The Fundamental Characteristics of PPLP as Insulating Material for HTS DC Cable

被引:34
作者
Kim, W. J. [1 ,2 ]
Kim, S. H. [1 ,2 ]
Kim, H. J. [3 ]
Cho, J. W. [3 ]
Lee, J. S. [4 ]
Lee, H. G. [4 ]
机构
[1] Gyeongsang Natl Univ, Dept Elect Engn, Jinju 660701, South Korea
[2] Engn Res Inst, Jinju 660701, South Korea
[3] Korea Elect Res Inst, Ctr Superconduct Res, Chang Won 641120, South Korea
[4] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea
关键词
Breakdown characteristics; high-temperature superconducting (HTS) dc cable; polypropylene laminated paper (PPLP); space charge;
D O I
10.1109/TASC.2013.2244158
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A high-Tc superconducting (HTS) dc cable system consists of an HTS conductor, cooling system, insulating materials, and high-voltage insulation. The insulating materials and high-voltage insulation at cryogenic temperature can be developed for longer life, reliability, and compactness of HTS dc cables. Polypropylene laminated paper (PPLP) has been widely used as an insulating material for HTS ac cables. However, the dc dielectric characteristics of PPLP in liquid nitrogen (LN2) have not been revealed satisfactorily until now. In order to develop the HTS dc cable, it is important to understand the fundamental characteristics of PPLP. In this paper, we research the fundamental characteristics of PPLP for HTS dc cables and the volume resistivity, space charge, and the dc breakdown characteristics of PPLP in LN2. The findings of our research were studied under dc and lightning impulse voltage and imply that the PPLP may be used as an insulating material for HTS dc cables.
引用
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页数:4
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