HVDC at Square Butte extends solid-state experience

Journal Article · Mon Oct 01 04:00:00 EDT 1973 · Elec. Light Power, T/D Ed., v. 51, no. 20, pp. 50-51

OSTI ID:4315441

Ryder, F; Marchetti, R; Fink, J L

The Square Butte project will be nated at plus or minus 250 kV dc 1000 amps. The 500-Mw system will interconnect the power generating complex Center, ND, near Bismarck, with Duluth, Ml, a distance of 456 miles. The project is scheduled for commercial operation in May of 1977. Design work is now underway for the terminal equipment. The system will be bi-polar, with provision for metallic return in case of a prolonged outage of one pole. Filters are divided so that one pole can be openated independently of the other, and valve groups are connected in the 12-pulse arrangement, thus minimizing harmonic generation and reducing the size of the required filters by nearly two to one. Comparisons are made with the Eel River asynchronous tie. Simpliflcation at Square Butte eliminates synchronous condensers. Solid state valves are employed and do not require external damping circuits as in the case with mercury-arc. (MCW)

• Research Organization: New Brunswick Electric Power Commission, NJ
• NSA Number: NSA-29-028819
• OSTI ID: 4315441
• Journal Information: Elec. Light Power, T/D Ed., v. 51, no. 20, pp. 50-51, Journal Name: Elec. Light Power, T/D Ed., v. 51, no. 20, pp. 50-51; ISSN EPTDA
• Country of Publication: Country unknown/Code not available
• Language: English

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