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 electronic systems that enable access to and from direct current (DC) lines and cables. This technology is being increasingly utilized in many locations around the world, and offers more versatility than more traditional forms of HVDC (High Voltage Direct Current), including the creation of multi-terminal HVDC networks. Installed at the point of connection at each of America's three asynchronous 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 - Xtreme Power

Tres Amigas SuperStation will employ Xtreme Power's Dynamic Power Resources™ (DPR™) to complement the transfer of energy by acting as the firming agent between interconnection points. The proven technology will store and redeliver energy to take advantage of energy arbitrage opportunities among grids. Through rapid charge-discharge cycles, the DPR™ will also provide fast, dynamic access to megawatts of power for smoothing intermittent renewable generation and providing ancillary services that enhance grid reliability and power quality.