The barrier effect on breakdown for design of 154 kV class HTS transformer

H. G. Cheon, J. H. Choi, K. J. Kim, H. G. Lee, S. H. Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


LN2 is used as an insulating material as well as a cryogen for a 154 kV class HTS transformer. However, main insulation with LN2 is not enough, and thus, research on barrier has been performed. The most of experiments on this barrier effect are combination of paper and air (air, SF6, etc.), and also the results from these experiments on barrier effect are insufficient to be used practically for the electric insulation design of the 154 kV class HTS transformer. Moreover, there are insufficient researches regarding cryogenic liquid used for superconducting equipments. In this paper, we examined the breakdown properties of the barrier related to the position, number and materials. With the database in the electrical breakdown properties, the electric insulation design as the main insulation for the 154 kV class.

Original languageEnglish
Article number5675715
Pages (from-to)1434-1437
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3 PART 2
Publication statusPublished - 2011 Jun


  • Barrier
  • Breakdown
  • GFRP
  • Pressboard

ASJC Scopus subject areas

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


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