Abstract
In the new national project, as wire and cable development, Sumitomo Electric Industries, Ltd. (SEI) is trying to develop a 66 kV/5 kArms high temperature superconducting (HTS) cable with its own REBa2Ca 3Ox (RE-123, RE = rare earth element) coated conductors. In an actual power grid, an inflow of current higher than the normal rated power (fault-current) can occur. The maximum fault-current condition is set at 31.5 kArms for 2 s for 66 kV-class transmission system in this project. Therefore, one of the technical targets in this project is to design the wires and cables to survive at this fault-current condition. As the first step, the prototype HTS cable was designed against the fault-current condition of 31.5 kArms for 2 s. The wires have copper plating as a stabilizer layer not to be damaged by over-currents. The designed HTS cable has a copper former and copper shield layers in parallel with the HTS conducting layers and HTS shield layers, respectively, to control the temperature rises in the cable core at fault-current conditions. As the second step, a sample HTS cable core was fabricated and fault-current tests were conducted to check its soundness. The temperature rises in the cable core were measured under various fault-current conditions. The critical current of the cable core was measured before and after the fault-current tests, and no deterioration in the critical current characteristics was observed. However, there was slight degradation of the n value. The investigation will be conducted, and the results will be fed back to designs of the RE-123 wires and cables.
| Original language | English |
|---|---|
| Pages (from-to) | 1576-1579 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 470 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - 2010 Nov 1 |
Fingerprint
Keywords
- Coated conductor
- Fault-current
- Power transmission cable
- Textured metal substrate
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Energy Engineering and Power Technology
- Electronic, Optical and Magnetic Materials
Cite this
Design and evaluation of 66 kV class RE-123 superconducting cable. / Minamino, T.; Ohya, M.; Yumura, H.; Masuda, T.; Nagaishi, T.; Shingai, Y.; Wang, X.; Ueda, H.; Ishiyama, Atsushi; Fujiwara, N.
In: Physica C: Superconductivity and its Applications, Vol. 470, No. 20, 01.11.2010, p. 1576-1579.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Design and evaluation of 66 kV class RE-123 superconducting cable
AU - Minamino, T.
AU - Ohya, M.
AU - Yumura, H.
AU - Masuda, T.
AU - Nagaishi, T.
AU - Shingai, Y.
AU - Wang, X.
AU - Ueda, H.
AU - Ishiyama, Atsushi
AU - Fujiwara, N.
PY - 2010/11/1
Y1 - 2010/11/1
N2 - In the new national project, as wire and cable development, Sumitomo Electric Industries, Ltd. (SEI) is trying to develop a 66 kV/5 kArms high temperature superconducting (HTS) cable with its own REBa2Ca 3Ox (RE-123, RE = rare earth element) coated conductors. In an actual power grid, an inflow of current higher than the normal rated power (fault-current) can occur. The maximum fault-current condition is set at 31.5 kArms for 2 s for 66 kV-class transmission system in this project. Therefore, one of the technical targets in this project is to design the wires and cables to survive at this fault-current condition. As the first step, the prototype HTS cable was designed against the fault-current condition of 31.5 kArms for 2 s. The wires have copper plating as a stabilizer layer not to be damaged by over-currents. The designed HTS cable has a copper former and copper shield layers in parallel with the HTS conducting layers and HTS shield layers, respectively, to control the temperature rises in the cable core at fault-current conditions. As the second step, a sample HTS cable core was fabricated and fault-current tests were conducted to check its soundness. The temperature rises in the cable core were measured under various fault-current conditions. The critical current of the cable core was measured before and after the fault-current tests, and no deterioration in the critical current characteristics was observed. However, there was slight degradation of the n value. The investigation will be conducted, and the results will be fed back to designs of the RE-123 wires and cables.
AB - In the new national project, as wire and cable development, Sumitomo Electric Industries, Ltd. (SEI) is trying to develop a 66 kV/5 kArms high temperature superconducting (HTS) cable with its own REBa2Ca 3Ox (RE-123, RE = rare earth element) coated conductors. In an actual power grid, an inflow of current higher than the normal rated power (fault-current) can occur. The maximum fault-current condition is set at 31.5 kArms for 2 s for 66 kV-class transmission system in this project. Therefore, one of the technical targets in this project is to design the wires and cables to survive at this fault-current condition. As the first step, the prototype HTS cable was designed against the fault-current condition of 31.5 kArms for 2 s. The wires have copper plating as a stabilizer layer not to be damaged by over-currents. The designed HTS cable has a copper former and copper shield layers in parallel with the HTS conducting layers and HTS shield layers, respectively, to control the temperature rises in the cable core at fault-current conditions. As the second step, a sample HTS cable core was fabricated and fault-current tests were conducted to check its soundness. The temperature rises in the cable core were measured under various fault-current conditions. The critical current of the cable core was measured before and after the fault-current tests, and no deterioration in the critical current characteristics was observed. However, there was slight degradation of the n value. The investigation will be conducted, and the results will be fed back to designs of the RE-123 wires and cables.
KW - Coated conductor
KW - Fault-current
KW - Power transmission cable
KW - Textured metal substrate
UR - http://www.scopus.com/inward/record.url?scp=77957897489&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957897489&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2010.05.165
DO - 10.1016/j.physc.2010.05.165
M3 - Article
VL - 470
SP - 1576
EP - 1579
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 20
ER -