Electrical insulation characteristics of PPLP as a HTS DC cable dielectric and GFRP as insulating material for terminations

S. H. Kim, J. H. Choi, W. J. Kim, K. L. Kim, H. G. Lee, Y. S. Kim, H. M. Jang, S. K. Lee

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)

    Abstract

    A high-temperature superconducting (HTS) DC cable system has attracted a great deal of interest from the view point of low loss, dense structure and large capacity compared to HTS AC cable system. It has a HTS cable and a termination. A HTS DC cable system consists of a conductor, cooling system and electrical insulation. To realize the HTS DC cable system, it is important to study not only high current capacity and low loss of conductor but also optimum electrical insulation at cryogenic temperature. The electrical insulation technology of HTS DC cable and termination must be solved for the long life, reliability and compact of cable.In this paper, we will discuss mainly on the electrical insulation characteristics and the insulation design of 220 kV class HTS DC cable. Voltage-time (V-t) characteristics of laminated polypropylene paper (PPLP) in LN 2 were studied. Furthermore, the surface flashover characteristics of glass fiber reinforced plastic (GFRP) for termination insulators under DC and lightning impulse voltage were studied.

    Original languageEnglish
    Article number6112202
    JournalIEEE Transactions on Applied Superconductivity
    Volume22
    Issue number3
    DOIs
    Publication statusPublished - 2012

    Bibliographical note

    Funding Information:
    Manuscript received September 09, 2011; accepted December 15, 2011. Date of publication December 23, 2011; date of current version May 24, 2012. This work was supported in part by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science, and Technology (2011-0013667).

    Keywords

    • Cable insulation
    • dielectric breakdown
    • dielectric materials
    • superconducting devices

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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