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IMPROVEMENT OF HIGH VOLTAGE DC INSULATING SYSTEM AND ITS LIFE-TIME ESTIMATION

Research Project

Project/Area Number 13450112
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 InstitutionNAGOYA UNIVERSITY

Principal Investigator

MIZUTANI Teruyoshi  NAGOYA UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, PROFESSOR, 工学研究科, 教授 (70023249)

Co-Investigator(Kenkyū-buntansha) KANEKO Kazue  NAGOYA UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, RESEARCH ASSOCIATE, 工学研究科, 助手 (70135309)
MORI Tatsuo  NAGOYA UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, ASSOCIATE PROFESSOR, 工学研究科, 助教授 (40230073)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,700,000 (Direct Cost: ¥14,700,000)
Fiscal Year 2002: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2001: ¥9,600,000 (Direct Cost: ¥9,600,000)
KeywordsDC INSULATING SYSTEM / SPACE CHARGE / LIFETIME ESTIMATION / PARTIAL DISCHARGE / AGING / TREEING / POLIIMIDE / POLYETHYLENE / 電気トリー / 高分子絶縁材料 / 寿命評価
Research Abstract

BY USING THE SPACE CHARGE DISTRIBUTION PROBING SYSTEM, THE RELATIONSHIP BETWEEN SPACE CHARGE CHARACTERISTICS AND PERFORMANCE OF DC INSULATION SYSTEM WERE STUDIED QUANTITATIVELY. A GUIDELINE FOR THE DEVELOPMENT OF DC SOLID-INSULATING MATERIAL WAS OBTAINED. THE MAIN RESULTS ARE AS FOLLOWS.
1. SPACE CHARGE CHARACTERISTICS AND DC BREAKDOWN STRENGTH OF LOW-DENSITY POLYETHYLENE (LDPE) AND ITS BLEND POLYMERS WHICH ARE REGARDED AS NEW MATERIALS FOR HIGH-VOLTAGE DC POWER CABLES, ARE CLOSELY RELATED TO MORPHOLOGY, ADDITIVE, AND BLENDING OF POLYPROPYLENE. FURTHERMORE, THE SPACE CHARGE PHENOMENA CAN BE CONTROLLED BY CHANGING DENSITY OF LDPE.
2. SPACE CHARGE IN LDPE IS GOVERNED BY CARRIERS INJECTED FROM THE ELECTRODES. THE SEMI-CONDUCTIVE ELECTRODE CAN INJECT CARRIERS MORE EASILY THAN THE METAL ELECTRODE.
3. THE SPACE CHARGE PHENOMENA ARE IN POLYIMIDE, POLYETHYLENE TEREPHTHALATE AND TEFLON FEP WERE CLARIFIED. ESPECIALLY, SPACE CHARGE IN POLYIMIDE WAS ENHANCED BY WATER ABSORBED ON THE SURFACE.
A NEW DIAGNOSTIC SYSTEM FOR INSULATION DEGRADATION WAS CONSTRUCTED WITH THE PARTIAL DISCHARGE (PD) MEASUREMENT SYSTEM AND SPECTRUM ANALYZER. BY USING THE SYSTEM AND A HIGH-SPEED IMAGE INTENSIFIER THE FOLLOWING RESULTS WERE OBTAINED.
4. PD PATTERNS AND PD CURRENTS AND THE FREQUENCY SPECTRA OF A VOID IN LDPE WERE MEASURED WITH TIME BY USING THE DIAGNOSTIC SYSTEM THE AGING MECHANISMS WERE ALSO DISCUSSED. THROUGH THESE RESULTS, PD WAS POINTED OUT TO BE POWERFUL FOR THE LIFETIME ESTIMATION OF POLYMER INSULATING MATERIALS.
5. THE CHANGES WITH TIME OF THE PD CHARACTERISTICS AND LIGHT EMISSION IMAGES OF TREE CHANNELS WERE CLOSELY RELATED TO THE PD DEGRADATION OF POLYMERIC MATERIALS. THESE RESULTS WERE USEFUL TO CLARIFY THE MECHANISMS FOR THE INCEPTION AND DEVELOPMENT OF ELECTRICAL TREES AND ALSO TO IMPROVE THE LIFETIME ESTIMATION OF POLYMERIC MATERIALS.
THESE RESULTS GREATELY CONTRIBUTED TO THE IMPROVEMENT OF THE PERFORMANCE OF DC INSULATING SYSTEMS AND THE RELIABILITY OF LIFETIME ESTIMATION.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] 新村健太, 水谷照吉, 兼子一重, 張潮, 森竜雄, 石岡貢: "異なる低密度ポリエチレン界面における空間電荷挙動"電気学会論文誌. 122-A・3. 322-327 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.Zhang, T.Mizutani, K.Kaneko, T.Mori, M.Ishioka: "Space Charge Behaviors of Low-Density Polyethylene Blended with Polypropylene Copolymer"Polymer. 43・8. 2261-2266 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.-S.Kim, T.Mizutani: "Change in PD Pulse Shape with Ageing"電気学会論文誌. 122-A・5. 501-506 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.Zhang, T.Mizutani, K.Kaneko, M.Ishioka: "Decay of Space Charge in LDPE and its Blend Polymer"Journal of Physics D : Applied Physics. 35・15. 1875-1879 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.-S.Kim, T.Mizutani: "Correlation between Change in PD Current Shapes and Ageing by the Oxidation of Void Surface"電気学会論文誌. 