Changes in Insulation Characteristics of High-Voltage Motor Stator Windings with Temperature and Moisture
American Journal of Electrical Power and Energy Systems
Volume 7, Issue 5, September 2018, Pages: 62-67
Received: Oct. 6, 2018;
Accepted: Oct. 22, 2018;
Published: Nov. 15, 2018
Views 416 Downloads 95
Taesik Kong, Korea Electric Power Corporation (KEPCO) Research Institute, Dae-jeon, South Korea
Heedong Kim, Korea Electric Power Corporation (KEPCO) Research Institute, Dae-jeon, South Korea
Hungsok Park, Korea Electric Power Corporation (KEPCO) Research Institute, Dae-jeon, South Korea
Soohoh Lee, Korea Electric Power Corporation (KEPCO) Research Institute, Dae-jeon, South Korea
Joomin Park, Korea South-East Power Company, Jin-ju, South Korea
This research shows that all of the insulation characteristics (insulation resistance, partial discharge, dissipation factor, and alternating leakage current) of HV motor become worse at high temperature. It is also shows that partial discharge and insulation resistance are reduced at moisture absorption. Therefore, to accurately analyze the insulation degradation trend, it is necessary that those tests always be conducted under the same conditions (temperature and moisture content).
Changes in Insulation Characteristics of High-Voltage Motor Stator Windings with Temperature and Moisture, American Journal of Electrical Power and Energy Systems.
Vol. 7, No. 5,
2018, pp. 62-67.
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
CIGRE Study Committee SC11, EG11.02, “Hydrogenerator Failures-Result of the Survey,” 2003.
Motor Reliability Working Group, Report of Large Motor Reliability Survey of Industrial and Commercial Installations, Part Ι, IEEE Transactions on Industry Applications, vol. A-21, no. 4, p. 863, 1985.
H. D. Kim, "Analysis of insulation aging mechanism in generator stator windings," J. KIEEME, vol. 15, no. 2, pp. 119–126, 2002.
H. D. Kim, “Analysis of Insulation Quality in Large Generator Stator Windings,” Journal of Electrical Engineering & Technology, vol.6, no.2, pp.384-390, 2011.
H. D. Kim, “Analysis of Insulation Aging Mechanism in Generator Stator Windings,” Journal of the KIEEME, vol.15, no. 2, pp. 119-126, 2002.
IEEE Std. 95-1977, Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High direct Voltage, pp. 13, 1977.
IEEE Std. 56-1997, IEEE Guide for Insulation Maintenance of Large Alternating-Current Rotating Machinery (10,000 kVA and Larger), pp. 12, 1997.
H. D. Kim, T. S. Kong, Y. H. Ju, B. H. Kim "Analysis of insulation quality in large generator stator windings," J. Electr. Eng. Technol., vol. 6, no. 2, pp. 384–390, 2011.
IEEE Std. 43-2000, IEEE Recommended Practice for Testing Insulation Resistance of Rotating Machinery, p. 10, 2000.
EPRI Research Project 2814-35 Final Report, Electric Motor Predictive and Preventive Maintenance Guide, pp. 4–2, 1992.
IEEE Standard, "Trial-use guide to the measurement of partial discharges in rotating machinery," IEEE Std 1434-2000, pp. 40, 2000.
Y. Ikeda and H. Fukagawa, “A Method for Diagnosing the Insulation Deterioration in Mica-Resin Insulated Stator Windings of Generator”, Yokosuka Research Laboratory Rep. No. W88046, 1988.
T. S. Kong, “Analysis of partial discharge patterns for generator stator windings,” Am. J. Electr. Power Energy Syst., vol. 4, no. 2, pp. 17–22, 2015.
J. H. Dymond, N. Stanges, K. Younsi and J. E. Hayward, “Stator Winding Failures : Contamination, Surface Discharge, Tracking”, IEEE Trans. on Industry Application, Vol. 38, No. 2, pp. 577-583, 2002.
H. Yoshida and U. Umemoto, “Insulation Diagnosis for Rotating Machine Insulation”, IEEE Trans. on Electric Insulation, Vol. EI-21, No 6, pp. 1021-2025, 1986.