Siemens has been awarded a contract by New Jersey-based Public Service Electric and Gas Co. (PSE&G), one of the largest electric utilities in the U.S., for the design, engineering, manufacturing, installation, testing and commissioning of an indoor 230-kV, 4000-A, 80-kA gas-insulated substation (GIS) and associated gas-insulated bus (GIB).

The GIS is an expansion of the existing Bergen switching station located in Ridgefield, New Jersey. The new infrastructure will help provide additional load capability and enhanced system reliability, all in a small footprint. Commissioning of the substation is scheduled in stages beginning at the end of 2012 through April 2013.

The Siemens scope of supply includes the design, engineering, installation, testing and commissioning of the GIS and associated control and protection buildings, as well as the GIS breakers in a breaker-and-a-half arrangement.

The GIS technology allows construction of a substation in a significantly reduced space, compared to conventional air-insulated substations. GIS is also considered a more reliable solution with limited maintenance and less sensitivity to potential external environmental factors. It is equipped with a state-of-the-art gas density monitoring system in order to continuously monitor SF6 density. The system's partial-discharge sensors also predict potential partial discharge in the system, alerting the utility in advance of an irregularity.

Siemens understands the complete energy-conversion chain and is able to transform today's grid into a living infrastructure that is smart enough to respond quickly, flexibly and comprehensively to society's energy needs. Siemens also incorporates solutions for commercial and industrial applications as well as smart homes, including building automation, information technology systems integration, advanced lighting technology and energy-efficient appliances for a comprehensive smart grid solution.