TY - JOUR
T1 - Transient stability characteristics of parallel-connected YBCO coated conductors for power transmission cables
AU - Ishiyama, Atsushi
AU - Iwata, Takuya
AU - Ueda, Hiroshi
AU - Mukoyama, Shinichi
AU - Shiohara, Yuh
N1 - Funding Information:
Manuscript received August 24, 2006. This work was supported by NEDO as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications. A. Ishiyama, T. Iwata, and H. Ueda are with the Department of Electrical Engineering and Bioscience, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan (e-mail: atsushi@waseda.jp). S. Mukoyama is with Furukawa Electric Co., Ltd., Ecology & Energy Laboratory, Ichihara 290–8555, Japan. Y. Shiohara is with International Superconductivity Technology Center, Superconductivity Research Laboratory, Koto-ku, Tokyo 135-0062, Japan (e-mail: shiohara@istec.or.jp). Digital Object Identifier 10.1109/TASC.2007.898005
PY - 2007/6
Y1 - 2007/6
N2 - YBCO coated conductors are expected to be used in future high-temperature superconductor applications. For the application to power transmission cables, a number of YBCO coated conductors would be connected in parallel and they might be subjected to short-circuit fault currents. Therefore, in order to examine the stability and feasibility of YBCO power transmission cables, it is important to investigate the normal-zone initiation and propagation characteristics of the YBCO tapes and demonstrate the redistribution of transport current and the electromagnetic coupling between YBCO tapes during a short-circuit fault current. In this study, over-current pulses were applied to the two parallel-connected YBCO sample tapes in a liquid nitrogen bath, and the characteristics of the normal-zone initiation and propagation were examined experimentally. Additionally, we also show the experimental results of the redistribution of the transport current between parallel-connected YBCO sample tapes.
AB - YBCO coated conductors are expected to be used in future high-temperature superconductor applications. For the application to power transmission cables, a number of YBCO coated conductors would be connected in parallel and they might be subjected to short-circuit fault currents. Therefore, in order to examine the stability and feasibility of YBCO power transmission cables, it is important to investigate the normal-zone initiation and propagation characteristics of the YBCO tapes and demonstrate the redistribution of transport current and the electromagnetic coupling between YBCO tapes during a short-circuit fault current. In this study, over-current pulses were applied to the two parallel-connected YBCO sample tapes in a liquid nitrogen bath, and the characteristics of the normal-zone initiation and propagation were examined experimentally. Additionally, we also show the experimental results of the redistribution of the transport current between parallel-connected YBCO sample tapes.
KW - Over-current pulse
KW - Parallel-connected YBCO tapes
KW - Power transition cable
KW - Transient stability
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U2 - 10.1109/TASC.2007.898005
DO - 10.1109/TASC.2007.898005
M3 - Article
AN - SCOPUS:34547402046
SN - 1051-8223
VL - 17
SP - 1672
EP - 1675
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2
ER -