Technology
The Tres Amigas SuperStation will employ the latest in power grid technologies, including superconductor cables, voltage source converters and energy storage systems.
Superconductor Cable
Developed over the course of the past decade, superconductor cable technology will be utilized to carry gigawatts of power with 100 percent efficiency between each of the SuperStation’s three converter stations. The cable will be contained in a three-foot underground pipeline similar to those used in the oil and natural gas industries. Superconductor cables are more power dense and more efficient than any other transmission option available. Their underground nature also significantly enhances system security and reliability.
Image provided courtesy of American Superconductor
Voltage Source Converters
Voltage Source Converters (VSCs) are power electronics systems that enable multi-terminal access to and from direct current (DC) lines and cables. This technology is currently being utilized in more than a dozen locations around the world. Installed at the point of interconnection of each of America’s three power grids, VSCs will transition the alternating current (AC) power flowing from the power lines feeding into the SuperStation into DC power and will then transition DC power into AC power at the adjacent grids. In essence, the Tres Amigas SuperStation will resemble a power roundabout or rotary, with superconductor cables serving as the main pathway for electricity and VSCs serving as on-ramps and off-ramps for the power.
Energy Storage
Tres Amigas SuperStation will employ energy storage batteries of proven design that will complement the transfer of energy while providing optional ancillary services. These systems will provide fast, dynamic access to megawatts of power and will be able to handle the numerous charge-discharge cycles associated with intermittent renewable energy sources. The system also will utilize its stored green energy to provide reactive system support, enhancing grid reliability and power quality.
