|Date:||2/2/96 Record No.: 10277|
|Contact:||Gary Dishaw, Southern California Edison; Eddie Leung, Energy & Power Systems|
High-Temperature Superconducting Current Limiter
A partnership consisting of American Superconducting, Lockheed Martin, Southern California Edison, and Los Alamos National Laboratory have demonstrated a 2.4-kilovolt high-temperature superconducting (HTS) current limiter prototype. The demonstration was funded by DOE's Superconductivity Partnership Initiative program (described in the 9/94 UFTO reports on Argonne and Oak Ridge National Lab). American Superconductor expects to commercialize HTS current limiters by the end of the decade.
Tests performed at SCE indicated that all performance goals for this device were met. In addition, tests of the prototype demonstrated two other attractive features for utilities--this new, fully automated device can be used as an extremely fast circuit breaker and can interrupt multiple faults. One of the unique components of this new fault current limiter is its high temperature superconducting coil that is connected into the electric power grid using a solid-state switch.