LADWP Takes Action After DC Line Failure

High wind conditions knocked down several 500-kV DC transmission towers between Oregon and California in March 2010. The extremely high winds caused a cascading effect that took down 11 towers of transmission line near Haiwee, CA. The line is operated by Los Angeles Department of Water Power (LADWP)...

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Bibliographic Details
Published in:Transmission & Distribution World 2012-01, Vol.64 (1), p.64D-64F
Main Authors: Fleming, Mark, McCabe, Keith, Siewert, David
Format: Magazinearticle
Language:English
Subjects:
Archaeology
Direct current
Electric power lines
Emergency preparedness
Northwest
Repair & maintenance
Repairing
Southern California
Storm damage
Storms
Strategic management
Towers
Utilities
Wind power generation
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Summary:High wind conditions knocked down several 500-kV DC transmission towers between Oregon and California in March 2010. The extremely high winds caused a cascading effect that took down 11 towers of transmission line near Haiwee, CA. The line is operated by Los Angeles Department of Water Power (LADWP) on behalf of itself, Southern California Edison and the cities of Burbank, Glendale and Pasadena. The DC line affected by the wind storm was built in the 1960s to move power between the Pacific Northwest and Southern California. As soon as the towers went down, the LADWP field crews were able to quickly mobilize to the site, assess the damage, and begin making repairs. It took a total of 24 days to get the line back in service. Because the utility already had sections and towers at different locations ready to go, it reduced the restoration time and allowed the linemen to get the line back in place sooner than originally estimated.
ISSN:1087-0849