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Fault Analysis and Design of a Protection System for a Mesh Power System with a Co-Axial HTS Power Cable

Author

Listed:
  • Thai-Thanh Nguyen

    (Department of Electrical Engineering, Incheon National University, Songdo-dong, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea)

  • Woon-Gyu Lee

    (Department of Electrical Engineering, Incheon National University, Songdo-dong, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea)

  • Hak-Man Kim

    (Department of Electrical Engineering, Incheon National University, Songdo-dong, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea)

  • Hyung Suk Yang

    (KEPCO Research Institute, Daejeon 34056, Korea)

Abstract

The uses of high-temperature superconducting (HTS) cables pose a challenge of power system protection since the impedance of the HTS cable is varied during fault conditions. The protection systems should be designed properly to ensure the reliability and stability of the whole system. This paper presents a fault analysis of the co-axial HTS cable in the mesh system and proposes a coordinated protection system. In the proposed protection system, the main protection is the differential current relay whereas the backup protections are the overcurrent and directional overcurrent relays. The normal and abnormal relay operations are considered to analyze the transient fault current in the HTS cable and evaluate the performance of the proposed coordinated protection system. Characteristics of cable impedances and temperatures under various fault conditions are presented. The proposed protection scheme is validated by the simulation in the PSCAD/EMTDC program. Simulation results show that the coordinated protection scheme could successfully protect the HTS cables in both normal and abnormal relay operations.

Suggested Citation

  • Thai-Thanh Nguyen & Woon-Gyu Lee & Hak-Man Kim & Hyung Suk Yang, 2020. "Fault Analysis and Design of a Protection System for a Mesh Power System with a Co-Axial HTS Power Cable," Energies, MDPI, vol. 13(1), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:1:p:220-:d:304611
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    References listed on IDEAS

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    1. Seok-Ju Lee & Hae-Jin Sung & Minwon Park & DuYean Won & Jaeun Yoo & Hyung Suk Yang, 2019. "Analysis of the Temperature Characteristics of Three-Phase Coaxial Superconducting Power Cable according to a Liquid Nitrogen Circulation Method for Real-Grid Application in Korea," Energies, MDPI, vol. 12(9), pages 1-11, May.
    2. Thai-Thanh Nguyen & Woon-Gyu Lee & Seok-Ju Lee & Minwon Park & Hak-Man Kim & DuYean Won & Jaeun Yoo & Hyung Suk Yang, 2019. "A Simplified Model of Coaxial, Multilayer High-Temperature Superconducting Power Cables with Cu Formers for Transient Studies," Energies, MDPI, vol. 12(8), pages 1-14, April.
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    Cited by:

    1. Hun-Chul Seo, 2020. "New Protection Scheme in Loop Distribution System with Distributed Generation," Energies, MDPI, vol. 13(22), pages 1-20, November.
    2. Sisi Peng & Chuanbing Cai & Jiaqi Cai & Jun Zheng & Difan Zhou, 2022. "Optimum Design and Performance Analysis of Superconducting Cable with Different Conductor Layout," Energies, MDPI, vol. 15(23), pages 1-14, November.

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