DocumentCode :
1097469
Title :
Experimental Determination of Optimal Construction of Current Limiting Transformers Using HTS Tapes and Rings
Author :
Gyore, A. ; Vajda, I. ; Meerovich, V. ; Sokolovsky, V.
Author_Institution :
Dept. of Electr. Power Eng., Budapest Univ. of Technol. & Econ., Budapest, Hungary
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
1976
Lastpage :
1980
Abstract :
The current limiting or self-limiting transformer (CLT, SLT) is a multifunctional device which combines the functions of a usual power transformer with the functions of a current limiter. Various constructions of the CLT and fault current limiters (FCL) were investigated in order to realize the optimized constructional outline. Small scale devices were investigated with one or more YBCO rings and BSCCO tape(s). The rings were placed on one or two limbs of the devices. The HTS ring was replaced with HTS tape in order to realize a new FCL construction. The main goal is to decrease the leakage field and to increase the mainfield reactance. The magnetizing current is to be reduced. The upscalability i.e. increase of the power rating is investigated as well. The CLT was investigated experimentally for both sudden short circuit and steady state (transformer) operation modes in cases of several selected configurations. The activation currents of the devices were determined in cases of sudden short circuit and transformer operation modes. The results are used to find the optimum constructional outline realization of the current limiting transformer.
Keywords :
barium compounds; bismuth compounds; fault current limiters; high-temperature superconductors; power transformers; strontium compounds; superconducting tapes; superconducting transformers; ytterbium compounds; BSCCO tape; BiSrCaCuO; HTS rings; HTS tapes; YBCO rings; YBa2Cu3O7-delta; current limiting transformers; fault current limiters; magnetizing current reduction; power transformer; self-limiting transformer; short circuit; steady state operation modes; Current limiting transformer; fault current limiter;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2017756
Filename :
5109534
Link To Document :
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