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Phase-Shifting Transformer Efficiency Analysis Based on Low-Voltage Laboratory Units

Author

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  • Paweł Albrechtowicz

    (Department of Electrical Engineering, Cracow University of Technology, Warszawska 24 St., 31-155 Cracow, Poland)

Abstract

Phase-shifting transformers are effective elements used to control power flows in many power systems. Their positive influence on power flows has been proved in the literature. However, the efficiency of phase-shifting transformers has not been analyzed, especially not with regard for their various types. This study is therefore focused on the efficiency question with respect to electrical energy parameters. Research was performed on a laboratory phase-shifter unit with longitudinal and quadrature voltage regulation, and then these results were correlated to the simulation model equivalent. Laboratory transformer parameter data were used to prepare asymmetrical and symmetrical phase-shifting transformer simulation models. Simulation results were then used to compare the electrical properties and efficiency of all the types of phase-shifting transformer considered. All phase-shifting transformer types had a significant impact on the transmitted active power, but each type had different features. The symmetrical unit had the lowest power losses and a stable output voltage level compared to the asymmetrical one, which increased the output voltage, while the quadrature voltage also grew. These features must be considered, taking into account power system conditions such as the voltage variability profile and active power transfer demand. In this study, we propose the construction of an asymmetrical controllable phase-shifting transformer in order to achieve flexible control.

Suggested Citation

  • Paweł Albrechtowicz, 2021. "Phase-Shifting Transformer Efficiency Analysis Based on Low-Voltage Laboratory Units," Energies, MDPI, vol. 14(16), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:16:p:5049-:d:616160
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    References listed on IDEAS

    as
    1. Dominik Mamcarz & Paweł Albrechtowicz & Natalia Radwan-Pragłowska & Bartosz Rozegnał, 2020. "The Analysis of the Symmetrical Short-Circuit Currents in Backup Power Supply Systems with Low-Power Synchronous Generators," Energies, MDPI, vol. 13(17), pages 1-14, August.
    2. Tomasz Bednarczyk & Mateusz Szablicki & Adrian Halinka & Piotr Rzepka & Paweł Sowa, 2021. "Phase Shifting Transformer Electromagnetic Model Dedicated for Power System Protection Testing in a Transient Condition," Energies, MDPI, vol. 14(3), pages 1-22, January.
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    4. Paweł Albrechtowicz & Jerzy Szczepanik, 2021. "The Comparative Analysis of Phase Shifting Transformers," Energies, MDPI, vol. 14(14), pages 1-16, July.
    5. Bartosz Rozegnał & Paweł Albrechtowicz & Dominik Mamcarz & Natalia Radwan-Pragłowska & Artur Cebula, 2020. "The Short-Circuit Protections in Hybrid Systems with Low-Power Synchronous Generators," Energies, MDPI, vol. 14(1), pages 1-12, December.
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    1. Paweł Albrechtowicz & Bartosz Rozegnał & Piotr Cisek, 2022. "Comparison of Phase-Shifting Transformers Properties," Energies, MDPI, vol. 15(17), pages 1-15, August.
    2. Paweł Albrechtowicz & Bartosz Rozegnał & Jerzy Szczepanik & Maciej Sułowicz & Piotr Cisek, 2023. "Application of Phase-Shifting Transformer with Longitudinal and Transverse Voltage Regulation," Energies, MDPI, vol. 16(12), pages 1-15, June.

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