Quench-Induced Dynamic Breakdown Characteristics of LN2 and LN2/PPLP Composite Electrical Insulation System for Superconducting Power Apparatus

被引：0
|
作者：
Hayakawa, N. [1 ]
Matsuoka, T. [2 ]
Nishimachi, S. [2 ]
Kojima, H. [2 ]
机构：
[1] Nagoya Univ, EcoTopia Sci Inst, Nagoya, Aichi 4648603, Japan
[2] Nagoya Univ, Dept Elect Engn & Comp Sci, Nagoya, Aichi 4648603, Japan
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2015年 / 25卷 / 03期
关键词：
Breakdown; bubble; electrical insulation; liquid nitrogen; partial discharge (PD);
D O I：
10.1109/TASC.2014.2361405
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In HTS power apparatus, quench due to the fault current generates dynamic electrical/thermal combined stress. This stress may induce the electric breakdown (BD) under the operating voltage. We investigated the quench-induced dynamic BD characteristics of LN2. In addition we investigated the quench-induced dynamic partial discharge characteristics of LN2/polypropylene laminated paper composite electrical insulation system for HTS cables. The criteria of the combined electrical/thermal stress for the dynamic BD were obtained for both test samples, and the reduction rate of the dynamic BD criteria against the static BD criteria without thermal stress was discussed.
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页数：4
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