摘要
超导带材的匝间绝缘能力是超导限流器中带材线圈绕制尺寸把握的一个重要依据。本文带材处于电流冲击状态下,通过改变带材通流大小及绝缘带尺寸,对带材匝间绝缘强度进行相关因素研究。实验结果表明,大通流下使带材失超,产生大量气泡,且会使带材表面发生沿面闪络现象,研究发现可通过改变绝缘带宽度或高度来增加匝间爬电距离,以避免该现象发生。
The interturn insulation capability of superconducting tape is an important basis for determining the winding size of tape coil in superconducting fault current limiter.In this paper,the interturn insulation strength of tape was studied by changing the size of current passing and insulating tape under current impact.The experimental results show that the large current makes the tape quench,produces a large number of bubbles and causes the flashover phenomenon along the surface of the tape.It is found that the creepage distance between interturns can be increased by changing the width or height of the insulation band to avoid this phenomenon.
作者
柯其琛
徐国顺
庄劲武
张超
李思光
Ke Qichen;Xu Guoshun;Zhuang Jinwu;Zhang Chao;Li Siguang(College of Electric Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《低温与超导》
CAS
北大核心
2019年第10期35-39,共5页
Cryogenics and Superconductivity
基金
国家自然科学基金项目(51607184)资助
关键词
超导限流器
沿面闪络
爬电距离
Superconducting fault current limiter
Surface flashover
Creepage distance
作者简介
柯其琛(1995-),男,硕士研究生,研究方向:电力系统保护及其安全运行。
