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http://dx.doi.org/10.9714/psac.2007.9.1.061

Electrical Insulation Design of a 154 kV Class HTS Cable and Termination  

Kwag, Dong-Soon (경상대 대학원 전기공학과)
Cheon, Hyeon-Gweon (경상대 대학원 전기공학과)
Choi, Jae-Hyeong (경상대 대학원 전기공학과)
Kim, Hae-Jong (한국전기연구원 초전도응용연구그룹)
Cho, Jeon-Wook (한국전기연구원 초전도응용연구그룹)
Kim, Sang -Hyun (경상대 전기공학과)
Publication Information
Progress in Superconductivity and Cryogenics / v.9, no.1, 2007 , pp. 61-66 More about this Journal
Abstract
A transmission class high-temperature superconducting(HTS) power cable system is being developed in Korea. For insulation design of this cable the grading method of insulating paper is proposed. Two kinds of laminated polypropylene paper that has different thickness has been used as the electrical insulation material. The use of graded insulation gives improved mechanical bending properties of the cable. In a HTS cable technology the terminations are important components. A HTS cable termination is energized with the line-to-ground voltage between the coaxial center and outer surrounding conductors. in the axial direction. There is also a temperature difference from ambient to about 77 K. For insulation design of this termination, glass fiber reinforced plastic(GFRP) was used as the insulation material of the termination body, and the capacitance-graded method is proposed. This paper will report on the experimental investigations on impulse breakdown and surface flashover characteristics of the insulation materials for insulation design of a transmission class HTS power cable and termination. Based on these experimental data, the electrical insulation design of a transmission class HTS power cable and termination was carried out.
Keywords
HTS cable; termination; cryogenics; insulation design;
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