122-A・11. 983-986 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.Mizutani: "Electrical Properties of Polymers : Space-Charge Behaviour in Insulating Polymers under High-Voltage Direct Current"Polymer International. 51・11. 1164-1171 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.SINMURA, T,MIZUTANI, K.KANEKO, C.ZHANG, T.MORI, M.ISHIOKA: "SPACE CHARGE BEHAVIOR NEAR THE INTERFACE BETWEEN DIFFERENT LOW DENSITY POLYETHYLENE"TRANSACTIONS OF IEE JAPAN. 122-A-3. 322-327 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.ZHANG, T.MIZUTANI, K.KANEKO, T.MORI, M.ISHIOKA: "SPACE CHARGE BEHAVIORS OF LOW-DENSITY POLYETHYLENE BLENDED WITH POLYPROPYLENE COPOLYMER"POLYMER. 43-8. 2261-2266 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.-S.KIM AND T.MIZUTANI: "CHANGE IN PD PULSE SHAPE WITH AGEING"TRANSACTIONS OF IEE JAPAN. 122-A-5. 501-506 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.ZHANG, T.MIZUTANI, K.KANEKO AND M.ISHIOKA: "DECAY OP SPACE CHARGE IN LDPE AND ITS BLEND POLYMER"JOURNAL OF PHYSICS D: APPLIED PHYSICS. 35-15. 1875-1879 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] C.-S.KIM, T.MIZUTANI: "CORRELATION BETWEEN CHANGE IN PD CURRENT SPHAPES AND AGEING BY THE OXIDATION OF VOID SURFACE"TRANSACTIONS OF IEE JAPAN. 122-A-11. 983-986 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] T.MIZUTANI: "ELECTRICAL PROPERTIES OF POLYMERS: SPACE-CHARGE BEHAVIOR IN INSULATING POLYMERS UNDER HIGH-VOLTAGE DIRECT CURRENT"POLYMER INTERNATIONAL. 51-11. 1164-1171 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 新村健太, 水谷照吉, 兼子一重, 張潮, 森竜雄, 石岡貢: "異なる低密度ポリエチレン界面における空間電荷挙動"電気学会論文誌. 122-A・3. 322-327 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.Zhang, T.Mizutani, K.Kaneko, T.Mori, M.Ishioka: "Space Charge Behaviors of Low-Density Polyethylene Blended with Polypropylene Copolymer"Polymer. 43・8. 2261-2266 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.-S.Kim, T.Mizutani: "Change in PD Pulse Shape with Ageing"電気学会論文誌. 122-A・5. 501-506 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.Zhang, T.Mizutani, K.Kaneko, M.Ishioka: "Decay of Space Charge in LDPE and its Blend Polymer"Journal of Physics D : Applied Physics. 35・15. 1875-1879 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.-S.Kim, T.Mizutani: "Correlation between Change in PD Current Shapes and Ageing by the Oxidation of Void Surface"電気学会論文集. 122-A・11. 983-986 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Mizutani: "Electrical Properties of Polymers : Space-Charge Behaviour in Insulating Polymers under High-Voltage Direct Current"Polymer International. 51・11. 1164-1171 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] C.Zhang, T.Mori, T.Mizutani, M.Ishioka, Y.Cheng: "Morphology and Electrical Breakdown Properties of LEPE-Polypropylene Copolymer Blends"Applied Physics Letters. 79・23. 3839-3841 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] C.Zhang, K.Kaneko, T.Mizutani: "Temperature Increase and Charging Current in Polyethylene Film During Application of High Voltage"Applied Physics Letters. 79・23. 3839-3841 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 新村健太, 水谷照吉, 兼子一重, 張潮, 森竜雄, 石岡貢: "異なる低密度ポリエチレン海面における空間電荷挙動"電気学会論文誌. 122-A・3. 322-327 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] C.Zhang, T.Mizutani, K.Kaneko, T.Mori, M.Ishioka: "Space Charge Behaviors of Low Density Polyethylene Blended with Polypropylene Copolymer"Polymer. 43. 2261-2266 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] C.-S.Kim, T.Mizutani: "Change in PD Pulse Shape with Ageing"Trans. IEE Jpn.. 122-A・5. (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Mizutani: "Electrical Properties of Polymers : Space Charge Behavior in Insulating Polymers under High-Voltage DC"Polymer International. 51. (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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