1200 kV semi-flexible gas-insulated transmission program. Volume 1. Final report

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:5915046

Dale, S J

An SF/sub 6/ insulated semi-flexible transmission line is described which uses a corrugated aluminum enclosure to reduce cost and provide flexibility. Mechanical behavior was evaluated using finite element computer analysis, bending, hydrostatic, thermal, vacuum and fatigue tests. A 711 mm ID, 4 mm wall, 3004 aluminum enclosure with 19 mm deep corrugations at a pitch of 70 mm was adequate for internal and external pressure. A field installation centerline bending radius of 15 m was demonstrated. Dielectric characteristics of the compact 1200 kV design with SF/sub 6/ at 440 kPa was established through detailed field plotting and scale model tests. High voltage tests on 550 kV and 1200 kV prototypes verified that a design using a smooth conductor with discrete flexible elements met performance criteria. The electrical and mechaical parameters of the 1200 kV and a 550 kV design meet performance and cost objectives.

• Research Organization: Westinghouse Electric Corp., Trafford, PA (USA). Power Equipment Div.
• DOE Contract Number: AC01-78ET29046
• OSTI ID: 5915046
• Report Number(s): DOE/ET/29046-T2; ON: DE86008524
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
CABLES
CONDUCTOR DEVICES
DESIGN
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATION
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
GAS-INSULATED CABLES
HALIDES
HALOGEN COMPOUNDS
POWER TRANSMISSION LINES
SULFUR COMPOUNDS
SULFUR FLUORIDES
TESTING