Siemens to provide power support for LS Power Grid substation projects in Calif.
Siemens Energy will provide technology in the form of four static synchronous compensator (STATCOM) installations for LS Power Grid substation projects in California in order to strengthen the reliability of the energy grid.
A STATCOM is a system capable of providing or absorbing reactive power to regulate the voltage at the point of connection to a power grid. This type of voltage regulation is key to ensuring the reliability of the power grid as renewable energy sources are brought online.
This will become more necessary in California with the retirement of Pacific Gas and Electric’s (PG&E) Diablo Canyon nuclear power plant in 2025. It is expected that there will be greater sensitivity to voltage instability, especially as PG&E integrates more renewable generation onto the grid.
Two of the STATCOM systems will be installed at LS Power’s Orchard substation connecting to the existing PG&E Gates 500 kilovolt (kV) substation in Fresno County. This will provide 848 megavolt-ampere (MVAr) of dynamic reactive power support, which is anticipated to mitigate high voltages during extreme contingencies on the Bulk Power System.
The other two STATCOMs will be installed at LS Power’s new Fern Road substation connecting the Round Mountain to Table Mountain 500 kV transmission lines. These two systems will be for voltage control and voltage support in case of system events and transmission outages.
“LS Power has a forward-looking strategy to help ensure grid stability as more and more renewable power sources are part of the generation mix,” Matt Neal, vice president of Transmission Solutions for Siemens Energy, said. “When it comes to decarbonizing our energy systems, this will be one of the most important flexible AC transmission projects in the U.S., both in terms of the power and voltage rating, as well as the challenging location from a seismic perspective.”
“We’re proud to support California’s efforts to incorporate more renewable energy sources into the power generation mix in a way that is not only efficient, but reliable in all weather conditions,” Neal added.
