Establishment of Paper-Ice Composite Insulation System toward to HTS Cable

高温超导电缆纸冰复合绝缘系统的建立

• 批准号: 22656068
• 负责人: NAGAO Masayuki
• 金额: $ 2.11万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656068/
• 关键词: 極低温; 紙-氷絶縁; PPLP; 絶縁破壊

We have been suggesting the paper-ice composite system as one of the candidates for the insulating system with LN2 in high-temperature superconducting cables. The paper-ice composite system is an insulating paper filled with ice and it could inhibit the partial discharge inside the microscopic N_2 gas bubbles remained in the paper. Main results are summarized as below.(1) It was confirmed that the KP-Ice composite system could provide lower capacitance and high-voltage endurance to high-temperature superconducting cable.(2) It was confirmed that PPLP immersed in LN_2 had higher dielectric strength(Fb) than the KP in LN2. It was also confirmed that Positive Fb of PPLP was higher than negative Fb of PPLP. This result could lead the two charge transfer models, the injection model of the negative charge into the KP layer of PPLP and no-injection model of the charge into the PP layer.

我们一直在建议使用高温超导电缆的LN2进行纸冰复合系统作为绝缘系统的候选。纸冰复合系统是一张充满冰的绝缘纸，它可能会抑制微观N_2气泡中保留在纸张中的部分放电。主要结果总结如下所示。（1）证实，KP-ICE复合系统可以为高温超导电缆提供较低的电容和高压耐力。（2）可以在LN2中使用LN_2中浸入LN_2的PPLP具有较高的介电强度（FB）。还可以证实，PPLP的阳性Fb高于PPLP的负Fb。该结果可能会导致两个电荷转移模型，即负电荷的注射模型到PPLP的KP层，而无电荷模型的无注射模型进入PP层。

项目成果

液体窒素中における絶縁紙-氷複合材料の誘電特性

绝缘纸-冰复合材料在液氮中的介电性能

• 发表时间: 2011
• 作者: 川島朋裕;栗本宗明;村上義信;長尾雅行
• 通讯作者: 長尾雅行

Dielectric Characteristicsof Insulating Paper-Ice CompositeMaterial in Liquid Nitrogen

绝缘纸-冰复合材料在液氮中的介电特性

• 发表时间: 2011
• 作者: T. Kawashima;M. Kurimoto;Y. Murakami;M. Nagao
• 通讯作者: M. Nagao

Dielectric Breakdown Mechanism of Polypropylene Laminated Paper in Liquid Nitrogen

液氮中聚丙烯层压纸的介电击穿机理

• 发表时间: 2011
• 期刊: 2011 Annual Report. IEEE Conference on Electrical Insulation and Dielectric Phenomena
• 作者: M. Nagao;M. Kurimoto;R. Takahashi;T. Kawashima;Y. Murakami;T. Nishimura;Y. Ashibe;T. Masuda
• 通讯作者: T. Masuda

Dielectric Characteristics of Insulating Paper-Ice Composite Material in Liquid Nitrogen

绝缘纸-冰复合材料在液氮中的介电特性

• 发表时间: 2011
• 作者: T.Kawashima;M.Kurimoto;Y.Murakami;M.Nagao
• 通讯作者: M.Nagao

PPLP-液体窒素複合絶縁系のインパルス絶縁破壊機構の検討

PPLP-液氮复合绝缘系统冲击击穿机理研究

• 发表时间: 2010
• 作者: 高橋良輔;村上義信;長尾雅行;西村崇;芦辺祐一;増田孝人
• 通讯作者: 増田孝人