European project on a self-limiting superconducting power link

Superconducting power links (SUPERPOLIs) will offer the opportunity for low -loss power transmission of high nominal currents and fault current limitat ion (FCL) simultaneously in one single device. They will find their applica tions as generator out-lines or in the medium voltage power distribution gr id. As a significant step towards the GV A-class three-phase application, t he first aim of the project is the demonstration of a one-phase functional model of length 2 m for 20 kV(rms). 2 kA(rms)/5 kA(rms) operation; it will include the development of two alternative low-ac-loss conductor designs su itable for current limitation: a low-cost composite tubular Bi-2212 conduct or with moderate J(c) and a coated tubular Y-123 conductor, presenting a ve ry high J(c).