TY - JOUR
T1 - Experimental tests on a superconducting fault current limiter using three-strand MgB 2 wire
AU - Pei, Xiaoze
AU - Smith, Alexander C.
AU - Husband, Mark
AU - Rindfleisch, Matthew
PY - 2012
Y1 - 2012
N2 - Magnesium diboride MgB 2 in simple round wire form has shown significant potential to be a low-cost resistive superconducting fault current limiter (SFCL). The commercial exploitation of MgB 2 SFCLs for typical distribution network voltages requires a considerable scale-up of the current-carrying capability of MgB 2 wire. The two obvious options to achieve this are to increase the wire size and use multifilament wire and/or use multiple wire strands. This paper assesses the current capacity for multi-strand wire and presents results of initial tests on a three-strand MgB 2 demonstrator SFCL coil. Three strands of monofilament MgB 2 wire were braided together to form a single multi-strand wire. The wire was fabricated, wound on a ceramic former and heat treated by Hyper Tech Research, Inc. One of the key performance aspects of this type of wire arrangement is ensuring each strand of wire carries the same current. This paper demonstrates the potential for increasing the current capacity of SFCL using multi-strand MgB 2 wire to that required for distribution network levels. The paper includes a detailed analysis of the results and the implications for the practical design of commercial SFCLs.
AB - Magnesium diboride MgB 2 in simple round wire form has shown significant potential to be a low-cost resistive superconducting fault current limiter (SFCL). The commercial exploitation of MgB 2 SFCLs for typical distribution network voltages requires a considerable scale-up of the current-carrying capability of MgB 2 wire. The two obvious options to achieve this are to increase the wire size and use multifilament wire and/or use multiple wire strands. This paper assesses the current capacity for multi-strand wire and presents results of initial tests on a three-strand MgB 2 demonstrator SFCL coil. Three strands of monofilament MgB 2 wire were braided together to form a single multi-strand wire. The wire was fabricated, wound on a ceramic former and heat treated by Hyper Tech Research, Inc. One of the key performance aspects of this type of wire arrangement is ensuring each strand of wire carries the same current. This paper demonstrates the potential for increasing the current capacity of SFCL using multi-strand MgB 2 wire to that required for distribution network levels. The paper includes a detailed analysis of the results and the implications for the practical design of commercial SFCLs.
KW - Cryogenics
KW - MgB multi-strand
KW - MgB wire
KW - superconducting fault current limiter
UR - http://www.scopus.com/inward/record.url?scp=84862560399&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1109/TASC.2011.2175349
U2 - 10.1109/TASC.2011.2175349
DO - 10.1109/TASC.2011.2175349
M3 - Article
AN - SCOPUS:84862560399
SN - 1051-8223
VL - 22
SP - 5600405
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3
ER -