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Three-Phase and Single-Phase Measurement of Overhead Power Line Impedance Evaluation

Author

Listed:
  • Boris Cintula

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

  • Žaneta Eleschová

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

  • Matej Cenký

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

  • Peter Janiga

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

  • Jozef Bendík

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

  • Anton Beláň

    (Faculty of Electrical Engineering and Information Technology, Slovak University of Technology in Bratislava, Ilkovičova 3, 81 219 Bratislava, Slovakia)

Abstract

Calculation and measurement of the overhead power lines electrical parameters is common practice in today’s electrical engineering industry; however, there is very little data to actually compare these two approaches because measured data in such detail are mostly unavailable for academic purposes. Based on the very detailed model of an overhead power line in MATLAB Simulink environment and conducted experimental measurement, this article specifically covers the exact evaluation of the impedance of the investigated overhead power line. Differences between calculation and experimental measurement are shown and discussed accordingly, where, surprisingly, the biggest deviation was observed in the positive resistance parameter. The connection between different measurement techniques (multiple single-phase and three-phase methods), as well as the power line asymmetry reflection in the impedance matrix is explained as well as compared to expected values from the computations. The complete mathematical approach for electrical parameters evaluation from different measurement methods is explained step-by-step, and the final equations are introduced for each method. Proposed methods of obtaining the electrical parameters of the power line are then concluded as the ones with great accuracy and wide usage in practical applications. It shows the great importance of correct input data for the electrical parameters’ theoretical computations and the need to know the measurement methodology and apparatus perfectly to process the measured data and interpret them correctly.

Suggested Citation

  • Boris Cintula & Žaneta Eleschová & Matej Cenký & Peter Janiga & Jozef Bendík & Anton Beláň, 2021. "Three-Phase and Single-Phase Measurement of Overhead Power Line Impedance Evaluation," Energies, MDPI, vol. 14(19), pages 1-24, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:19:p:6314-:d:649214
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    References listed on IDEAS

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    1. Michal Ptacek & Vaclav Vycital & Petr Toman & Jan Vaculik, 2019. "Analysis of Dense-Mesh Distribution Network Operation Using Long-Term Monitoring Data," Energies, MDPI, vol. 12(22), pages 1-25, November.
    2. Kinan Wannous & Petr Toman, 2018. "Evaluation of Harmonics Impact on Digital Relays," Energies, MDPI, vol. 11(4), pages 1-20, April.
    3. Theofilos A. Papadopoulos & Andreas I. Chrysochos & Christos K. Traianos & Grigoris Papagiannis, 2020. "Closed-Form Expressions for the Analysis of Wave Propagation in Overhead Distribution Lines," Energies, MDPI, vol. 13(17), pages 1-29, September.
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