Long Term Performance Test of KEPCO HTS Power Cable

• Published in: IEEE transactions on applied superconductivity Vol. 19; no. 3; pp. 1782 - 1784
• Main Authors: Yang, Hyung Suk, Kim, Dong Lak, Sohn, Song Ho, Lim, Ji Hyun, Choi, Ha Ok, Choi, Yeon Suk, Lee, Byoung Seob, Jung, Won Moog, Ryoo, Hee Suk, Hwang, Si Dole
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.06.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: AC loss; Air conditioning; Applied sciences; Cooling; Cooling systems; Design. Technologies. Operation analysis. Testing; Electric connection. Cables. Wiring; Electric power generation; Electrical engineering. Electrical power engineering; Electromagnets; Electronics; Exact sciences and technology; High temperature superconductors; HTS power cable system; Integrated circuits; Liquid nitrogen; Nitrogen; Operating temperature; Performance evaluation; Performance loss; performance test; Performance tests; Power cables; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Superconducting cables; Superconductivity; System testing; Thermal loading; Underground power cables; Various equipment and components; Asia; Korea; Performance evaluation; Power cables; Cooling by liquid; Thermal management (packaging); Long term test; HTS power cable system; Thermal cycle; Heat loss; Thermal dissipation; performance test; Thermal stability; Closed systems; Electric power; Cooling system; Superconducting cable; Thermal test; Reliability; AC losses; High temperature superconductor; Room temperature; AC loss
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/TASC.2009.2019059

A project for verification of HTS power cable system by KEPCO (Korea Electric Power Corporation) was started in 2002. The HTS power cable system of 100 m, 22.9 kV, 1.25 kA has been installed and tested at the KEPCO's Gochang power testing center in Korea since 2006. A liquid nitrogen decompression cooling system with a cooling capacity of 3 kW at 66 K and a closed-circulation system of subcooled liquid nitrogen were employed for this purpose. Several performance tests for the HTS power cable system, such as cooling capacity, electrical loading, heat load, AC loss and temperature stability, were performed at operating temperature of 66.4 K. Thermal cycle test including cool-down to liquid nitrogen temperature and warming up to room temperature, was also performed to investigate thermal cycle influences for 8 times. The reliability through the several demonstration tests over than 8,000 hours was proved.