Installation and operation of the Southwire 30-meter high-temperature superconducting power cable

Author

Stovall, J.P. ; Demko, J.A. ; Fisher, P.W. ; Gouge, M.J. ; Lue, J.W. ; Sinha, U.K. ; Armstrong, J.W. ; Hughey, R.L. ; Lindsay, D. ; Tolbert, J.C.

Author_Institution

Oak Ridge Nat. Lab., TN, USA

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2467

Lastpage

2472

Abstract

Southwire Company has installed, tested and is operating the first real-world application of a high-temperature superconducting cable system at its headquarters in Carrollton, GA, USA. The cable is powering three Southwire manufacturing plants, marking the first time a company has successfully made the difficult transition front laboratory to practical field application of an HTS cable. The cables are rated at 12.4-kV, 1250-A, 60 Hz and are cooled with pressurized liquid nitrogen at temperatures from 70-80 K. Before placing the cables into service, extensive offline electrical testing was performed including voltage withstand, measurement of DC critical current, extended load current testing, rated voltage testing and partial discharge measurement. The cables were energized on Jan. 5, 2000 for online testing and operation, and by the end of August 2000, had provided 100% of the customer load for 2164 hours

Keywords

cable laying; electric current measurement; high-temperature superconductors; installation; insulation testing; partial discharge measurement; power cable insulation; power cable testing; superconducting cables; voltage measurement; 12.4 kV; 1250 A; 2164 h; 30 m; 60 Hz; 70 to 80 K; DC critical current measurement; extended load current testing; high-temperature superconducting power cable; offline electrical testing; partial discharge measurement; pressurized liquid nitrogen cooling; rated voltage testing; voltage withstand; Current measurement; High temperature superconductors; Laboratories; Manufacturing; Nitrogen; Partial discharge measurement; Performance evaluation; Superconducting cables; System testing; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920363

Filename

920363