Degradation behavior of epoxy in stator insulation of large generators in service for 23 years based on infrared spectrometric analysis

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society

Volumn 23, Issue 3, 2008, Pages 19-23

  Hao, Yanpeng ^a   Xie, Hengkun ^b  

^a SOUTH CHINA UNIVERSITY OF TECHNOLOGY   (China)

^b XI'AN JIAOTONG UNIVERSITY   (China)

Author keywords

Degradation behavior; Epoxy mica insulation; Infrared spectrometric analysis; Stator bar

Indexed keywords

ADHESIVES; FOURIER TRANSFORMS; GLASS FIBERS; MICA; PARTIAL DISCHARGES; POWDERS; SAMPLING; SOLVENTS; SPECTROMETERS; STATORS;

DEGRADATION BEHAVIOR; EPOXY; INFRARED SPECTROMETRIC ANALYSIS; METHYL GROUP; NITROSO COMPOSITES;

INSULATION;

EID: 43249086278     PISSN: 10006753     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (16)

1. Stone G C, Sedding H G, Lloyd B A, et al. The ability of diagnostic tests to estimate the remaining life of stator insulation [J]. IEEE Trans. Energy Conversion, 1988, 3 (4): 833-840.
2. Gupta B K, Culbert I M. Assessment of insulation condition in rotating machine stators [J]. IEEE Trans. Energy Conversion, 1992, 7 (3): 500-508.
3. Kimura K. Progress of insulation aging and diagnostics of HV rotating machine windings in Japan [J]. IEEE Electrical Insulation Magazine, 1993, 9: 13-20.
4. Morin R, Novak J P, Bartnikas R, et al. Analysis of inservice aged stator bars [J]. IEEE Trans. Energy Conversion, 1995, 10 (4): 645-652.
5. Geetha H N, Srinivas M B, Ramu T S. Pulse-count distribution as a possible diagnostic tool for assessing the level of degradation of rotating machine insulation [J]. IEEE Trans. Electr. Insul., 1990, 25 (4): 747-756.
6. Xie H K, Yue B, Hao Y P. Diagnosis of stator winding insulation of large generator [C]. Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials, Invited Paper, Nagoya, Japan, June 1-5, 2003: 274-277.
7. Lee Y-S, Nelson J K, Scarton H A, et al. An acoustic diagnostic technique for use with electric machine Insulation [J]. IEEE Trans. Dielectr. Electr. Insul., 1994, 1 (6): 1186-1193.
8. Hao Y P, Xie H K, Wang G L, et al. Assessment of insulation condition of generator stator bars based on velocity of ultrasonic waves [J]. IEEE Trans. Dielectr. Electr. Insul., 2003, 10 (3): 539-547.
9. Hao Y P, Yan B, Chen X L, et al. Study on the application of ultrasonic technique to stator insulation diagnosis [J]. Transactions of China Electrotechnical Society, 2002, 17 (5): 65-70.
10. Kim H D, Kim T W, Kim J H, et al. Thermal aging properties of mica/epoxy stator winding insulations [C]. IEEE Annual Report-Conference on Electrical Insulation and Dielectric Phenomena, Minneapolis, Oct. 19-22, 1997: 419-422.
11. Jia Z D, Hao Y P, Xie H K. The degradation assessment of epoxy/mica insulation under multi-stresses aging [J]. IEEE Trans. on Dielectrics and Electrical Insulation, 2006, 13 (2): 415-422.
12. Shields A J, Kemp I J. Degradation and breakdown of mica under partial discharge stressing [J]. IEE Proc.-Sci. Meas. Technol., 2000, 147 (3): 105-109.
13. Hepburn D M, Kemp I J, Shields A J, et al. Degradation of epoxy resin by partial discharges [J]. IEE Proc.-Sci. Meas. Technol., 2000, 147 (3): 97-104.
14. Zhao Ren, Yin Lin, Zhao Lianze, et al. Research on the occurrence of Fe in sericite, Chuzhou, Anhui Province, Shotheast China [J]. Mineral Transaction, 2004, 24 (3): 319-314.