摘要
在26篇文献的基础上综述了超导电缆本体及终端结构和绝缘特点。分析了不同绝缘结构的特点及主要绝缘材料常温和低温条件下的电气及机械性能。固体绝缘在低温下具有更优异的电气性能,但机械性能下降。EPR绝缘在液氮低温下的机械性能优于同条件下PE及XLPE的性能。液氮浸渍复合绝缘结构较易产生局部放电,纤维基绝缘材料的耐局部放电性能比薄膜材料差。提高液氮浸渍复合绝缘中液氮的压力可提高绝缘层局部放电的起始放电电压。
The insulation characteristics of both cryostats and termination of HTS cable are inˉtroduced.The characteristics of different insulation and the properties,both in room temperature and cryogenic temperature,of several materials are investigated in this paper.Solid type insulaˉtion has excellent electric properties and the mechanical properties decreased under cryogenic temperature.The mechanical properties of EPR insulation are better than that of PE and XLPE.Composite insulation is coherent with partial discharge(PD)due to its structure.Fibrous type material has weaker resistance to PD than that of film type material.The inception voltage of PD increased as the pressure of liquid nitrogen rise in composite insulation.
出处
《绝缘材料》
CAS
2005年第1期59-64,共6页
Insulating Materials
基金
国家十五"863"计划资助项目(2002AA306161)
关键词
高温超导电缆
绝缘
绝缘材料
低温
局部放电
电缆终端
HTS cable
insulation
cryogenics
insulation material
partial discharge
cable termination
