Electrical Insulation Characteristics of HTS Cables Under Quench-Induced Thermal Stress Condition
Electrical Insulation Characteristics of HTS Cables Under Quench-Induced Thermal Stress Condition
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淬火热应力条件下高温超导电缆的电绝缘特性
DOI：
10.1109/tasc.2007.899968
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发表时间：
2007
影响因子：
1.8
通讯作者：
M. Hirose
中科院分区：
文献类型：
--
作者：
N. Hayakawa;S. Ueyama;H. Kojima;F. Endo;T. Masuda;M. Hirose
讨论了高温超导(HTS)电缆在热电联合应力作用下失超状态下的电绝缘特性。我们在样品电极上施加60赫兹的交流高压，并在Bi2223/Ag带材中注入60赫兹的交流大电流来诱导失超。实验结果表明，在高压条件下，局部放电是由失超引起的暂态热应力引起的。实验得到了局部放电起始的综合应力判据。
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.