| 高温超导电缆及其低温绝缘研究现状 |
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| 引用本文： | 杜伯学,邢云琪,傅明利,侯帅.高温超导电缆及其低温绝缘研究现状[J].南方电网技术,2015,9(12):29-38. |
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| 作者姓名： | 杜伯学 邢云琪 傅明利 侯帅 |
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| 作者单位： | 天津大学电气与自动化工程学院，天津300072,天津大学电气与自动化工程学院，天津300072,南方电网科学研究院，广州510080,南方电网科学研究院，广州510080 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）（2014CB239506）；广东省领军人才专项基金(SEPRI-K151003)；南方电网公司2015年科技项目(WYKJQQ20143013) |
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| 摘 要： | 概述了世界上高温超导电缆的研究历史和现状，介绍了高温超导电缆本体的基本结构及绝缘要求，分析了高温超导电缆主绝缘的结构及存在的问题。针对高温超导电缆中使用的液氮和几种低温固体绝缘材料，分别介绍了其在低温环境下介电性能的相关研究进展。总结发现：液氮的击穿场强受到气泡和电极材料的影响；液氮下绝缘材料的直流击穿场强高于交流击穿场强；聚酰亚胺在液氮下的交直流击穿场强高于聚丙烯层压纸；低温会抑制环氧树脂中电树枝的生长。
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| 关 键 词： | 超导电缆 电气绝缘 超导电力技术 低温介电材料 |
Present Research Status of High Temperature Superconducting Cable and Its Cryogenic Insulation |
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| DU Boxue,XING Yunqi,FU Mingli and HOU Shuai.Present Research Status of High Temperature Superconducting Cable and Its Cryogenic Insulation[J].Southern Power System Technology,2015,9(12):29-38. |
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| Authors: | DU Boxue XING Yunqi FU Mingli and HOU Shuai |
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| Affiliation: | Eleetrical Engineering and Automation, Tianjin University, Tianjin 300072, China,Eleetrical Engineering and Automation, Tianjin University, Tianjin 300072, China,Electric Power Research Institute, CSG, Guangzhou 510080, China and Electric Power Research Institute, CSG, Guangzhou 510080, China |
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| Abstract: | The research history and current status of high temperature superconducting (HTS) cable in the world are summarized, and the basic structure and insulation requirements of HTS cable body are introduced.Then, the structure and problem of the main insulation for HTS cable are analyzed. For liquid nitrogen ( LN2 ) and several solid insulation materials under low temperature applied in HTS cables, related researches are put forward separately on their dielectric property under low temperature. It can be concluded that, in LN2, the breakdown strength of insulation material is higher in DC field than that in ac field; the breakdown strength of polyimide is higher than that of polypropylene laminated paper (PPLP) in both ac and dc field; low temperature can suppress the growth of the electrical tree in epoxy resin. |
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| Keywords: | superconducting cable electrical insultion superconducting power technology cryogenic dielectric materials |
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