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HTS Transformer’s Partial Discharges Raised by Floating Particles and Nitrogen Bubbles

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Abstract

Presence of defects, conducting particles, nonconducting particles, and nitrogen gas bubbles in the insulation system of high-temperature superconducting (HTS) transformers, mainly inside the liquid nitrogen as its major insulation, can create local field enhancement and consequently partial discharges which eventually lead to the catastrophic failure of the transformer. In this paper, two-dimensional (2D) axisymmetric finite element method (FEM) modeling via COMSOL Multiphysics software has been utilized for the investigation of the impact of size and shape of conducting particles and nitrogen gas bubbles on partial discharge (PD) activities in liquid nitrogen. Conducting particles of various shapes and the nitrogen bubbles are studied for PD generation. The results have been analyzed and compared. This can be employed for HTS transformer efficiently and PD free insulation design to enhance its insulation life.

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References

  1. Moradnouri, A., Ardeshiri, A., Vakilian, M., Hekmati, A., Fardmanesh, M.: Survey on high-temperature superconducting transformer windings design. J. Supercond. Nov. Magn (2020). https://doi.org/10.1007/s10948-020-05539-6

  2. Zha, W., et al.: Influence of bubbles on insulation properties of LN2 for SFCL under lightning impulse and DC voltage. IEEE Trans. Appl. Supercond. 29(8), 1–6 (2019)

    Article  Google Scholar 

  3. Gerhold, J.: Properties of cryogenic insulants. Elsevier, Cryogenics. 38(11), 1063–1081 (1998)

    Article  ADS  Google Scholar 

  4. Swaffield, D.J., Lewin, P.L., Tian, Y., Chen, G., Swingler, S.G.: Partial discharge characterisation in liquid nitrogen composite systems. IEEE Inter. Conf. Dielectr. Liq., Coimbra, Portugal. 139–142 (2005)

  5. Moradnouri, A., Vakilian, M., Hekmati, A., Fardmanesh, M.: The end part of cryogenic H. V. bushing insulation design in a 230/20 kV HTS transformer,” Elsevier. Cryogenics. 108, (2020). https://doi.org/10.1016/j.cryogenics.2020.103090

  6. Sarathi, R., Giridhar, A.V., Mani, A., Sethupathi, K.: Investigation of partial discharge activity of conducting particles in liquid nitrogen under DC voltages using UHF technique. IEEE Trans. Dielectr. Electr. Insul. 15(3), 655–662 (2008)

    Article  Google Scholar 

  7. Blaz, M., Kurrat, M.: Influence of bubble formation on the dielectric behavior of liquid nitrogen. IEEE Trans. Appl. Supercond. 21(3), 1896–1899 (2011)

    Article  ADS  Google Scholar 

  8. Sarathi, R., Giridhar, A.V., Sethupathi, K.: Influence of barrier on partial discharge activity by a conducting particle in liquid nitrogen under AC voltages adopting UHF technique,” Elsevier. Cryogenics. 51(2), 79–84 (2011)

    Article  ADS  Google Scholar 

  9. Blaz, M., Kurrat, M.: Influence of bubbles in pressurized liquid nitrogen on the discharge behavior in a homogeneous electric field. IEEE Trans. Appl. Supercond. 23(3), 1–4 (2013)

    Article  Google Scholar 

  10. Sarathi, R., Giridhar, A.V., Sethupathi, K.: Analysis of partial discharge activity by a conducting particle in liquid nitrogen under AC voltages adopting UHF technique,” Elsevier. Cryogenics. 50(1), 43–49 (2010)

    Article  ADS  Google Scholar 

  11. Truong, L.H.: Dielectrics for high temperature superconducting applications. PhD Thesis, University of Southampton (2013)

  12. Chakravorti, S.: Electric field analysis. CRC Press, Taylor & Francis Group (2015)

    MATH  Google Scholar 

  13. Du, B.X., et al.: Characterization of partial discharge with polyimide film in LN2 considering high temperature superconducting cable insulation. IEEE Trans. Appl. Supercond. 24(5), 1–5 (2014)

    Article  Google Scholar 

  14. Swaffield, D.J., Lewin, P.L., Chen, G., Swingler, S.G.: Partial discharge characterization of streamers in liquid nitrogen under applied AC voltages. IEEE Trans. Dielectr. Electr. Insul. 15(3), 635–646 (2008)

    Article  Google Scholar 

  15. Truong, L.H., Lewin, P.L.: Phase resolved analysis of partial discharges in liquid nitrogen under AC voltages. IEEE Trans. Dielectr. Electr. Insul. 20(6), 2179–2187 (2013)

    Article  Google Scholar 

  16. Bhaga, D., Weber, M.E.: Bubbles in viscous liquids: shapes, wakes and velocities. J. Fluid Mech. 105, 61–85 (1981)

    Article  ADS  Google Scholar 

  17. Moradnouri, A., Vakilian, M., Hekmati, A., Fardmanesh, M.: Optimal design of flux diverter using genetic algorithm for axial short circuit force reduction in HTS transformers. IEEE Trans. Appl. Supercond. 30(1), 1–8 (2020)

    Article  Google Scholar 

  18. Ainslie, M.D., Hu, D., Zou, J., Cardwell, D.A.: Simulating the in-field AC and DC performance of high-temperature superconducting coils. IEEE Trans. Appl. Supercond. 25(3), 1–5 (2015)

    Article  Google Scholar 

  19. Moradnouri, A., Vakilian, M., Hekmati, A., Fardmanesh, M.: Multi-segment winding application for axial short circuit force reduction under tap changer operation in HTS transformers. J. Supercond. Nov. Magn. 32(10), 3171–3182 (2019)

    Article  Google Scholar 

  20. Hill, N., Kurrat, M.: Discharge mechanisms in liquid nitrogen—breakdown field strength of gaseous nitrogen. IEEE Trans. Appl. Supercond. 28(4), 1–5 (2018)

    Article  Google Scholar 

  21. Takahashi, Y., Ohtsuka, K.: Corona discharges and bubbling in liquid nitrogen. J. Phys. D. Appl. Phys. 8(2), 165–169 (1975)

    Article  ADS  Google Scholar 

  22. Kuffel, E., Zaengl, W.S., Kuffel, J.: High voltage engineering fundamentals. Published by Butterworth-Heinemann, Second Edition (2000)

    Google Scholar 

  23. James, D.R., Sauers, I., Ellis, A.R., Schwenterly, S.W., Tuncer, E., Pleva, E.: AC and impulse breakdown of liquid nitrogen at 77 K for quasi-uniform field gaps. AIP Conf. Proc. 986(1), 42–49 (2008)

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Center of Excellence in Power System Management and Control, Electrical Engineering Department, Sharif University of Technology, Tehran, 1136511155, Iran

    Ahmad Moradnouri & Mehdi Vakilian

  2. School of Electrical Engineering, Iran University of Science and Technology, Tehran, 16844, Iran

    Arsalan Hekmati

  3. Electrical Engineering Department, Sharif University of Technology, Tehran, 1136511155, Iran

    Mehdi Fardmanesh

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  1. Ahmad Moradnouri
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  2. Mehdi Vakilian
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  3. Arsalan Hekmati
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  4. Mehdi Fardmanesh
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Correspondence to Ahmad Moradnouri.

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Moradnouri, A., Vakilian, M., Hekmati, A. et al. HTS Transformer’s Partial Discharges Raised by Floating Particles and Nitrogen Bubbles. J Supercond Nov Magn 33, 3027–3034 (2020). https://doi.org/10.1007/s10948-020-05581-4

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