An analysis of the operating conditions of superconducting power transmission lines

This paper analyzes the operating conditions of a superconducting power transmission line (SPTL), with respect to the specific features of the processes in it. The process of initial cooling of the line, its approach to steady-state conditions, energizing, load buildup, and certain dynamic and transient conditions are examined. The presence of three forms of energy flow electrical, thermal, and fluid flow) necessitated by the operating requirements of the superconducting material in an SPTL, leads to interrelated processes of electrodynamics, heat transfer and hydrodynamics. The nature of their mutual interactions determines the operational reliability of a superconducting cable system, therefore it is necessary to consider probable SPTL operating conditions and these processes in a superconducting cable and to find techniques for controlling these processes.