한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
권호 표지

Quench Characteristics of Resistive Superconducting Fault Current Limiters

저항형 초전도 한류소자의 퀜치 특성

  • Kim, Hye-Rim (Power system Laboratory, Korea Electric Power Research Institute) ;
  • Hyun, Ok-Bae (Power system Laboratory, Korea Electric Power Research Institute) ;
  • Choi, Hyo-Sang (Power system Laboratory, Korea Electric Power Research Institute) ;
  • Hwang, Si-Dole (Power system Laboratory, Korea Electric Power Research Institute) ;
  • Kim, Sang-Joon (Power system Laboratory, Korea Electric Power Research Institute)
  • 김혜림 (한전 전력연구원 전력계통연구실) ;
  • 현옥배 (한전 전력연구원 전력계통연구실) ;
  • 최효상 (한전 전력연구원 전력계통연구실) ;
  • 황시돌 (한전 전력연구원 전력계통연구실) ;
  • 김상준 (한전 전력연구원 전력계통연구실)
  • Published : 1999.08.18
Download PDF
⟨ Previous Next ⟩

Abstract

We investigated the quench characteristics of meander line type resistive superconducting fault current limiters based on YBCO thin films grown on 2" diameter LaAlO$_3$ substrates. A gold layer was deposited onto the 0.4 ${\mu}$ m thick YBCO film to disperse the heat generated at hot spots, prior to patterning into 1 mm wide meander lines by photolithography. The limiters were tested with simulated fault currents of various amplitudes. The quench started at 10 A and was completed within 1 msec at the fault current of 65 A$_{peak}$. The dynamic quench characteristics were explained based on the heat conduction within the film and the heat transfer between the film and the surrounding liquid nitrogen. The heat transfer coefficient per unit area was estimated to be 3.0 W/cm$^2$K.

Keywords