Operating and maintenance experience-Adelanto converter station of the Intermountain Power Project

The author presents the operation and maintenance experience from the Adelanto converter station. The period of operation reported covers from June 7, 1986, to December 31, 1988. The performance of the transmission system, control system, and the thyristor valves are discussed. Reliability and availability data are presented. Operating experience indicates that the Intermountain Power Project (IPP) HVDC (high-voltage DC) transmission system is a reliable transmission path bringing electric power from Utah to Southern California. The IPP HVDC system continues to meet reliability requirements. The initial design of the IPP HVDC transmission system incorporated many improved features based on operating experience of earlier systems, particularly the Pacific HVDC Intertie.<>