Recent progress on system studies for long distance power transmission

Conference · Thu Jan 01 04:00:00 EST 1976

OSTI ID:7322478

Forsyth, E B

Two possible applications of helium-cooled underground cables for power transmission were studied to determine network characteristics and estimated costs. The first involved power transmission at 345 kV from a Long Island nuclear power plant to a substation 43 miles away. The second appication examined the feasibility of a 350 mi-long 550 kV transmission line from Western Pennsylvania to Allentown and Philadelphia. For both systems computer simulations were used to study operating characteristics. A detailed cost analysis was made. The Long Island study concluded that helium-cooled cables were well suited for high-power transmission in a suburban area, that such a system using two trenches and separate refrigerator stations would be more reliable than a single trench system, and that cost could be optimized by using a less expensive cryogenic envelope. The Pennsylvania study showed that the helium-cooled cable was technically capable of performing as well as overhead power lines, but the cost of the underground cryogenic system is so much greater that such a system could not be economically justified for long distance transmission across open country-side. (LCL)

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 7322478
• Report Number(s): BNL-21952; CONF-760871-1
• Country of Publication: United States
• Language: English

Related Subjects

200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CABLES
CENTRAL REGION
COMPARATIVE EVALUATIONS
CONDUCTOR DEVICES
COST
CRYOGENIC CABLES
CRYOGENIC FLUIDS
EHV AC SYSTEMS
ELECTRIC CABLES
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FEASIBILITY STUDIES
FLUIDS
HELIUM
MID-ATLANTIC REGION
NEW YORK
NONMETALS
NORTH AMERICA
OVERHEAD POWER TRANSMISSION
PENNSYLVANIA
POWER SYSTEMS
POWER TRANSMISSION
POWER TRANSMISSION LINES
RARE GASES
UNDERGROUND POWER TRANSMISSION
USA