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Application of the Sinusoidal Voltage for Detection of the Resonance in Inductive Voltage Transformers

Author

Listed:
  • Michal Kaczmarek

    (Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland)

  • Ernest Stano

    (Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland)

Abstract

In the case of the inductive voltage transformer (VT), the resonance phenomenon may be the main reason for its poor transformation accuracy of the non-sinusoidal voltage. This problem mainly results from the leakage inductance and the parasitic capacitance of its primary winding. The application of the sinusoidal voltage with a frequency from 20 Hz to 20 kHz presented in this study ensures proper identification of the resonance frequencies of the medium-voltage (MV) inductive VTs. The results are consistent with the values obtained in the reference condition at their nominal primary voltage. Therefore, it is proven that the proposed solution is effective in all cases. The influence of the main frequency variation of the non-sinusoidal primary voltage on the resonance properties of the inductive VT is also studied. Moreover, the tests indicate that the capacitance of the load of the secondary winding may cause a decrease in their resonance frequency.

Suggested Citation

  • Michal Kaczmarek & Ernest Stano, 2021. "Application of the Sinusoidal Voltage for Detection of the Resonance in Inductive Voltage Transformers," Energies, MDPI, vol. 14(21), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7047-:d:666487
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    References listed on IDEAS

    as
    1. Dariusz Brodecki & Ernest Stano & Mateusz Andrychowicz & Piotr Kaczmarek, 2021. "EMC of Wideband Power Sources," Energies, MDPI, vol. 14(5), pages 1-14, March.
    2. Michal Kaczmarek & Ernest Stano, 2021. "Why Should We Test the Wideband Transformation Accuracy of Medium Voltage Inductive Voltage Transformers?," Energies, MDPI, vol. 14(15), pages 1-16, July.
    Full references (including those not matched with items on IDEAS)

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    Cited by:

    1. Michal Kaczmarek & Ernest Stano, 2023. "Review of Measuring Methods, Setups and Conditions for Evaluation of the Inductive Instrument Transformers Accuracy for Transformation of Distorted Waveforms," Energies, MDPI, vol. 16(11), pages 1-17, May.
    2. Michal Kaczmarek & Ernest Stano, 2023. "Challenges of Accurate Measurement of Distorted Current and Voltage in the Power Grid by Conventional Instrument Transformers," Energies, MDPI, vol. 16(6), pages 1-17, March.
    3. Michal Kaczmarek, 2022. "Two Channels Opto-Isolation Circuit for Measurements of the Differential Voltage of Voltage Transformers and Dividers," Energies, MDPI, vol. 15(7), pages 1-15, April.

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