The Siemens static volt ampere reactive (VAR) compensation system (SVC) has strengthened the transmission path from Arizona to California since its completed installation in September 2006. This FACTS installation, currently the largest in North America, was handed over to the customer, Southern California Edison (SCE), after a very short lead time of 13 months for implementation and commissioning. Southern California Edison (NYSE:EIX) is one of the nation's largest electric utilities in the US, serving a population of more than 13 million via 4.8 million customer accounts in a 50,000-square-mile service area within central, costal and Southern California.
Siemens furnished, on a complete turnkey basis, all work required to engineer, design, manufacture, assemble, install, test and commission the Devers SVS for Edison's Transmission and Distribution Business Unit. The project included a 525 kV, three phase, 60 Hz, -110/+440 MVAR SVS at Devers Substation outside of Palm Springs, California, with a 110 MVAR mechanically switched capacitor (MSC) and a -110/+330 MVAR SVC. Siemens was able to get the system operational in only 11 months so that SCE was able to strengthen their bulk power 500 kV system by the summer peak.