Bi-2223 and Bi-2212 tubes for small fault current limiters

The superconducting fault current limiters (SFCL) can be used to limit the short-circuit current level in electrical transmission and distribution networks. In one concept of SFCL-serial resistive limiter, the superconductor is inserted in the circuit directly. During a fault, the fault current push...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2004-06, Vol.14 (2), p.851-854
Main Authors: Janowski, T., Stryczewska, H.D., Kozak, S., Kondratowicz-Kucewicz, B., Wojttasiewicz, G., Kozak, J., Surdacki, P., Malinowski, H.
Format: Article
Language:English
Subjects:
Applied sciences
BISMUTH OXIDE
Circuit faults
Connection and protection apparatus
COPPER OXIDE
Critical current
Current limiters
ELECTRIC CIRCUITS
Electric power lines
Electric resistance
ELECTRICAL CONDUCTIVITY
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fault current limiters
Fault currents
Faults
IMPEDANCE
Iron
Magnetic fields
Power networks and lines
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Switches
Transformer cores
Transformers and inductors
TUBE
Tubes
WINDING
Yttrium barium copper oxide
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Summary:The superconducting fault current limiters (SFCL) can be used to limit the short-circuit current level in electrical transmission and distribution networks. In one concept of SFCL-serial resistive limiter, the superconductor is inserted in the circuit directly. During a fault, the fault current pushes the superconductor into a resistive state and resistance, which limits the fault current, appears in the circuit. Another concept-inductive limiter works like transformer with shorted superconducting secondary winding. The impedance of this limiter under standard operation conditions is nearly zero, since the zero impedance of the secondary superconducting winding is reflected to the primary. In the event of a fault, the resistance in the secondary winding is reflected into the circuit and limits the fault current. The small inductive type SFCL's with Bi-2223 tubes with critical current=112 A, 625 A, and 1210 A (at 77 K and self-magnetic field) and various numbers of primary winding turns are presented with their limitation coefficients. The resistive type SFCL based on Bi-2212 tube with critical current=125 A (at 77 K and self-magnetic field) is presented too.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2004.830298