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A Novel Approach for Elimination of Defects of Blocking and Unblocking in Distance Relays during Power Swing

Author

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  • Amirreza Mehri

    (Electrical Engineering Department, Faculty of Engineering, University of Zanjan, Zanjan 45371-38791, Iran)

  • Kazem Mazlumi

    (Electrical Engineering Department, Faculty of Engineering, University of Zanjan, Zanjan 45371-38791, Iran)

  • Hamed HashemiDezaki

    (Faculty of Electrical and Computer Engineering, University of Kashan, Kashan 87317-53153, Iran)

  • Mohammad Hasan Mansouri

    (Electrical Engineering Department, Iran University of Science and Technology, Tehran 16846-13114, Iran)

  • Ramin Mahyaei

    (Electrical Engineering Department, Iran University of Science and Technology, Tehran 16846-13114, Iran)

Abstract

In power systems, distance relays are commonly employed as the primary protection for transmission lines, and their operation is of utmost importance. Power swings are a type of phenomenon that can lead to improper functioning of conventional distance relays, posing a threat to the uninterrupted flow of electrical power. The occurrence of a power swing disrupts the impedance measured by the relay, causing it to deviate from the normal load condition and enter the relay tripping zones. This research paper introduces a novel method based on the Prony method for extracting current waveform components, enabling fault detection during power swings. Subsequently, the proposed method’s accuracy is assessed through simulations implemented on a nine-bus power system, involving three-phase current signal processing and the application of the proposed algorithm. Various fault scenarios encompassing varying fault distances from the relay position, fault resistances, and power angles within the 9-bus system are simulated to encompass a wide range of fault environments. The simulation results demonstrate the effectiveness of the proposed algorithm in detecting all types of faults, including symmetrical and asymmetrical faults, during power swings.

Suggested Citation

  • Amirreza Mehri & Kazem Mazlumi & Hamed HashemiDezaki & Mohammad Hasan Mansouri & Ramin Mahyaei, 2023. "A Novel Approach for Elimination of Defects of Blocking and Unblocking in Distance Relays during Power Swing," Sustainability, MDPI, vol. 15(18), pages 1-21, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:18:p:13435-:d:1235296
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    References listed on IDEAS

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    1. Igor Ivanković & Igor Kuzle & Ninoslav Holjevac, 2018. "Algorithm for Fast and Efficient Detection and Reaction to Angle Instability Conditions Using Phasor Measurement Unit Data," Energies, MDPI, vol. 11(3), pages 1-21, March.
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