American Journal of Electrical Power and Energy Systems

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Analysis of Partial Discharge Patterns for Generator Stator Windings

Received: 16 February 2015    Accepted: 04 March 2015    Published: 12 March 2015
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Abstract

Forced outage of generators due to stator winding insulation failure can result in significant financial loss because of the high cost repair and loss of production. In recent years, the demand for insulation diagnosis is increasing to prevent unexpected failures, as the capacity of generators has increased. Insulation diagnosis is composed of the insulation resistance measurement, polarization index measurement, dissipation factor (DF) tip-up test, AC current increasing ratio measurement, and the partial discharge (PD) measurement. In this paper, the results of the PD measurement and PD pulse pattern analysis performed on a healthy generator and two generators that experienced dielectric breakdown failure during operation is presented.

DOI 10.11648/j.epes.20150402.11
Published in American Journal of Electrical Power and Energy Systems (Volume 4, Issue 2, March 2015)
Page(s) 17-22
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Generator, Stator Winding, Insulation Failure, PD Pattern, AC Current, Dissipation Factor

References
[1] Hee-Dong Kim, "Analysis of Insulation Aging Mechanism in Generator Stator Windings", Journal of the KIEEME, Vol. 15, No2, pp. 119-126, 2002.
[2] R. Morin, R. Bartnikas and P. Menard, “A Three-Phase Multi-Stress Accelerated Electrical Aging Test Facility for Stator Bars”, IEEE Trans. on Electrical Conversion, Vol. 15, No. 2, pp. 149 ~ 156, 2000.
[3] H. Zhu, C. Morton and S. Cherukupalli, "Quality Evaluation of Stator Coils and Bars under Thermal Cycling Stress", Conference Record of the 2006 IEEE International Symposium on Electrical Insulation, pp. 384~387, 2006.
[4] H. G. Sedding, R. Schwabe, D. Levin, J. Stein and B. K. Gupta, "The Role AC & DC Hipot Testing in Stator Winding Ageing", IEEE Electrical Insulation and Electrical Manufacturing & Coil Winding Conference, pp. 455~457, 2003.
[5] “Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High direct Voltage", New York : Institute of Electrical and Electronics Engineers, IEEE+ Std. 95-1977, pp. 13, 1977.
[6] IEEE Standard "IEEE Guide for Insulation Maintenance of Large Alternating-Current Rotating Machinery (10,000kVA and Larger)" IEEE Std 56-1997, pp. 12, 1997.
[7] Hee-Dong Kim, Tae-Sik Kong, Young-Ho Ju, Byong-Han Kim "Analysis of Insulation Quality in Large Generator Stator Windings", Journal of Electrical Engineering & Technology Vol. 6, No. 2, pp. 384-390, 2011.
[8] Claude Hudon and Mario Belec, "PD Signal Interpretation for Generator Diagnostics", IEEE Trans. on Dielectrics and Electrical Insulation, Vol. 12, No. 2, pp. 297~319, 2005.
[9] 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
[10] IEEE Standard "Trial-Use Guide to the Measurement of Partial Discharge in Rotaing Machinery", IEEE Std 1434-2000, pp. 40, 2000
[11] H. Yoshida and U. Umemoto, "Insulation Diagnosis for Rotating Machine Insulation", IEEE Trans. on Electric Insulation, Vol. EI-21, No. 6, pp. 1021-1025, 1986
[12] J.H. Dymond, N. Stranges, K. Younsi and J. E. Hayward, "Stator Winding Failures : Contamination, Surface Discharge, Tracking", IEEE Trans. on Industry Applications, Vol. 38, No. 2, pp. 577-583, 2002.
Author Information
  • Korea Electric Power Corporation (KEPCO) Research Institute, Daejeon, South Korea

  • Korea Electric Power Corporation (KEPCO) Research Institute, Daejeon, South Korea

  • Korea Electric Power Corporation (KEPCO) Research Institute, Daejeon, South Korea

