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Adaptive Mho Distance Protection for Interconnected Transmission Lines Compensated with Thyristor Controlled Series Capacitor

Author

Listed:
  • Ghada M. Abo-Hamad

    (Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt)

  • Doaa Khalil Ibrahim

    (Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt)

  • Essam Aboul Zahab

    (Department of Electrical Power Engineering, Faculty of Engineering, Cairo University, Giza 12613, Egypt)

  • Ahmed F. Zobaa

    (College of Engineering, Design and Physical Sciences, Brunel University London, Uxbridge UB8 3PN, UK)

Abstract

This paper proposes an adaptive dynamic Mho distance relay based on a phase comparator scheme for protecting interconnected transmission networks compensated with a Thyristor Controlled Series Capacitor (TCSC). The proposed relay uses an impedance index factor to initiate the fault detection subroutine. The RMS of the positive sequence current of the faulted loop and the TCSC terminal current are compared for TCSC zone identification. A phase comparator for ground and phase distance elements is proposed, relying on the positive sequence voltage as a polarized memory quantity, while the operating and polarizing quantities are developed using estimated TCSC impedance to mitigate its negative impact. The proposed scheme is easy in implementation and independent on synchronized data transfer, as minimum communication requirements are needed. To evaluate the performance of the proposed scheme, extensive simulation studies were carried out on an IEEE9 bus system compensated with TCSC for different firing angles covering four modes of TCSC operations, different fault types, and fault locations. In addition, an IEEE-39 bus network, as a large interconnected system, is tested for validation purposes. The achieved results designate the precision of the proposed scheme. Moreover, the results indicate its effectiveness for fault resistance tolerance, close-in three phase faults, and stable power swing phenomenon compared with conventional relays.

Suggested Citation

  • Ghada M. Abo-Hamad & Doaa Khalil Ibrahim & Essam Aboul Zahab & Ahmed F. Zobaa, 2021. "Adaptive Mho Distance Protection for Interconnected Transmission Lines Compensated with Thyristor Controlled Series Capacitor," Energies, MDPI, vol. 14(9), pages 1-29, April.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2477-:d:543812
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    Citations

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    Cited by:

    1. Ghada M. Abo-Hamad & Doaa Khalil Ibrahim & Essam Aboul Zahab & Ahmed F. Zobaa, 2021. "Dynamic Quadrilateral Characteristic-Based Distance Relays for Transmission Lines Equipped with TCSC," Energies, MDPI, vol. 14(21), pages 1-23, October.
    2. Cholleti Sriram & Jarupula Somlal & B. Srikanth Goud & Mohit Bajaj & Mohamed F. Elnaggar & Salah Kamel, 2022. "Improved Deep Neural Network (IDNN) with SMO Algorithm for Enhancement of Third Zone Distance Relay under Power Swing Condition," Mathematics, MDPI, vol. 10(11), pages 1-19, June.

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