Journal of Electrical Engineering and Technology

  • 제1권4호
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  • Pages.534-542
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  • 2006
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Effects of the Insulation Quality on the Frequency Response of Power Transformers

  • Abeywickrama Nilanga (Division of High Voltage Eng., Dept. of Materials and Manufacturing Technology, Chalmers University of Technology) ;
  • Ekanayake Chandima (Dept. of Electrical and Electronic Engineering, Faculty of Engineering, University of Peradeniya) ;
  • Serdyuk Yuriy V. (Division of High Voltage Eng., Dept. of Materials and Manufacturing Technology, Chalmers University of Technology) ;
  • Gubanski Stanislaw M. (Division of High Voltage Eng., Dept. of Materials and Manufacturing Technology, Chalmers University of Technology)
  • 발행 : 2006.12.01
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초록

This paper presents results of frequency domain spectroscopy (FDS) measurements on oil-impregnated pressboard insulation, their analyses and use of the data for modeling high frequency response (FRA) of transformers. The dielectric responses were measured in a broad frequency range, i.e. from 0.1 mHz to 1 MHz, on model samples containing different amount of moisture. The responses were parameterized with terms representing dc conductivity, low frequency dispersion and Cole-Cole polarization mechanisms and they were thereafter used to model the FRA response of a three-phase transformer.

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참고문헌

  1. S. M. Gubanski, P. Boss, G. Csepes, V. Der Houhanessian, J. Filippini, P. Guuinic, U. Gafvert, V. Karius, J. Lapworth, G. Urbani, P. Werelius and W. Zaengl, 'Dielectric response methods for diagnostics of power transformers', IEEE Electrical Insulation Magazine, Vol. 19, No.3, pp. 12-18, 2003. (also in CIGRE Technical brochure No. 254, Paris 2004) https://doi.org/10.1109/MEI.2003.1203017
  2. C. Ekanayake, 'Diagnosis of moisture in transformer insulation - Application of frequency domain spectroscopy', Ph.D. thesis, ISBN 91-7291-727-X, Chalmers University of technology, Gothenburg, Sweden 2006
  3. A. K. Jonscher, Dielectric relaxation in solids, 2nd ed. London, UK, Chelsea Dielectrics Press Limited, 1996
  4. P. Holmberg, 'Modeling the transient response of windings, laminated steel cores and electromagnetic power devices by means of lumped circuits', PhD Thesis, ISBN 91-554-4877-1, Uppsala University, Uppsala, Sweden, 2000
  5. N. S. Nise, Control System Engineering. New York:John Wiley & Sons, Inc, 2000
  6. Nilanga Abeywickrama, 'Modeling of high frequency response of transformers for characterization of insulation quality', Licentiate thesis, ISSN 1652-8891, Chalmers University of technology, Gothenburg, Sweden 2005
  7. U. Gafvert, G. Frimpong, and J. Fuhr, 'Modeling of dielectric measurements of power transformers', paper 15-103,1998 CIGRE session, Paris, 1998

피인용 문헌

  1. Detection and localization of disk-to-disk short circuits in transformer HV windings using an improved model vol.27, pp.11, 2017, https://doi.org/10.1002/etep.2393
  2. Understanding the dielectric properties of pressboard material thermally aged in Dibenzyl Disulphide (DBDS) included transformer oil vol.24, pp.1, 2017, https://doi.org/10.1109/TDEI.2016.006083
  3. Influence of temperature and moisture content on frequency response analysis of transformer winding vol.21, pp.3, 2014, https://doi.org/10.1109/TDEI.2014.6832288
  4. Examining the ageing of transformer insulation using FRA and FDS techniques vol.22, pp.2, 2015, https://doi.org/10.1109/TDEI.2015.7076829
  5. A method to estimate activation energy of power transformer insulation using time domain spectroscopy data vol.24, pp.5, 2017, https://doi.org/10.1109/TDEI.2017.006640