HVDC > HVDC References > North America > Pacific HVDC Intertie > Upgrading to 3100 MW
In 1985 another contract was awarded to ABB for the extension of the PI transmission rating from 2000 to 3100 MW. This project was called the Pacific Intertie Expansion (PIE). New 1100 MW converter stations had to be installed in parallel with the existing stations and the current in the DC line
Celilo with Pacific Intertie Expansion (PIE) | was raised to 3100 A. ABB's undertaking this time was the delivery of the converter stations for the terminals Celilo and Sylmar. At Sylmar it was necessary to build a new terminal, Sylmar East, a few miles from the first Sylmar site. The PIE was commissioned in 1989. |