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Performance Analysis of Real-Scale 23 kV/60 MVA Class Tri-Axial HTS Power Cable for Real-Grid Application in Korea

Author

Listed:
  • Seok-Ju Lee

    (Mechatronics Research Institute, Changwon National University, Changwon 641-773, Korea)

  • Seong Yeol Kang

    (Department of Electrical Engineering, Changwon National University, Changwon 641-773, Korea)

  • Minwon Park

    (Department of Electrical Engineering, Changwon National University, Changwon 641-773, Korea)

  • DuYean Won

    (KEPCO Research Institute, Daejeon 34056, Korea)

  • Jaeun Yoo

    (KEPCO Research Institute, Daejeon 34056, Korea)

  • Hyung Suk Yang

    (KEPCO Research Institute, Daejeon 34056, Korea)

Abstract

Currently, various types of superconducting power cables are being developed worldwide, and research and development of a tri-axial high-temperature superconducting (HTS) power cable are underway. The tri-axial HTS power cable reduces the amount of HTS wire due to its multilayer structure, has high current characteristics, and has less loss than other superconducting cables. However, since the radii of each phase are different, magnetic coupling makes it difficult to measure power loss and analyze performance. This paper presents the results of the design and performance analysis of a tri-axial HTS power cable. A prototype tri-axial HTS power cable was designed with a rated power of 60 MVA, a rated voltage of 23 kV and a length of 6 m, and was tested by cooling to 77 K with liquid nitrogen. We analyzed the performance of the tri-axial HTS power cable in normal conditions through a finite element method (FEM) simulation and experiment. The alternating current (AC) loss of the tri-axial HTS power cable was calculated using a FEM program based on the Maxwell equation, and the result was used to confirm the AC loss of the tri-axial HTS power cable prototype measured by the electrical measurement method. In conclusion, in the current test of a tri-axial HTS cable designed as 23 kV/60 MVA, the DC critical current was over 6000 A, the AC loss was approximately 0.24 W/m, and the simulation and analysis design values were satisfied. The results of this study will be effectively applied to commercial tri-axial HTS power cable development to be installed in a real power system. This means that the actual tri-axial HTS cable has sufficient capacity for rated current operation in the system where it will be applied, and the actual measurement of the cable loss can be applied as an important factor in the design of the cooling capacity of the entire superconducting cable, which consists of several kilometers.

Suggested Citation

  • Seok-Ju Lee & Seong Yeol Kang & Minwon Park & DuYean Won & Jaeun Yoo & Hyung Suk Yang, 2020. "Performance Analysis of Real-Scale 23 kV/60 MVA Class Tri-Axial HTS Power Cable for Real-Grid Application in Korea," Energies, MDPI, vol. 13(8), pages 1-13, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:8:p:2053-:d:348107
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    References listed on IDEAS

    as
    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.
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    Cited by:

    1. Keuntae Lee & Deuk-Yong Koh & Junseok Ko & Hankil Yeom & Chang-Hyo Son & Jung-In Yoon, 2020. "Design and Performance Test of 2 kW Class Reverse Brayton Cryogenic System," Energies, MDPI, vol. 13(19), pages 1-13, September.
    2. Hongye Zhang & Zezhao Wen & Francesco Grilli & Konstantinos Gyftakis & Markus Mueller, 2021. "Alternating Current Loss of Superconductors Applied to Superconducting Electrical Machines," Energies, MDPI, vol. 14(8), pages 1-39, April.
    3. Grzegorz Komarzyniec, 2022. "Cooperation of an Electric Arc Device with a Power Supply System Equipped with a Superconducting Element," Energies, MDPI, vol. 15(7), pages 1-18, March.
    4. Youngjun Choi & Dongmin Kim & Changhyung Lee & Duyeon Won & Jaeun Yoo & Hyungsuk Yang & Seokho Kim, 2020. "Thermo-Hydraulic Analysis of a Tri-Axial High-Temperature Superconducting Power Cable with Respect to Installation Site Geography," Energies, MDPI, vol. 13(15), pages 1-17, July.

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