ABB has won a $93 million order to refurbish a high-voltage direct current (HVDC) transmission system in California.
Under the terms of the contract awarded by the Los Angeles Department of Water and Power, ABB will design, manufacture and install a 3,100MW system to overhaul the current installation located at Sylmar near Los Angeles. ABB will deliver new converter transformers, HVDC thyristor valves and control and protection equipment.
The current system, one of two major electricity interconnections linking southern California to the northwestern US, is now reaching the end of its operational life, and was damaged by an earthquake in 1994. The system is critical for the reliable transmission of power from hydro power plants in Oregon to the Los Angeles area.
The installation is to be completed in 30 months and will combine new, state-of-the-art seismic-resistant transmission materials with existing equipment.
ABB built the original terminal at Sylmar during the early 1970s, and upgraded it twice in the 1990s to its current capacity of 3,100MW. Its uses HVDC, a technology commercially developed by ABB, which enables large amounts of electricity to be transmitted with relatively low line losses.