Title :
Electrical Insulation Characteristics of HTS Cables Under Quench-Induced Thermal Stress Condition
Author :
Hayakawa, N. ; Ueyama, S.. ; Kojima, H. ; Endo, F. ; Masuda, T. ; Hirose, M..
Author_Institution :
Nagoya Univ., Nagoya
fDate :
6/1/2007 12:00:00 AM
Abstract :
This paper discusses the electrical insulation characteristics of high temperature superconducting (HTS) cable under quench condition exposed to thermal and electrical combined stress. We applied a high voltage of 60 Hz ac to the sample electrode, and injected a large current of 60 Hz ac into Bi2223/Ag tapes to induce quench. Experimental results revealed that partial discharges (PD) were induced by the transient thermal stress due to quench under the high voltage condition. A criterion of the combined stress for PD inception was experimentally obtained.
Keywords :
cable insulation; high-temperature superconductors; partial discharges; superconducting cables; thermal stresses; HTS cables; electrical insulation characteristics; high temperature superconducting cable; partial discharges; quench-induced thermal stress condition; transient thermal stress; Cable insulation; Dielectrics and electrical insulation; Electrodes; High temperature superconductors; Partial discharges; Superconducting cables; Superconducting films; Thermal quenching; Thermal stresses; Voltage; Combined stress; HTS cable; electrical insulation; partial discharge; quench;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.899968
