Square Butte's HVDC Project sends coal by wire 456 miles

Journal Article · Wed Jun 01 04:00:00 EDT 1977 · Electr. Light Power (Boston); (United States)

OSTI ID:7218955

High-voltage direct-current (HVDC) transmission 456 miles between Center, N. D. and Duluth, Minn. will demonstrate the feasibility of this system in areas of high-density power demand, remote power plants, and environmental constraints. Alternating current generated at lignite fields near Center is converted to direct current (dc) at the mine mouth; the Arrowhead Terminal at Duluth converts back to ac. The choice of dc was made because a dc line responds to fast control changes and gives greater stability. Other considerations were the lower cost of transmitting current rather than transporting coal and the narrower rights of way required for dc over alternating current (ac) transmission. Air-cooled, air-insulated valves at the terminals will improve reliability. (DCK)

• OSTI ID: 7218955
• Journal Information: Electr. Light Power (Boston); (United States), Journal Name: Electr. Light Power (Boston); (United States) Vol. 55:6; ISSN ELLPA
• Country of Publication: United States
• Language: English

Related Subjects

200302 -- Power Transmission & Distribution-- DC Systems-- (1989-)
24 POWER TRANSMISSION AND DISTRIBUTION
29 ENERGY PLANNING, POLICY, AND ECONOMY
296002* -- Energy Planning & Policy-- Electric Power Transmission & Distribution-- (-1989)
BROWN COAL
CARBONACEOUS MATERIALS
COAL
COST
DC SYSTEMS
DEMONSTRATION PROGRAMS
ELECTRIC POWER
ENERGY SOURCES
ENVIRONMENTAL IMPACTS
FOSSIL FUELS
FUELS
HVDC SYSTEMS
LAND USE
LIGNITE
POWER
POWER DEMAND
POWER DISTRIBUTION
POWER SYSTEMS
POWER TRANSMISSION
POWER TRANSMISSION LINES
RELIABILITY
TRANSPORT