Condition assessment of stator insulation during drying, wetting and electrical ageing

IEEE Transactions on Dielectrics and Electrical Insulation

Volumn 20, Issue 6, 2013, Pages 2081-2090

  Fernando, M A R M ^a   Naranpanawa, W M L B ^a   Rathnayake, R M H M ^a   Jayantha, G A ^b  

^a UNIVERSITY OF PERADENIYA   (Sri Lanka)

^b Generation Projects Ceylon Electricity Board   (Sri Lanka)

Author keywords

Condition assessment; Electrical ageing; Frequency domain spectroscopy; Moisture; Stator insulation

Indexed keywords

ASPHALT; FREQUENCY DOMAIN ANALYSIS; INSULATION; MICA; MOISTURE; NONDESTRUCTIVE EXAMINATION; PARAMETER ESTIMATION; STATORS; WETTING; WINDING;

CONDITION ASSESSMENTS; ELECTRICAL AGEING; ESTIMATED PARAMETER; FREQUENCY DOMAIN SPECTROSCOPY; INSULATION RESISTANCE; LABORATORY INVESTIGATIONS; NON-DESTRUCTIVE TEST; STATOR INSULATION;

DRYING;

EID: 84898465704     PISSN: 10709878     EISSN: None     Source Type: Journal    
DOI: 10.1109/TDEI.2013.6678856     Document Type: Article

References (21)

1. R. Brutsch, M. Tari, K. Frohlich, T. Weiers, and R. Vogelsang, "Insulation failure mechanisms of power generators", IEEE Electr. Insul. Magazine, Vol. 24, No. 4, pp. 17-25, 2008.
2. CIGRE Study Committee SC11, EG11.02, "Hydro-generator Failures-Results of the Survey," 2003.
3. T.P. Hong, O. Lesaint, and P. Gonon, "Water Absorption in a Glass-Mica-Epoxy Composite I: Influence on Electrical properties", IEEE Trans. Dielectr. Electr. Insul, Vol. 16, pp. 1-10, 2009.
4. G.G. Stone, E.A. Boulter, I. Culbert, and H. Dhirani, Electrical Insulation for Rotating Machines-Design, Evaluation, Ageing, Testing and Repair, IEEE Press, ISBN 0-471-44506-1, 2004
5. M. Farahani, H. Borsi, and E. Gockenbach, "Dielectric Response Studies on Insulating Systems of Rotating Machines", IEEE Trans. Dielectr. Electr. Insul, Vol. 13, pp. 383-393, 2006.
6. M. Farahani, H. Borsi, E. Gockenbach, K. Schafer, and M. Kaufhold, "Behavior of Machine Insulation Systems Subjected to Accelerated Thermal Ageing Test", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1364-1372, 2010.
7. G.A. Jayantha, M.A.R.M. Fernando, and C.M.B. Ekanayake, "Monitoring of Moisture on Stator Winding Insulation During Drying", 4th IEEE Int'l. Conf. Industrial and Information Systems (ICIIS), Kandy Sri Lanka, Paper No. PSEHV3-4, 2009.
8. G.A. Jayantha and M.A.R.M. Fernando, "Field Experience of Generator Stator Insulation Monitoring and Failures in Sri Lanka", 7th IEEE Int. Conf. Industrial and Information Systems (ICIIS2012), Madras India, Paper No. 171, Aug. 2012.
9. IEEE Std 95-2002, "IEEE recommended practice for testing of ac machinery (2300 V and above) with high direct voltage", 2002.
10. W. Mcdermid, and J.C. Bromley, "The Ramp Test - Its Origins Development and Application", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1470-1478, 2010.
11. E. David, T. Godin, J. Bellemare, and L. Lamarre, "Modeling of the Dielectric Response of a Stator Winding Insulation from a DC Ramp Test", IEEE Trans. Dielectr. Electr. Insul, Vol. 14, pp. 1548-1558, 2007. (Pubitemid 350274166)
12. E. David, R. Soltani, and L. Lamarre, "PDC Measurements to Assess Machine Insulation" IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1364-1372, 2010.
13. S.A. Brumiwatt, "On-site Non-destructive Dielectric Response Diagnosis of Rotating Machines", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1453-1460, 2010.
14. K. Younsi, P. Neti, M. Shah, J.Y. Zhou, J. Krahn, K. Weeber, and C.D. Whitefield, "On-line Capacitance and Dissipation Factor Monitoring of Stator Insulation", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1441-1452, 2010.
15. J.K. Nelson and J. Stein, "A Field Assessment of PD and EMI Methodology Applied to Large Utility Generators", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1411-1427, 2010.
16. M. Levesque, E David, C. Hudon, and M Belec, "Effect of Surface Degradation on Slot Partial Discharge Activity", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1428-1440, 2010.
17. N. Taylor and H. Edin, "Stator End-winding Currents in Frequencydomain Dielectric Response Measurements", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1489-1498, 2010.
18. A.K. Jonscher, Dielectric Relaxation in Solids, Chelsea Dielectrics Press, London UK, ISBN 0-9508711-0-9, 1983
19. A. Helgason and U. Gafvert, "Dielectric Response Measurements in Time and Frequency Domain on High Voltage Insulation with Different Response", Int'l. Sympos. Electr. Insul. Materials, Toyohashi, Japan, pp. 393-398, 1998.
20. C.M.B. Ekanayake, Diagnosis of Moisture in Transformer Insulation - Application of Frequency Domain Spectroscopy, Ph.D. Thesis, Chalmers University of Technology, Sweden 2006.
21. R. Soltani, E. David, L. Lamarre, "Impact of Humidity on Dielectric Response of Rotating Machine Insulation System", IEEE Trans. Dielectr. Electr. Insul, Vol. 17, pp. 1479-1488, 2010.