Burgos, Juan Carlos ^a  

^a UNIVERSIDAD CARLOS III DE MADRID   (Spain)

Author keywords

Field drying; Hot oil drying; Low frequency heating; Power transformer; Transformer insulation; Vacuum drying

Indexed keywords

DRYING; HEATING; OIL FILLED TRANSFORMERS; POWER TRANSFORMERS;

DRYING METHODS; DRYING PROCESS; EXPERIMENTAL TEST; HOT OIL; LOW-FREQUENCY; TRANSFORMER INSULATION; UNEXPECTED FAILURES; VACUUM DRYING;

ELECTRIC TRANSFORMER TESTING;

EID: 84862025354     PISSN: 01420615     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijepes.2011.12.024     Document Type: Article

References (11)

1. Cigre WG A2.18. Guide for life management techniques for power transformers; January, 2003.
2. Bosiger J. The use of low frequency heating techniques in the insulation drying process for liquid filled small power transformers. In: Transmission and distribution conference and exposition IEEE/PES, vol 2. 2001. p. 688-92. (Pubitemid 34064060)
3. Koestinger P, Bruaroy TM. Drying of power transformers in the field. Applying the LHF-technology in combination with reclamation. Cigré; 2006.
4. Koestinger P, Aronsen E, Boss P, Rindlisbacher G. Practical experience with the drying of power transformers in the field, applying the LFH technology. Cigré; 2004.
5. Figueroa E, Kalicki T. Low frequency heating field dry out of a 750 MVA 500 kV autotransformer. Electricity today; January-February, 2009.
6. Oommen TV. Moisture equilibrium in paper-oil insulation systems. In: Electrical and electronics insulation conference. IEEE; 1983. p. 162-6. (Pubitemid 14458577)
7. Almendros JA, Burgos JC, García B. Transformer field drying procedures: a theoretical analysis. IEEE Trans Power Deliv 2009;24(4):1978-86.
8. Guidi WW, Fullerton HP. Mathematical methods for prediction of moisture take-up and removal in large power transformers. In: Proceedings of IEEE winter power meeting. IEEE/PES; 1974.
9. Foss SD, Savio L. Mathematical and experimental analysis of the field drying of power transformer insulation. IEEE Trans Power Deliv 1993.
10. IEEE Std 62-1995. Guide for diagnostic field testing of electric power apparatus - part 1: oil filled power transformers, regulators, and reactors; August, 1995.
11. Jeffries R. The sorption of water by cellulose and eight other textile polymers. J Textile Inst 1960;51(9):339-74.