In:
Superconductor Science and Technology, IOP Publishing
Abstract:
Due to the increasing demand of high-current capacity of Superconducting energy storage magnet system (SMES ) for power grid, there is growing attention in the energy field towards improving the current-carrying capacity of SMES wound with Conductor on Round Core (CORC) cables. However, the AC loss heat deposition of the CORC cable during fast charge and discharge process can significantly impact the safe operation of SMES. The CORC cable is prepared with dozens of ReBCO tapes spirally wound on the copper tubes. Adjusting the winding angles of tapes will cause changes in the current distribution to ReBCO tapes thus leading to differences in AC losses. Therefore, this paper focuses on investigating the influence of winding angels of each layer tapes on the AC loss. variable angles angles reduce the current of the outmost tapes which is the area that contributes the most to ac loss.In simulation, the AC loss of the CORC cable with variable angles (3×11, 25°~39.3°) was 25% lower than that with fixed angles (3×11, 45°). In the experiment, the AC loss of the CORC cable with variable angles (4×12, 25°~40°) was 25% lower than that with fixed angles (3×11, 45°). These findings demonstrate a significant downward trend in AC losses for the CORC cable with variable angles, providing valuable insights for the application of CORC cables in SMES systems.
Type of Medium:
Online Resource
ISSN:
0953-2048
,
1361-6668
DOI:
10.1088/1361-6668/acff8b
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2023
detail.hit.zdb_id:
1361475-7
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