High voltage insulation for power cables utilizing high temperaturesuperconductivity

It is worth noting that, with a few exceptions, the efforts to develop dielectric systems, especially for the LTD superconducting cables, are lagging behind the intense efforts to develop more efficient HT superconducting materials, tapes, and conductors. The results presented here and reported in the literature confirm that lifetime is usually greater for cryogenic insulation, and thus the impulse and switching surge breakdown strengths may be a limiting factor in determining the operating stress of such insulation