Progress on the Performance Test of KEPCO HTS Power Cable

Author

Choi, Y.S. ; Kim, D.L. ; Yang, H.S. ; Sohn, S.H. ; Lim, J.H. ; Hwang, S.D.

Author_Institution

Korea Basic Sci. Inst., Daejeon, South Korea

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

1034

Lastpage

1037

Abstract

The Korea Electric Power Corporation (KEPCO) HTS power cable has been successfully installed and operated for feasible confirmation since 2006 at Gochang power test center. The 3-phase 100 m long HTS power cable with 22.9 kV/1.25 kA was manufactured and cooled by subcooled liquid nitrogen. At the beginning stage, the cooling system was composed of a liquid nitrogen decompression cooling unit. No major fault has been observed during long term operating test. As a next step, cooling system was modified that a cryocooler was employed, resulting in the total cooling capacity of 4 kW at liquid nitrogen temperature. In this paper, the progress on the performance test of HTS power cable is reported. Temperature as well as pressure in the system is discussed with respect to the supplied current levels. Also, the installation of hybrid cooling system for real power grid application is described.

Keywords

cooling; high-temperature superconductors; power cable testing; power grids; KEPCO HTS power cable; Korea Electric Power Corporation; cryocooler; hybrid cooling system; liquid nitrogen decompression cooling unit; liquid nitrogen temperature; performance test; power 4 kW; power grid application; size 100 m; subcooled liquid nitrogen; Cooling; Heating; High temperature superconductors; Nitrogen; Power cables; Superconducting cables; Temperature distribution; Cooling system; high temperature superconductor; power cable;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2093496

Filename

5675707