Experience with return voltage measurements for assessing insulation conditions in service-aged transformers

IEEE Transactions on Power Delivery

Volumn 18, Issue 1, 2003, Pages 128-135

  Saha, Tapan Kumar ^a   Yao, Zheng Tong ^a  

^a UNIVERSITY OF QUEENSLAND   (Australia)

Author keywords

Condition monitoring; Dielectric measurement; Insulation aging; Insulation life; Molecular weight; Polarization; Power transformer; Transformer insulation

Indexed keywords

AGING OF MATERIALS; CONDITION MONITORING; DIELECTRIC MATERIALS; ELECTRIC INSULATION; ELECTRIC TRANSFORMERS; MOISTURE; MOLECULAR WEIGHT; POLARIZATION;

SERVICE-AGED TRANSFORMERS;

ELECTRIC POTENTIAL;

EID: 0037250619     PISSN: 08858977     EISSN: None     Source Type: Journal    
DOI: 10.1109/TPWRD.2002.803722     Document Type: Article

References (13)

1. M. Darveniza, T. K. Saha, D. J. T. Hill, and T. T. Le, "Investigation into effective methods for assessing the condition of insulation in aged power transformers," IEEE Trans. Power Delivery, vol. 13, pp. 1214-1223, Oct. 1998.
2. Y. Du, B. C. L. Zahn, A. V. Mamishev, and S. R. Lindgren, "Moisture equilibrium in transformer paper-oil systems," IEEE Electr. Insul. Mag., vol. 15, no. 1, Jan./Feb. 1999.
3. D. J. T. Hill, T. Le, M. Darveniza, and T. K. Saha, "A study of degradation of cellulosic insulation materials in a power transformer-Part 1: Molecular weight study of cellulose insulation paper," Polymer Degradation Stability, vol. 48, no. 1, pp. 79-87, 1995.
4. _, "A study of degradation of cellulosic insulation materials in a power transformer-Part 2: Tensile strength of cellulose insulation paper," Polymer Degradation Stability, vol. 49, no. 3, pp. 429-435, 1995.
5. T. K. Saha, Z. T. Yao, T. Le, M. Darveniza, and D. Z. T. Hill, "Investigation of interfacial polarization parameters for accelerated aged oil-paper insulation samples and its correlation with molecular weights and furan compounds." in Proc. CIGRE Session, Paris, France, Aug. 27-Sept. 2, 2000, Paper 15-201.
6. T. K. Saha, M. Darveniza, D. J. T. Hill, and T. T. Le, "Electrical & chemical diagnostics of transformers insulation, Part B: Accelerated aged insulation samples," IEEE Trans. Power Delivery, vol. 12, pp. 1555-1561, Oct. 1997.
7. _, "Electrical & chemical diagnostics of transformers insulation, Part A: Aged transformers samples," IEEE Trans. Power Delivery, vol. 12, pp. 1547-1554, Oct. 1997.
8. T. K. Saha, M. Darveniza, D. J. T. Hill, Z. T. Yao, and G. Yeung, "Investigating the effects of oxidation and thermal degradation on electrical and chemical properties of power transformers insulation," IEEE Trans. Power Delivery, vol. 14, pp. 1359-1367, Oct. 1999.
9. D. H. Shroff and A. W. Stannett, "A review of paper aging in power transformers," Proc. Inst. Elect. Eng. C, vol. 132, no. 6, pp. 312-319, Nov. 1985.
10. J. Unsworth and F. Mitchell, "Degradation of electrical insulation paper monitored using high performance liquid chromatography," in Proc. 2nd Int. Conf. Properties Applications Dielectric Mater., Beijing, China, Sept. 12-16, 1988, pp. 337-340.
11. A. Bognar et al., "Diagnostic tests of high voltage oil-paper insulating systems (in particular transformer insulation) using DC dielectrometrics," in CIGRE Session, Paper 15/33-08.
12. U. Gafvert et al., "Modeling of dielectric measurements on power transformers," in Proc. CIGRE Session, Paris, France, Aug. 30-Sept. 5, 1998, Paper 15-103.
13. A. K. Jonscher, Dielectric Relaxation in Solids. New York: Chelsea Dielectrics, 1984.