Cryogenic Electrical Insulation and its Advantage

• Nagao Masayuki

  Toyohashi University of Technology

Bibliographic Information

Other Title

• 極低温絶縁技術とそのおもしろさ
• キョクテイオン ゼツエン ギジュツ ト ソノ オモシロサ

Abstract

This paper summarizes the cryogenic electrical insulation with polymers and its interesting features. At cryogenic temperature, polymers show high electric strength, extremely higher ac treeing inception voltage, low tanδ, no thermal and chemical degradation, no water tree degradation, very limited space charge injection and resulting high short-circuit treeing inception voltage, etc. Based on these features, we can call polymer at cryogenic temperature as “super electrical insulator". Water is an enemy of electrical insulation at room temperature, but at cryogenic temperature it is frozen and becomes an electrical insulation material. A paper-ice composite insulation system shows superior electrical insulation performance compared with conventional paper- liquid nitrogen system and is expected to be one of good candidates for cryogenic electrical insulation system.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 124 (9), 759-762, 2004

  The Institute of Electrical Engineers of Japan

Keywords

• electrical insulation
• cryogenic temperature
• superconducting cable
• solid insulation
• polar polymer
• paper-ice composite insulation

Details

• CRID: 1390282679569884672
• NII Article ID: 10013539031
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms.124.759
• BIBCODE: 2004IJTFM.124..759N
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 7076767
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7076767
• Web Site: http://www.jstage.jst.go.jp/article/ieejfms/124/9/124_9_759/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed