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Fundamental Study on Composite Electrical Insulation Design for Superconducting Power Apparatuses Using Low and High Temperature Superconductors

Research Project

Project/Area Number 01460130
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 電力工学
Research InstitutionToyohashi University of Technology

Principal Investigator

KOSAKI Masamitsu  Toyohashi University of Technology Department of Electrical & Electronic Engineering Professor, 工学部, 教授 (80023191)

Co-Investigator(Kenkyū-buntansha) MIZUNO Yukio  Toyohashi University of Technology Department of Electrical & Electronic Enginee, 工学部, 助手 (50190658)
NAGAO Masayuki  Toyohashi University of Technology Department of Electrical & Electronic Enginee, 工学部, 助教授 (30115612)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥5,500,000 (Direct Cost: ¥5,500,000)
Fiscal Year 1991: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1990: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1989: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsCryogenic Temperature / Electrical Insulation / Polymer / Electrical Breakdown / Mechanical Properties / High Electric Field / Dielectric Properties / Superconducting Power Apparatuses
Research Abstract

The purpose of this study is to investigate electrical and mechanical properties of composite insulating systems as well as their components in the cryogenic temperature region from liquid helium temperature to liquid nitrogen temperature. The main results obtained in these three years are as follows. They give inportant information on the insulation design of superconducting power apparatuses.
1. Ethylene-propylene rubber (EPR), a kind of composites of base ethylene-propylene and additives, has excellent mechanical properties at cryogenic temperature because of small shrinkage and small stress caused during cooling. Furthermore, EPR has higher resistance to cracking than polyethylene (PE).
2. Electric strength of EPR increases gradually as temperature decreases and is superior to that of PE at liquid helium temperature. Dissipation factor of EPR is larger than PE even at cryogenic temperature especially under high electric field The optimization of the components and amount of additives in EPR which are introduced to keep its enhanced mechanical properties is necessary.
3. Extruded EPR insulated cable shows good electrical and mechanical properties at liquid helium temperature. It is confirmed that there is no problem in repetitive cooling of the cable
4. Electric strength of polyvinylchloride (PVC), a typical polar polymer, shows peak value around 200K, which is quite different from that reported. This is attributed to morphology of PVC and space charge formation in PVC.
5. Lifetime of polyethylene exposed to partial discharges in liquid nitrogen becomes shorter with the increase of magnetic field.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] 大江 敏男他: "超電導ケ-ブルへの適用を考慮した各種高分子電気絶縁材料の液体窒素温度における機械的特性" 低温工学. 25. 165-171 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小崎 正光他: "押出しエレチンプロピレンゴム絶縁超電導ケ-ブルの開発に関する研究" 電気学会論文誌B. 111. 454-460 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Mizuno et.al.: "Evaluation of Ethlene Propylene Rubber as an Electrical insulation Material of Superconducting Cable" 3rd International Confereuce on Properties and Applications of Dielectric Matuial,Tokyo,Japan. 1. 317-321 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Nagao et.al.: "Distinctive Electrical Breakdown of Polar Polymeric Films in Cryogenic Tmperature Region" 7th International Symposium on High Voltage Engineering,Dreden,Germany. 2. 139-142 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Mizuno et.al.: "Effect of Maguetic Field on Electrical Bracakdown of Polyethylene Film/Liquid Nitrogen Composite Insulation System" Confernce on Electrical Insulation and Dielectric Phenomena,Knoxville,U.S.A.603-608 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Kosaki et.al.: "Development of Polymer Insulated Superconducting Cable" 3rd International Toki Conference on Plasma Physics and Controlled Nuclear Fusion,Toki,Japan. SP-3 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 長尾 雅行他: "極低温領域における有極性高分子フィルムの絶縁破壊" 電気学会論文誌A. 112. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Mizuno et.al.: "Performance of Extruded Ethylene Propylene Rubber Insulated Cryogenic Power Cable" 1992 IEEE International Symposium on Electrical Insulation,Baltimore,U.S.A.(1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y.Mizuno et.al.: "Evaluation of Ethylene Propylene Rubber as Solid Electrical Insulating Material of Superconducting Cable" IEEE Trans.on Electrical Insulation.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Kosaki et.al.: "Development of Extruded Polymer Insulated Superconducting Cable" Cryogenics.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 水野 幸男他: "極低温領域におけるエチレンプロピレンゴムの誘電・絶縁特性" 低温工学.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Ohe, Y. Mizuno, M. Nagao & M. Kosaki: ""Mechanical Properties of Polymers for Electrical Insulating Materials of Superconducting Power Cables"" Cryogenic Engineering. 