Electrical and Mechanical Characteristics of Insulating Materials for HTS DC Cable and Cable Joint

A high-temperature superconducting (HTS) dc cable system consists of cable, termination, and cable joint. Polypropylene laminated paper (PPLP) and epoxy have been widely used as insulating material for HTS cable and cable joint. The electrical and mechanical characteristics of insulating materials a...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 25; no. 3; pp. 1 - 4
Main Authors Kim, Woo-Jin, Kim, Hae-Jong, Cho, Jeon-Wook, Choi, Yeon Suk, Kim, Sang-Hyun
Format Journal Article
LanguageEnglish
Published IEEE 01.06.2015
Subjects
Cable insulation
Cable joint
Flashover
Flashover and breakdown
High-temperature superconductors
HTS dc cable
Insulation
Joints
Oil filled cables
PPLP and epoxy
Superconducting cables
PPLP and epoxy
Cable joint
HTS dc cable
flashover and breakdown
insulation
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Summary:A high-temperature superconducting (HTS) dc cable system consists of cable, termination, and cable joint. Polypropylene laminated paper (PPLP) and epoxy have been widely used as insulating material for HTS cable and cable joint. The electrical and mechanical characteristics of insulating materials at cryogenic temperature must be investigated for the long life, stable operation, and compactness of the cable. In order to develop an HTS dc cable and cable joint, it is important to understand the fundamental properties of insulating materials. In this paper, we discuss mainly about the electrical and mechanical characteristics of insulating materials for HTS dc cable and cable joint. We investigate the characteristics of dc and impulse voltage. The flashover and breakdown characteristics of PPLP, epoxy, and composite of epoxy-PPLP are studied. In addition, the mechanical characteristic such as tensile strength of PPLP at 77 and 300 K is discussed.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2014.2385958