Bubble effect as a consequence of dielectric losses in cellulose insulation

IEEE Transactions on Dielectrics and Electrical Insulation

Volumn 17, Issue 3, 2010, Pages 913-919

  Przybylek, Piotr ^a   Nadolny, Zbigniew ^a   Moscicka Grzesiak, Hanna ^a  

^a POZNAN UNIVERSITY OF TECHNOLOGY   (Poland)

Author keywords

Aging; Bubbles; Dielectric losses; Moisture; Power transformer insulation; Temperature

Indexed keywords

AGING; CELLULOSE INSULATION; CELLULOSE POLYMERIZATION; ELECTRIC FIELD INTENSITIES; PAPER INSULATION; PAPER SAMPLES; POWER TRANSFORMER INSULATION; TEMPERATURE INCREASE; WATER RELEASE;

CELLULOSE; DIELECTRIC DEVICES; ELECTRIC FIELDS; ELECTRIC INSULATION; INSULATING MATERIALS; MOISTURE; POLYMERIZATION; POWER TRANSFORMERS; THERMAL INSULATION; TRANSFORMER SUBSTATIONS;

DIELECTRIC LOSSES;

AGING; BUBBLES; CELLULOSE; DIELECTRICS; ELECTRIC FIELDS; ELECTRIC INSULATION; MOISTURE; POLYMERIZATION; POWER FACTOR; THERMAL ANALYSIS; THERMAL INSULATION; TRANSFORMERS;

EID: 77954191140     PISSN: 10709878     EISSN: None     Source Type: Journal    
DOI: 10.1109/TDEI.2010.5492266     Document Type: Article

References (14)

1. H.P. Moser and V. Dahinden, Transformerboard II, Weidmann AG, Rapperswil, 1987.
2. D.H. Shroff and A.W. Stannett, "A review of paper aging in power transformers", IEE Proc., Vol.132, Pt. C, No.6, pp. 312 - 319, 1985.
3. A.J. Kachler and I. Höhlein, "Aging of cellulose at transformer service temperatures. Part 2: Influence of moisture and temperature on degree of polymerization and formation of furanic compounds in free-breathing systems", IEEE Electr. Insul. Mag., Vol.21, No.5, pp. 21 - 24, 2005
4. A.M. Emsley, X. Xiao, R.J. Heywood and M. Ali, "Degradation of cellulosic insulation in power transformers. Part 3: Effects of oxygen and water on aging in oil", IEE Proc. Sci. Measur. Techn., Vol.147, pp. 115 - 119, 2000.
5. L.E. Lungaard, W. Hansen, D. Linhjell and T.J. Painter, "Aging of oilimpregnated paper in power transformers", IEEE Trans. Power Delivery, Vol.19, pp. 230 - 239, 2004.
6. A.M. Emsley and G.C. Stevens, "Review of chemical indicators of degradation of cellulosic electrical paper insulation in oil-filled transformer", IEE Proc.-Sci. Meas. Technol., Vol.141, pp. 324 - 334, 1994.
7. S. Levchik, J. Scheirs, G. Camino, W. Tumiatti and M. Avidano, "Depolymerization processes in the thermal degradation of cellulosic paper insulation in electrical transformers", Polymer Degradation and Stability, Vol.61, pp. 507 - 511, 1998. (Pubitemid 128400748)
8. T.V. Oommen, T.A. Prevost, "Cellulose insulation in oil-filled power transformers: Part II - Maintaining insulation integrity and life", IEEE Electr. Insul. Mag., Vol.22, No.2, pp. 5 - 14, 2006.
9. A.J. Kachler and I. Höhlein, "Aging of cellulose at transformer service temperatures. Part 1: Influence of type of oil and air on the degree of polymerization of pressboard, dissolved gasses, and furanic compounds in oil", IEEE Electr. Insul. Mag., Vol.21, No.2, pp. 15 - 21, 2005. (Pubitemid 40556197)
10. Cigré Brochure 323, "Aging of cellulose in mineral-oil insulated transformers", 2007.
11. T.V. Oommen and S.R. Lindgren, "Bubble evolution from transformer overload", IEEE/PES Transmission and Distribution Conf. and Exposition, Vol.1, pp. 137 - 142, 2001.
12. P. Przybylek, "Reliability of Physicochemical Methods of Water Content Estimation in Oil-paper Insulation in Aspect of Transformer Breakdown Risk Caused by Thermal Effect", doctoral dissertation, Poznan University of Technology, Poland, 2007 (in Polish).
13. T.A.G. Zurych, "Schutzringkondensatoren typen 2903 und 2904", Fabrikation Elektrischer Präzisions-Messgeräte (in German).
14. IEEE Std C57.91-1995, "IEEE Guide for Loading Mineral-Oil- Immersed Transformers".