Construction and properties of a 1-m long Nb/sub 3/Ge-based ac superconducting power transmission cable

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:7173807

Thompson, J D; Maley, M P; Newkirk, L R; Valencia, F A; Carlson, R V; Morgan, G H

A prototype 1-m long, coaxial ac superconducting power transmission cable utilizing Nb/sub 3/Ge-clad tapes was constructed. Tapes up to 20-m long were produced by pulling 25-..mu..m thick by 0.64-cm wide copper substrates through a continuous coating chemical vapor deposition reactor. Nb/sub 3/Ge layer thicknesses in the range 3 to 5 ..mu..m were deposited on both surfaces and around the edges of the substrate. A total of 50 m of Nb/sub 3/Ge-coated tapes was incorporated in this cable, with all tapes exhibiting critical current densities J/sub c/ at 14/sup 0/K greater than or equal to 1.8 x 10/sup 6/ A/cm/sup 2/. The cable was fabricated after the BNL double-helix design. Losses measured in the cable were found to be high, approx. 1 mW/cm/sup 2/ at 500 rms A/cm, and comparable to losses in similar 1-m Nb/sub 3/Sn-based cables. It is believed that these high losses are not a result of material dependent properties.

• Research Organization: Los Alamos Scientific Lab., NM (USA); Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7173807
• Report Number(s): BNL-28438; CONF-800980-30
• Country of Publication: United States
• Language: English

Related Subjects

200301 -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
200303* -- Power Transmission & Distribution-- Superconducting & Cryogenic Systems-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
ALLOYS
CABLES
CONDUCTOR DEVICES
DATA
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ENERGY LOSSES
EQUIPMENT
EXPERIMENTAL DATA
FABRICATION
GERMANIUM ALLOYS
INFORMATION
LOSSES
NIOBIUM ALLOYS
NUMERICAL DATA
PERFORMANCE
POWER LOSSES
POWER SYSTEMS
POWER TRANSMISSION
SUPERCONDUCTING CABLES