Abstract
Coated conductors are subjected to short-circuit currents 10 to 30 times greater than the operating current in the use of superconducting power cables. The c and thickness of the stabilizer are considered to be nonuniformly distributed in the real manufacturing process. Thus, the coated conductor may be damaged locally by the hot spot due to the overcurrent. Therefore, it is important to clarify the local degradation characteristics of the coated conductor and determine its tolerance against the fault current in the actual operation. In a previous study, overcurrent experiments and numerical simulations on thermal stress-strain were carried out on a coated conductor with a nonuniformly distributed Ic. In this study, two samples with nonuniformly distributed copper plating thickness were tested. Numerical simulations based on the finite element method were performed to simulate the temperature and thermal stress-strain distribution caused by the overcurrent. The nonuniform thickness of the copper plating and the longitudinal length of the nonuniform area were considered as the simulation parameters.
| Original language | English |
|---|---|
| Article number | 6407834 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 23 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- Degradation
- finite element method
- short circuit current
- thermal stress
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Experiments and numerical simulations on local degradation characteristics of coated conductor due to overcurrent. / Wang, Xudong; Wang, Tao; Ishiyama, Atsushi; Yagi, Masashi; Maruyama, Osamu; Ohkuma, Takeshi.
In: IEEE Transactions on Applied Superconductivity, Vol. 23, No. 3, 6407834, 2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Experiments and numerical simulations on local degradation characteristics of coated conductor due to overcurrent
AU - Wang, Xudong
AU - Wang, Tao
AU - Ishiyama, Atsushi
AU - Yagi, Masashi
AU - Maruyama, Osamu
AU - Ohkuma, Takeshi
PY - 2013
Y1 - 2013
N2 - Coated conductors are subjected to short-circuit currents 10 to 30 times greater than the operating current in the use of superconducting power cables. The c and thickness of the stabilizer are considered to be nonuniformly distributed in the real manufacturing process. Thus, the coated conductor may be damaged locally by the hot spot due to the overcurrent. Therefore, it is important to clarify the local degradation characteristics of the coated conductor and determine its tolerance against the fault current in the actual operation. In a previous study, overcurrent experiments and numerical simulations on thermal stress-strain were carried out on a coated conductor with a nonuniformly distributed Ic. In this study, two samples with nonuniformly distributed copper plating thickness were tested. Numerical simulations based on the finite element method were performed to simulate the temperature and thermal stress-strain distribution caused by the overcurrent. The nonuniform thickness of the copper plating and the longitudinal length of the nonuniform area were considered as the simulation parameters.
AB - Coated conductors are subjected to short-circuit currents 10 to 30 times greater than the operating current in the use of superconducting power cables. The c and thickness of the stabilizer are considered to be nonuniformly distributed in the real manufacturing process. Thus, the coated conductor may be damaged locally by the hot spot due to the overcurrent. Therefore, it is important to clarify the local degradation characteristics of the coated conductor and determine its tolerance against the fault current in the actual operation. In a previous study, overcurrent experiments and numerical simulations on thermal stress-strain were carried out on a coated conductor with a nonuniformly distributed Ic. In this study, two samples with nonuniformly distributed copper plating thickness were tested. Numerical simulations based on the finite element method were performed to simulate the temperature and thermal stress-strain distribution caused by the overcurrent. The nonuniform thickness of the copper plating and the longitudinal length of the nonuniform area were considered as the simulation parameters.
KW - Degradation
KW - finite element method
KW - short circuit current
KW - thermal stress
UR - http://www.scopus.com/inward/record.url?scp=84876243213&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876243213&partnerID=8YFLogxK
U2 - 10.1109/TASC.2013.2238592
DO - 10.1109/TASC.2013.2238592
M3 - Article
VL - 23
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3
M1 - 6407834
ER -