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http://dx.doi.org/10.9714/psac.2011.13.3.005

Dielectric Breakdown Characteristics of PPLP and GFRP for HTS DC Cable System  

Kim, S.H. (경상대학교 전기공학과 및 ERI)
Choi, J.H. (경상대학교 전기공학과 및 ERI)
Kim, W.J. (경상대학교 전기공학과 및 ERI)
Jang, H.M. (LS 전선(주) 전력연구소)
Lee, S.K. (LS 전선(주) 전력연구소)
Publication Information
Progress in Superconductivity and Cryogenics / v.13, no.3, 2011 , pp. 5-9 More about this Journal
Abstract
DC high-temperature superconducting(HTS) cable system has attracted a great deal of interest from the view point of low loss, dense structure and large capacity. A HTS cable system is made of cable and termination. The insulating materials and insulation technology must be solved for the long life, reliability and compact of cable system. In this paper, we will report on the dielectric breakdown characteristics of insulating materials for HTS cable and termination. The AC, DC and lightning impulse breakdown strength of laminated polypropylene paper(PPLP) and glass fiber reinforced plastic(GFRP) have been measured under nitrogen pressures in the range of 0.l-0.4MPa. PPLP and GFRP are found to have a significantly higher DC breakdown strength. Also, DC surface flashover voltage of negative polarity is slightly higher than that of positive polarity in GFRP.
Keywords
HTS DC cable and termination; Dielectric breakdown characteristics; PPLP and GFRP;
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