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2003 Fiscal Year Final Research Report Summary

Development of High Performance Electrical Insulation System of Superconducting Power Apparatus by Polymeric Composite Materials

Research Project

Project/Area Number 14350152
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 電力工学・電気機器工学
Research InstitutionGifu National college of Technology

Principal Investigator

KOSAKI Masamitsu  Gifu National Collage of Technology, President, 校長 (80023191)

Co-Investigator(Kenkyū-buntansha) MURAMOTO Yuji  Meijo University, Faculty of Science and Technology, Lecturer, 理工学部, 講師 (70273331)
TOKORO Tetsuro  Gifa National Collage of Technology, Department of Electrical and Computer Engineering, Professor, 電気情報工学科, 教授 (10155525)
NAGAO Masayuki  Toyohashi University of Technology, Department of Technology, Professor, 工学部, 教授 (30115612)
Project Period (FY) 2002 – 2003
Keywordsethylene-propylene rubber / cryogenic temperature / polymeric materials / filler / space charge / breakdown / treeing resistance
Research Abstract

The investigators have been studying the application of polymeric materials (ethylene-propylene rubber (EPR)) to electrical insulation system of superconducting power apparatus. At cryogenic temperature, there are many practical insulation studies on fluids such as liquid nitrogen or liquid helium but scarce studies on the solid insulation enabling a high voltage design.
The results are summarized as follows:
(1) Plastics with fillers, in the case of EPR, give excellent electrical performance in addition to the controlled thermal contraction at cryogenic temperature.
(2) The electrical breakdown and space charge of EPR samples with fillers for the DC electrical insulation system showed that the breakdown strength at cryogenic temperature is much higher than that at room temperature. This may be attributed to loss carrier injection from electrode and gives a strong incentive to design the electrical insulation of superconducting power apparatus.
(3) The EPR resistance to treeing both at cryogenic and room temperatures and the effect of fillers on resistance to treeing showed that EPR has sufficient resistance to AC treeing at cryogenic temperature and the fillers improve resistance to AC treeing slightly.
The results obtained in this study open an avenue to the application of polymeric materials (EPR) to electrical insulation system of superconducting power apparatus. EPR seem to be promising materials for solid insulation in the cryogenic region.

  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 箕田充志: "直流超電導ケーブルへの固体絶縁方式適用の基礎的検討"低温工学. 38・4. 147-151 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Kosaki: "Super Electrical Insulation of Polymer in Cryogenic Region"Proceedings of 7^<th> ICPADM(03CH37417). 1. 9-14 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Tokoro: "Relation between Motion of Water Droplets and Dielectric Property of Silicone Rubber under AC High-field Application"Proceedings of 7^<th> ICPADM(03CH37417). 3. 1236-1239 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Nagao: "Life Time of Ice-Paper Composite Insulation in Liquid Nitrogen"13^<th> ISH,2003 Millpress, ISBN 90-77017-79-B. 1. 379 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Muramoto: "Space charge distribution before breakdown of polyimide film by short interval measurement with PEA method"2003 IEEE Annual Report of CEDIP(03CH37471). 1. 329-332 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 箕田充志: "固体絶縁方式超電導ケーブル用EPRのトリーイング特性"低温工学. 38・10. 554-559 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] NISHIOKA Koji: "Effect of Moisture on Treeing Phenomenon in Epoxy Resin with Fillers under A.C. Voltage"Technical Meeting of DEI. DEI-02-61. 25-28 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Space Charge Distribution of Polyimide Films up to Breakdown at Room Temperature"Technical Meeting of DEI. DEI-02-65. 31-34 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Breakdown of polyethylene Film Subjected to partial Discharge in Air Gap"Proceedings of 2002 Annual Conference of Fundamentals and Materials Society IEE Japan. VI.41. 275-279 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] TOKORO Tetsuro: "Image analysis of hydrophobicity and dielectric property of polymer insulating material"2002 IEEE Annual Report of CEDIP (02CH37372). Vol.1. 247-250 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Breakdown and Space Charge Distribution in Polyimide Film"2002 IEEE Annual Report of CEDIP((02CH37372). Vol.1. 570-573 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] TOKORO Tetsuro: "Dielectric Measurement of Water Droplet Behavior on Polymer Insulator Surface"Proceedings of 34^<th> Symposium on Electrical and Electronic Insulating Materials and Application in Systems. B-4. 53-56 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "AC Breakdown of LDPE films with Air-Polymer Composite Insulation System"Proceedings of 34^<th> Symposium on Electrical and Electronic Insulating Materials and Application in Systems. J-4. 213-216 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MINODA Atsushi: "Basic Study for Application of Solid Insulation System to D.C Superconducting Cable"Cryogenic Eng. Vol.38, No. 4. 147-151 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] KOSAKI Masamitsu: "Super Electrical Insulation of Polymer in Cryogenic Region"Proceedings of 7^<th> ICPADM (03CH37417). Vol.1, SS2. 9-14 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] TOKORO Tetsuro: "Relation between Motion of Water Droplets and Dielectric Property of Silicone Rubber under AC High-field Application"Proceedings of 7^<th> ICPADM (03CH37417). Vol.3, S24-4. 1236-1239 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Breakdown of Polyethylene Film Subjected to Partial Discharge in Air Gap"IEEJ Trans. FM. Vol.123, No.7. 682-686 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Effect of Space Charge Distribution on Breakdown Characteristics of Polyimide Films"13^<th> ISH. 2003 Millpress, ISBN 90-77017-79-B. 367 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] NAGAO Masayuki: "Life Time of Ice-Paper Composite Insulation in Liquid Nitrogen"13^<th> ISH. 2003 Millpress, ISBN 90-77017-79-B. 379 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MURAMOTO Yuji: "Space charge distribution before breakdown of polyimide film by short interval measurement with PEA method"2003 IEEE Annual Report of CEDIP (03CH37471). Vol.1. 329-332 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] MINODA Atsushi: "Treeing Characteristics of EPR for Solid Insulated Superconducting Cable"Cryogenic Eng. Vol.38, No.10. 554-559 (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2005-04-19  

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