  • Korea Electric Power Corporation (KEPCO) Research Institute, Daejeon, South Korea

  • Korea Electric Power Corporation (KEPCO) Research Institute, Daejeon, South Korea

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  • APA Style

    Tae-Sik Kong, Hee-Dong Kim, Tae-Sung Park, Kyeong-Yeol Kim, Ho-Yol Kim. (2015). Analysis of Partial Discharge Patterns for Generator Stator Windings. American Journal of Electrical Power and Energy Systems, 4(2), 17-22. https://doi.org/10.11648/j.epes.20150402.11

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    ACS Style

    Tae-Sik Kong; Hee-Dong Kim; Tae-Sung Park; Kyeong-Yeol Kim; Ho-Yol Kim. Analysis of Partial Discharge Patterns for Generator Stator Windings. Am. J. Electr. Power Energy Syst. 2015, 4(2), 17-22. doi: 10.11648/j.epes.20150402.11

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    AMA Style

    Tae-Sik Kong, Hee-Dong Kim, Tae-Sung Park, Kyeong-Yeol Kim, Ho-Yol Kim. Analysis of Partial Discharge Patterns for Generator Stator Windings. Am J Electr Power Energy Syst. 2015;4(2):17-22. doi: 10.11648/j.epes.20150402.11

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  • @article{10.11648/j.epes.20150402.11,
      author = {Tae-Sik Kong and Hee-Dong Kim and Tae-Sung Park and Kyeong-Yeol Kim and Ho-Yol Kim},
      title = {Analysis of Partial Discharge Patterns for Generator Stator Windings},
      journal = {American Journal of Electrical Power and Energy Systems},
      volume = {4},
      number = {2},
      pages = {17-22},
      doi = {10.11648/j.epes.20150402.11},
      url = {https://doi.org/10.11648/j.epes.20150402.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.epes.20150402.11},
      abstract = {Forced outage of generators due to stator winding insulation failure can result in significant financial loss because of the high cost repair and loss of production. In recent years, the demand for insulation diagnosis is increasing to prevent unexpected failures, as the capacity of generators has increased. Insulation diagnosis is composed of the insulation resistance measurement, polarization index measurement, dissipation factor (DF) tip-up test, AC current increasing ratio measurement, and the partial discharge (PD) measurement. In this paper, the results of the PD measurement and PD pulse pattern analysis performed on a healthy generator and two generators that experienced dielectric breakdown failure during operation is presented.},
     year = {2015}
    }
    

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    T1  - Analysis of Partial Discharge Patterns for Generator Stator Windings
    AU  - Tae-Sik Kong
    AU  - Hee-Dong Kim
    AU  - Tae-Sung Park
    AU  - Kyeong-Yeol Kim
    AU  - Ho-Yol Kim
    Y1  - 2015/03/12
    PY  - 2015
    N1  - https://doi.org/10.11648/j.epes.20150402.11
    DO  - 10.11648/j.epes.20150402.11
    T2  - American Journal of Electrical Power and Energy Systems
    JF  - American Journal of Electrical Power and Energy Systems
    JO  - American Journal of Electrical Power and Energy Systems
    SP  - 17
    EP  - 22
    PB  - Science Publishing Group
    SN  - 2326-9200
    UR  - https://doi.org/10.11648/j.epes.20150402.11
    AB  - Forced outage of generators due to stator winding insulation failure can result in significant financial loss because of the high cost repair and loss of production. In recent years, the demand for insulation diagnosis is increasing to prevent unexpected failures, as the capacity of generators has increased. Insulation diagnosis is composed of the insulation resistance measurement, polarization index measurement, dissipation factor (DF) tip-up test, AC current increasing ratio measurement, and the partial discharge (PD) measurement. In this paper, the results of the PD measurement and PD pulse pattern analysis performed on a healthy generator and two generators that experienced dielectric breakdown failure during operation is presented.
    VL  - 4
    IS  - 2
    ER  - 

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