Ls Cable Ltd.

Ls Cable & System Ltd.

Choon Dong Kim

Su Kil Lee

Hyun Man Jang

Chang Youl Choi

Seok Hern Jang

Heo Gyung Sung

Keun Tae Lee

Yang Hoon Kim

A termination structure for a superconducting cable is described. The termination structure for a superconducting cable includes a first tube including a conductive rod therein to form a room temperature section, a second tube including a conductive rod therein to form a temperature gradient section, and a spacer provided between the first and second tubes, the spacer including a conductive connector configured to connect the conductive rods inside the first and second tubes to each other. The first and second tubes are joined to be separable from each other.

Termination structure for superconducting cable

The arrangement method of superconducting wires of a superconducting cable, includes: in a case where a refrigerator is installed at one of terminal structures provided on both sides of a superconducting cable, and a cooling fluid is passed through the superconducting cable by a pump for cooling, setting the numbers of superconducting wires of sections of the superconducting cable installed between the terminal structures on both the sides to be different depending to temperatures of the sections, wherein the numbers of superconducting wires are increased from the section of the superconducting cable having the lowest temperature to the section thereof having the highest temperature while maintaining a current-carrying capability.

Arrangement method of superconducting wires of a superconducting cable

A terminal apparatus for a superconducting cable system connects an overhead transmission cable or power appliance such as a breaker in an ambient temperature state to a superconducting cable through which power is transmitted at a cryogenic temperature. The terminal apparatus has: a refrigerant tub which is connected to the end of a superconducting cable and is filled with a refrigerant; a vacuum heat insulating container that surrounds the exterior of the refrigerant tub; a current lead having one end connected to the end portion of the superconducting cable and the other end connected to the overhead transmission cable or power appliance through the refrigerant tub and the vacuum heat insulating container; and a superconducting fault current limiter installed at a center portion of the current lead in the interior of the refrigerant tub to limit fault current. As the superconducting fault current limiter is built in the terminal apparatus, the terminal apparatus itself can play the role of a fault current limiter too. Hence, the terminal apparatus can protect a superconducting cable from a fault current directly by limiting the fault current flowed into the superconducting cable when a power transmission fault occurs.

Terminal apparatus with built-in fault current limiter for superconducting cable system

Growing community of inventors

Gunpo-si, South Korea

Choon Dong Kim