Thermal Stability of a Quasi-Isotropic Strand Made From Coated Conductors

This paper mainly presents the thermal stability of a quasi-isotropic strand composed of stacked 2G wires. The strand is fabricated by mature welding metal sheath, which is outside of the symmetrically arranged 2G wires. The sheaths may be made from different kinds of metals, such as copper and aluminum. The stability characteristics of the strands, including the calculation of the minimum quench energy (MQE) and the quench propagation velocity (QPV), are simulated by Comsol 5.0 software and tested by fabricating sample strands. The simulated results are in agreement with the experimental ones.