1200 kV semi-flexible gas-insulated transmission program, February 1984. Volume one. Final report

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

OSTI ID:6972269

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 (28 in.) internal diameter, 4 mm (0.16 in.) wall, 3004 aluminum enclosure with 19 mm (0.75 in.) deep corrugations at a pitch of 70 mm (2.75 in.) was shown adequate for internal and external pressure. A field installation centerline bending radius of 15 m (50 ft) was demonstrated. Dielectric characteristics of the compact 1200 kV design with SF/sub 6/ at 440 kPa (50 psig) 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 the performance criteria established. The electrical and mechanical parameters of the 1200 kV and a 550 kV design are reported. These meet the performance and cost objectives.

• Research Organization: Westinghouse Electric Corp., Trafford, PA (USA). Power Equipment Div.
• DOE Contract Number: AC01-78ET29046
• OSTI ID: 6972269
• 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
DIELECTRIC PROPERTIES
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUIPMENT
FLUORIDES
FLUORINE COMPOUNDS
GAS-INSULATED CABLES
HALIDES
HALOGEN COMPOUNDS
MANUFACTURING
PHYSICAL PROPERTIES
POWER TRANSMISSION LINES
SULFUR COMPOUNDS
SULFUR FLUORIDES