A description is given of a basic supercritical refrigerator. The present status of the cable enclosure and the types of cooling schemes being considered are presented with some examples of laboratory results and computer analysis. (MOW)
ABS>Research is being conducted at Brookhaven National Laboratory to develop a superconducting ac cable system leading to the construction of a 1/2 mile model cable of 200 MVA capacity at Brookhaven and a cable of larger (>2000 MVA) capacity for test at a utility testing site. It is a coaxial cable of flexible design using Nb/sub 3/Sn superconductor, and a tape wound dielectric, helium impregnated, of a material yet to be determined. The research development is reported on the dielectric materials, cryogenic enclosure, refrigeration, and superconducting materials. (MCW)
The design of a test facility for superconducting power transmission cables is described. The cryogenic portion consists of a screw compressor, cold box with turbine expanders, 100 m of transfer line and 100 m of cable enclosure. The complete cryogenic system has been operated and performance figures are given. The cables will be operated at voltage and current by electrical equipment which has mostly been installed and tested. The interface between the low-temperature cables and the outside are four termination bushings which are under construction; a brief description is included.
Date: January 1, 1980
Creator: Forsyth, E B; Gibbs, R J; Jensen, J E & McNernery, A J