DocumentCode :
1482163
Title :
Quenching behaviour of superconductors in an inductive fault current limiter
Author :
Tan, Yew C. ; Evans, Peter D.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Volume :
11
Issue :
1
fYear :
2001
fDate :
3/1/2001 12:00:00 AM
Firstpage :
2495
Lastpage :
2498
Abstract :
Earlier papers introduced a new form of inductive superconducting fault current limiter (FCL) in which the primary and secondary windings were interleaved symmetrically, producing current sharing in the multiplicity of secondary coils. A new FCL which employs similar structure but in a higher rating has been designed and constructed. The new FCL, has eight series connected primary coils interleaving with at least eight isolated secondary superconductor rings around a toroidal iron core. Investigation of this FCL when carrying a different number of superconductor rings has showed the ability to reduce the leakage fields around the windings hence improving the current rating of the FCL by increasing the number of superconductor rings in the FCL. However, being isolated, each superconductor ring has a different switching profile as a result of the development of normal regime resistance at different current values. A new way of characterising this nonuniform quenching behaviour of the superconductors in the FCL as the fault occurs is reported
Keywords :
fault current limiters; magnetic leakage; superconducting devices; windings; current sharing; inductive fault current limiter; leakage fields reduction; nonuniform quenching behaviour; normal regime resistance; primary windings; quenching behaviour; secondary windings; superconducting fault current limiter; superconductor rings; superconductors; switching profile; symmetrically interleaved windings; toroidal iron core; Conductivity; Current density; Current limiters; Fault current limiters; High temperature superconductors; Substrates; Superconducting coils; Superconductivity; Telephony; Toroidal magnetic fields;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/77.920371
Filename :
920371
Link To Document :
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