Sun-Kyoung Ha

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A tri-axial HTS power cable has been proposed and developed to reduce the number of HTS wires because it has copper shield instead of HTS shield. However, it has a drawback which is an inherent imbalance problem due to an asymmetry configuration in the cable. The authors designed a 22.9 kV/50 MVA class tri-axial HTS cable. The inherent imbalance problem of(More)
The effects of inhomogeneous critical current (I<sub>c</sub>) and n-value on the degradation or permanent damage of REBCO coated conductors (CCs) were investigated through repetitive quench tests and overcurrent tests. In the repetitive quench tests, the I<sub>c</sub> values of the REBCO CC samples at the sections with the high n-values were degraded easily(More)
Tri-axial high-temperature superconducting (HTS) power cables are being developed to maximize their advantages such as reduced amount of HTS wires, a low-leakage magnetic field, and compactness compared with the different types of HTS power cables. The authors designed a 22.9 kV/50 MVA-class tri-axial HTS power cable core to apply to the distribution system(More)
The characteristics of the tri-axial high temperature superconducting (HTS) power cable are different from a general copper cable, depending on whether the cable is under steady state or transient state, which is caused by quench. Before applying the tri-axial HTS power cable to a real utility, the system should be analyzed using certain simulation tools in(More)
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