Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Quench Properties of GBCO Coated Conductors Under Repeated Short-Circuit Conditions

반복 단락 하에서의 GBCO Coated Conductor의 퀜치 특성

  • Ahn, Bong-Man (Industrial Cooperation Foundation, Jeonbuk National University) ;
  • Han, Byung-Sung (Department of Electric Engineering, Jeonbuk National University) ;
  • Kim, Hye-Rim (KEPCO Research Institute) ;
  • Hwang, Jee Won (Department of Information Technology and Engineering, Jeonbuk National University)
  • Received : 2021.03.12
  • Accepted : 2021.03.18
  • Published : 2021.05.01
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Abstract

Durability of superconductors used to fabricate superconducting power machines is important, since the machines need to operate stably. Quench properties of GBCO (GdBa2Cu3O7) coated conductor tapes laminated with brass were measured and analyzed to investigate the durability of tapes under repeated short-circuit conditions. With short currents applied to the tapes repeatedly, the quench properties of tapes were measured, and bubbles generated during quenches were observed. The results showed that quench resistance and distribution were maintained after repeated quenches. They were maintained after repeated quenches at various applied voltages, which show durability of the tapes under repeated short-circuit conditions. The quench distribution was uniform throughout repeated quenches, which contributed to the durability of tapes.

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Acknowledgement

본 연구는 한국전력공사의 2019년 착수 기초연구개발과제 연구비에 의해 지원되었음(과제번호: R19XO01-33).

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