25. 165-171 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Kosaki, M. Nagao, Y. Mizuno, N. Shimizu & K. Horii: ""Study on Development of Extruded Ethylene Propylene Rubber Insulated Superconducting Cable"" Trans. of IEE Japan. 111-B. 454-460 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Mizuno, T. Ohe, K. Nomizu, H. Muneyasu, M. Nagao, M. Kosaki, N. Shimizu & K. Horii: ""Evaluation of Ethylene Propylene Rubber as an Electrical Insulation Material of Superconducting Cable"" 3rd International Conference on Properties and Applications of Dielectric Materials Tokyo, Japan. 317-321 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Nagano, M. Kosaki, Y. Mizuno & M. Ono: ""Distinctive Electrical Breakdown of Polar Polymeric Films in Cryogenic Temperature Region"" 7th International Symposium on High Voltage Engineering, Dresden, Germany. 139-142 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Mizuno, H. Furukawa, M. Iizuka, M. Nagao & M. Kosaki: ""Effect of Magnetic Field on Electrical Breakdown of Polyethylene Film/Liquid Nitrogen Composite Insulation System"" Conference on Electrical Insulation and Dielectric Phenomena, Knoxville, U. S. A.603-608 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Kosaki, M. Nagao, Y. Mizuno, N. Shimizu & K. Horii: ""Development of Polymer Insulated Superconducting Cable"" 3rd International Toki Conference on Plasma Physics and Controlled Nuclear Fusion, Toki, Japan. SP-3 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Nagao, Y. Mizuno & M. Kosaki: ""Electrical Breakdown of Polar Polymeric Films in Cryogenic Temperature Region"" Trans. of IEE Japan. 112-A. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Mizuno, M. Iizuka, Y. Mitsuyama, M. Nagao, M. Kosaki, N. Shimizu & K. Horii: ""Performance of Extruded Ethylene-propylene Rubber Insulated Cryogenic Power Cable"" 1992 IEEE International Symposium on Electrical Insulation, Baltimore, U. S. A.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Mizuno, M. Nagao, M. Kosaki, N. Shimizu & K. Horii: ""Evaluation of Ethylene Propylene Rubber as Solid Electrical Insulating Material of Superconducting Cable"" IEEE Trans. on Electrical Insulation.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Kosaki, M. Nagao, Y. Mizuno, N. Shimizu & K. Horii: ""Development of Extruded Polymer Insulated Superconducting Cable"" Cryogenics.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Mizuno, Y. Mitsuyama, M. Iizuka, M. Nagao & M. Kosaki: ""Dielectric and Electric Properties of Ethylene-propylene Rubber in Cryogenic Temperature Region"" Cryogenic Engineering.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 小崎 正光他: "押出しエチレンプロピレンゴム絶縁超電導ケ-ブルの開発に関する研究" 電気学会論文誌B. 111. 454-460 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Mizuno et.al.: "Evaluation of Ethylene Propylene Rubber as an Electrical Insulation Material of Superconducting Cable" 3rd International Conference on Properties and Applications of Dielectric Materials,Tokyo,Japan. 1. 317-321 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Nagao et.al.: "Distinctive Electrical Breakdown of Polar Polymeric Films in Cryogenic Temperature Region" 7th International Symposium on High Voltage Engineering,Dresden,Germany. 2. 139-142 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Y.Mizuno et.al.: "Effect of Magnetic Field on Electrical Breakdown of Polyethylene Film/Liquid Nitrogen Composite Insulation System" Conference on Electrical Insulation and Dielectric Phenomena,Knoxville,U.S.A.603-608 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Kosaki et.al.: "Development of Polymer Insulated Superconducting Cable" 3rd International Toki Conference on Plasma Physics and Controlled Nuclear Fusion,Toki,Japan. 3 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 長尾 雅行他: "極低温領域における有極性高分子フィルムの絶縁破壊" 電気学会論文誌A. 112. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 大江 敏男,水野 幸男,長尾 雅行,小崎 正光: "超電導ケ-ブルへの適用を考慮した各種高分子電気絶縁材料の液体窒素温度における機械的特性" 低温工学. 25. 165-171 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 水野 幸男,大江 敏男,野水 景三,長尾 雅行,小崎 正光: "超電導ケ-ブルの押出し絶縁体としてのエチレンプロピレンゴムの総合的評価" 第23回電気絶縁材料シンポジウム. 109-112 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 小野 雅彦,水野 幸男,長尾 雅行,小崎 正光: "極低温領域における有極性高分子フィルムの絶縁破壊と空間電荷効果" 電気学会放電・絶縁材料合同研究会 EDー90ー120 EIMー90ー89. (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.Mizuno,T.Ohe,K.Nomizu,H.Muneyasu,M.Nagao,M.Kosaki,N.Shimizu,K.Horii: "Evaluation of Ethylene Propyrene Rubber as an Electrical Insulation Material of Superconducting Cable" 3rd International Conference on Properties and Applications of Dielectric Materials,Tokyo,Japan. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Kosaki,M.Nagao,Y.Mizuno,N.Shimizu,K.Horii: "Development and Test of Extruded Polymer Insulated Superconducting Cable" Proc.6th International Symposium on High Voltage Engineering 13.24. 1-4 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 野水景三,水野幸男,長尾雅行,小崎正光: "極低温領域におけるエチレン-プロピレンゴムの電気的特性" 電気学会絶縁材料研究会資料EIM-89-104. (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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