Analysis on the Degradation Characteristics of 2G High-Tc Superconducting Wires in Accordance with Electrical Breakdown Voltage

Abstract:

Recently, extensive studies have been carried out on developing a high voltage superconducting apparatus as a substitute for the conventional one. superconducting wires used for a high voltage superconducting apparatus can be damaged under high voltage condition due to electrical breakdown and the damaged superconducting wires may result in the degradation of the critical current (Ic) and index number. Therefore, a study on the degradation characteristics of superconducting wires in accordance with the electrical breakdown should be performed. In this paper, the degradation characteristics of second generation high temperature superconducting (2G HTS) wires with respect to electrical breakdown tests are studied. The applied electrical breakdown voltages to 2G HTS wire are AC and lightning impulse (Imp) ; 50, 60 and 70 kV. The electrical breakdown test is successively repeated five times. The Ic and index number of 2G HTS wires were measured. The relationship between electrical characteristics such as the Ic and index number and the electrical breakdown was analyzed.

• Periodical: Advanced Materials Research (Volume 1125)
• Pages: 593-597
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1125.593
• Online since: October 2015
• Authors: Hong Seok Lee, Jong O. Kang, On You Lee, Seung Min Bang, Junil Kim, Young Kyu Mo, Jong Gi Hong, Jae Hun Lee, Cheo Lyeong Jang, Hyoung Ku Kang*
• Keywords: Critical Current, Degradation Characteristics, Electrical Breakdown, HTS Wires, Index Number

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