- Celilo Converter Station
The Celilo Converter Station, built in 1970 and owned and operated by the
Bonneville Power Administration, is the northern terminus of the Pacific DC Intertie, near The Dalles, Oregon, in the United States.
Until September 2001, the Celilo Converter Station was partially open to the
publicand included displays describing the history of DC transmission and the Pacific Intertie, but securityconcerns have closed this facility to the public.
The Celilo Converter Station was originally configured with six groups of six-pulse
mercury arc valves with a blocking voltageof 133 kV each (for a total of +/-400 kV) and a maximum current of 2,000 amperes. cite web
url = http://www.transmission.bpa.gov/PlanProj/Transmission_Projects/Completed-TransP/Celilo/4-15-03FactSheet.pdf
title = Celilo Modernization Project
Bonneville Power Administration
date = 2003-04-15
accessdate = 2006-11-28] [cite web
url = http://www.ieee-rs.org/Events/CeliloDC/
title = Tour of Celilo DC Substation and the Dalles Dam
accessdate = 2006-11-28]
In 2004, the mercury arc valves groups were replaced with light-triggered thyristor groups to eliminate the environmental risks of mercury and to reduce the maintenance costs of the obsolete mercury arc valves.
There was also a DC test facility for testing
high voltageequipment nearby (now abandoned, soon to be demolished). At the end of the 1960s, a test transmission line for 1,333 kV was erected in order to test equipment for this voltage, which was to be used for a planned HVDC from Celilo Converter Station to Hoover Dam. This line, however, was never built.
Sylmar Converter Station
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