• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Evaluation of equivalent insulation test voltage and reliability of electrical insulation of HTS power devices

Research Project

Project/Area Number 16360140
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 InstitutionKYUSHU UNIVERSITY

Principal Investigator

HARA Masanori  KYUSHU UNIVERSITY, Graduate School of Information Science and Electrical Engineering, Professor, 大学院・システム情報科学研究院, 教授 (30039127)

Co-Investigator(Kenkyū-buntansha) SUEHIRO Junya  KYUSHU UNIVERSITY, Graduate School of Information Science and Electrical Engineering, Associate Professor, 大学院・システム情報科学研究院, 助教授 (70206382)
IMASAKA Kiminobu  KYUSHU UNIVERSITY, Graduate School of Information Science and Electrical Engineering, Research Associate, 大学院・システム情報科学研究院, 助手 (40264072)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥13,900,000 (Direct Cost: ¥13,900,000)
Fiscal Year 2005: ¥4,600,000 (Direct Cost: ¥4,600,000)
Fiscal Year 2004: ¥9,300,000 (Direct Cost: ¥9,300,000)
Keywordsequivalent insulation test voltage / electrical insulation / high temperature superconducting power apparatus / medium factor / partial discharge / turn-to-turn coil / cryogenic temperature / insulation reliability / 高温超伝導電力機器 / 等価絶縁試験電圧 / 絶縁信頼性 / 高温超伝導コイル / パンケーキ型モデルコイル / 常温等価絶縁試験法 / 絶縁最弱点部
Research Abstract

In this research, the equivalent high voltage testing method at room temperature for the promising high temperature superconducting (HTS) power apparatus at the stages of development, manufacturing and shipment was studied. A idea of the equivalent high voltage test in atmospheic air room temperature for the HTS power apparatus with coil structure is proposed to ensure the insulation reliability of the superconducting power apparatus.
The proposed method for the evaluation of the equivalent test voltage is based on the idea of no partial discharge occurrence during the operation of the superconducting apparatus. The equivalent test voltage can be obtained from the two medium factors with respect to the potential distribution along the coil winding and the partial discharge (PD) inception voltage. The medium factor relating to the PD inception depends on the coil geometry and the state of the surrounding media at cryogenic temperature. The medium factor was successfully obtained by experiments and calculations for the turn-to-turn coil sample. The experimental values of the medium factor was smaller than the theoretical ones in the present test sample for the turn-to-turn coil structure and therefore it was more desirable to adopt the theoretical value of the medium factor.
It was pointed out that the medium factor of the coil-to-coil insulation element should be determined from that of its insulation weakest part, which was triple junction or solid insulation surface. It was recommended for the safest side of the insulation design that the equivalent insulation test voltage at room temperature for the finished HTS apparatus should be determined by the maximum value of the medium factor selected from those of the insulation elements, and then that additional insulation distance is needed in at least one of the insulation elements for preventing discharge activities at room temperature.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (16 results)

All 2005 2004

All Journal Article (16 results)

  • [Journal Article] DC Breakdown voltage Characteristics in the Presence of Metallic particles in Saturated Liquid Helium2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Proc. of 2005 IEEE Int. Conf. on Dielectric Liquids

      Pages: 373-376

    • NAID

      10014421618

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Medium Factors of Electrical Insulation Systems in High Temperature Superconducting Power Apparatus wit Coil Structure for Equibalent Ac Withstand Voltage Test at Room Temperature2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics Vol.45

      Pages: 705-717

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] DC Breakdown Voltage Characteristics in the Presence of Metallic particles in Saturated Liquid Helium2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Proc. of 2005 IEEE Int.Conf. on Dielectric Liquids

      Pages: 373-376

    • NAID

      10014421618

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Medium Factors of Electrical Insulation Systems in High Temperature Superconducting Power Apparatus with Coil Structure for Equivalent Ac Withstand Voltage Test at Room Temperature2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics 45

      Pages: 705-717

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] DC Breakdown Voltage Characteristics in the Presence of Metallic particles in Saturat ed Liquid Helium2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Proc.of 2005 IEEE Int.Conf.on Dielectric Liquids

      Pages: 373-376

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Medium Factors of Electrical Insulation Systems in High Temperature Superconducting Power Apparatus with Coil Structure for Equivalent Ac Withstand Voltage Test at Room Temperature2005

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics Vol.45

      Pages: 705-717

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Determination Method of Equivalent Insulation Test Voltage at Room Temperature for High Temperature Superconducting Power Apparatus with Coil Structure2004

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics Vol.44, No.4

      Pages: 229-239

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Observation of Residual Surface Charge Distribution inside an Artificial Air-Filled Void due to Partial Discharge Activities at Room and Liquid Nitrogen Temperatures2004

    • Author(s)
      Takashi Kurihara et al.
    • Journal Title

      Proc. of the 2004 IEEE Int. Conf. on Soild Dielectrics Vol.1, 0-7803-8348-6

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Progress and Research Status of Electrical Insulation in High Temperatures Superconducting Power Devices2004

    • Author(s)
      Masanori Hara
    • Journal Title

      Proc. of 12th Asian Conf. on Electrical Discharge

      Pages: 1-9

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Medium Factor of Coil-to-Coil Insulation System in High Temperature Superconducing Pancake Coil for Determination of Equivalent Insulation Test Voltage2004

    • Author(s)
      Takashi Kurihara et al.
    • Journal Title

      Proc. of 12th Asian Conf. on Electrical Discharge

      Pages: 695-698

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Determination Method of Equivalent Insulation Test Voltage at Room Temperature for High Temperature Superconducting Power Apparatus with Coil Structure2004

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics 44,4

      Pages: 229-239

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Observation of Residual Surface Charge Distribution inside an Artificial Air-Filled Void due to Partial Discharge Activities at Room and Liquid Nitrogen Temperatures2004

    • Author(s)
      Takashi Kurihara et al.
    • Journal Title

      Proc. of the 2004 IEEE Int.Conf. on Solid Dielectrics 1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Progress and Research Status of Electrical Insulation in High Temperature Superconducting Power Devices2004

    • Author(s)
      Masanori Hara
    • Journal Title

      Proc. of 12th Asian Conf. on Electrical Discharg

      Pages: 1-9

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Medium Factor of Coil-to-Coil Insulation System in High Temperature Superconducting Pancake Coil for Determination of Equivalent Insulation Test Voltage2004

    • Author(s)
      Takashi Kurihara et al.
    • Journal Title

      Proc. of 12th Asian Conf. on Electrical Discharge

      Pages: 695-698

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Determination Method of Equivalent Insulation Test Voltage at Room Temperature for High Temperature Superconducting Power Apparatus with Coil Structure2004

    • Author(s)
      Masanori Hara et al.
    • Journal Title

      Cryogenics Vol.44,No.4

      Pages: 229-239

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Observation of Residual Surface Charge Distribution inside an Artificial Air-Filled Void due to Partial Discharge Activities at Room and Liquid Nitrogen Temperatures2004

    • Author(s)
      Takashi Kurihara et al.
    • Journal Title

      Proc. of the 2004 IRRR Int.Conf. on Solid Dielectrics Vol.1,No.0-7803-8348-6

    • Related Report
      2004 Annual Research Report

URL: 

Published: 2004-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi