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Investigation on the Resonant Oscillations in an 11 kV Distribution Transformer under Standard and Chopped Lightning Impulse Overvoltages with Different Shield Placement Configurations

Author

Listed:
  • Avinash Srikanta Murthy

    (Advanced Lightning, Power and Energy Research (ALPER), Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia)

  • Norhafiz Azis

    (Advanced Lightning, Power and Energy Research (ALPER), Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia
    Institute of Advanced Technology (ITMA), Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia)

  • Mohd Fairouz Mohd Yousof

    (Faculty of Electrical and Electronics Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor 86400, Malaysia)

  • Jasronita Jasni

    (Advanced Lightning, Power and Energy Research (ALPER), Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia)

  • Mohammad Lutfi Othman

    (Advanced Lightning, Power and Energy Research (ALPER), Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Putra Malaysia, UPM Serdang, Selangor 43400, Malaysia)

  • Mohd Aizam Talib

    (TNB Research Sdn. Bhd., Kajang, Selangor 43000, Malaysia)

  • Bhaba Priyo Das

    (ETEL Ltd., Auckland 0640, New Zealand)

Abstract

This paper presents an investigation on the resonant oscillations of an 11 kV layer-type winding transformer under standard and chopped lightning impulse overvoltage conditions based on calculated parameters. The resistances, inductances and capacitances were calculated in order to develop the transformer winding equivalent circuit. The impulse overvoltages were applied to the high voltage (HV) winding and the resonant oscillations were simulated for each of the layers based on different electrostatic shield placement configurations. It is found that the placement of grounded shields between layer 13 and layer 14 results in the highest resonant oscillation and non-linear initial voltage distribution. The oscillation and linear stress distributions are at the lowest for shield placement between the HV and low voltage (LV) windings.

Suggested Citation

  • Avinash Srikanta Murthy & Norhafiz Azis & Mohd Fairouz Mohd Yousof & Jasronita Jasni & Mohammad Lutfi Othman & Mohd Aizam Talib & Bhaba Priyo Das, 2019. "Investigation on the Resonant Oscillations in an 11 kV Distribution Transformer under Standard and Chopped Lightning Impulse Overvoltages with Different Shield Placement Configurations," Energies, MDPI, vol. 12(8), pages 1-24, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:8:p:1466-:d:223814
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    Citations

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    Cited by:

    1. Avinash Srikanta Murthy & Norhafiz Azis & Jasronita Jasni & Mohammad Lutfi Othman & Mohd Fairouz Mohd Yousof & Mohd Aizam Talib, 2020. "Effect of shield placement for transient voltage mitigation due to switching surges in a 33/11 kV transformer windings," PLOS ONE, Public Library of Science, vol. 15(10), pages 1-19, October.
    2. Marek Florkowski & Jakub Furgał & Maciej Kuniewski, 2020. "Propagation of Overvoltages in the Form of Impulse, Chopped and Oscillating Waveforms in Transformer Windings—Time and Frequency Domain Approach," Energies, MDPI, vol. 13(2), pages 1-16, January.

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