Title :
66 kV-class high-Tc superconducting fault current limiter magnet model coil experiment
Author :
Yazawa, Takashi ; Koyama, Hiroshi ; Tasaki, Kenji ; Kuriyama, Toru ; Nomura, Shunji ; Ohkuma, Takeshi ; Hobara, Natsuro ; Takahashi, Yoshihisa ; Inoue, Kuniaki
Author_Institution :
Toshiba Corp., Yokohama, Japan
fDate :
6/1/2003 12:00:00 AM
Abstract :
As a part of the Super-conductive AC Equipment (Super-ACE) project being performed from 2000 to 2004, an AC magnet for a fault current limiter is being developed. This research focuses on fundamental technical items essential for a 66 kV class fault current limiter magnet wound with high-Tc superconductors operating at around 65 K. These items are high current capacity, high voltage insulation and sub-cooled nitrogen cooling. This paper describes experimental results obtained for a model coil wound with four-parallel Bi2223 tape conductors. Voltage-current characteristics, equal current distribution among tape conductors and overvoltage behavior are evaluated.
Keywords :
bismuth compounds; calcium compounds; copper compounds; current distribution; fault current limiters; high-temperature superconductors; overvoltage; strontium compounds; superconducting coils; superconducting magnets; superconducting tapes; 65 K; 66 kV; AC magnet; Bi2Sr2Ca2Cu3O; Super-ACE; Super-conductive AC Equipment; current capacity; current distribution; four-parallel Bi2223 tape conductors; high-Tc superconductors; magnet model coil; overvoltage behavior; sub-cooled nitrogen cooling; superconducting fault current limiter; voltage insulation; voltage-current characteristics; Conductors; Cooling; Fault current limiters; Insulation; Magnetic devices; Nitrogen; Superconducting magnets; Superconductivity; Voltage; Wounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.812979
