A horizontal cyrogenic bushing for the termination of an AC superconducting power transmission line

Conference · Fri Jan 01 04:00:00 EST 1982 · Adv. Cryog. Eng.; (United States)

OSTI ID:6202534

Morgan, G H; Jensen, J E; McNerney, A J; Minati, K F; Schmidt, R D

Three combined voltage and current bushing were tested. Design considerations are described as well as the construcion. The axial section of the horizontal cryogenic bushing is illustrated. Performance is described in terms of test facilities, voltage test bushings, high current leads, and current. Tests found that vacuum leaks and refrigerator capacity have limited the helium density attained and prevented complete voltage tests while cold. The bushings attained satisfactory PDI and excellent impulse breakdown when tested warm in SF/sub 6/. The excessive collant flow required in the second of the three led to lengthening the temperature transition region in the third. The coolant flows required are 40% greater than expected. Possible cause is a radial curing void under the outer conductor which will be backfilled in the next bushing. The expoxy filler presently used results in a rather high thermal conductance, and a new formulation may be tried.

• Research Organization: Brookhaven National Laboratory, Upton, NY
• OSTI ID: 6202534
• Report Number(s): CONF-810835-
• Conference Information: Journal Name: Adv. Cryog. Eng.; (United States) Journal Volume: 27
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AC SYSTEMS
BUSHINGS
CABLES
CONDUCTOR DEVICES
COOLING
DESIGN
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FABRICATION
PERFORMANCE
POWER SYSTEMS
SUPERCONDUCTING CABLES