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Suppression Method of Disruptive Vacuum Breakdown for Next-Generation DC Transmission and Distribution Power Network

Research Project

Project/Area Number 18K18845
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionSaitama University

Principal Investigator

Inada Yuki  埼玉大学, 理工学研究科, 助教 (00735532)

Co-Investigator(Kenkyū-buntansha) 熊田 亜紀子  東京大学, 大学院工学系研究科(工学部), 教授 (20313009)
Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywords真空遮断器 / 絶縁破壊 / 電力機器
Outline of Final Research Achievements

We developed a shadowgraph imaging system with a ~100-ns time resolution and ~1-μs framing rate, which enabled the world first capturing of a vacuum breakdown phenomenon induced by a microparticle. In our series of observations, the vacuum breakdown was found to be caused by two types of microparticles: those with diameters of ~100μm and ~10μm. Further, all the particle-induced vacuum breakdowns occurred at the time of particle collision with the negative electrode. In addition, the decrease in the particle size was not observed during the particle flight between the electrodes or at the particle collision with the negative electrode.

Academic Significance and Societal Importance of the Research Achievements

微小金属粒子に起因した真空内での絶縁破壊現象は、理学・工学・医学を含む諸分野において喫緊の克服課題となっている。本絶縁破壊現象を解明し、その抑制策を明らかにすることが出来れば、電力系統に実装されている真空遮断器とばれる電力機器や、素粒子物理学の進展を牽引する粒子加速器、無尽蔵なエネルギ供給を実現する核融合炉、様々な治療や医療診断に使用されている重粒子線源をさらに小型化・高エネルギ化することが可能である。これにより例えば電力機器の分野では、現在多用されている、環境負荷の高いSF6ガス遮断器を真空遮断器で代替することが可能となり、環境と調和したクリーンな電力系統が実現可能となる。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2020 2019 2018

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Influence of CuCr Electrode Composition on Two-Dimensional Electron and Metal Vapor Density Distribution over Vacuum Arc2020

    • Author(s)
      Inada Yuki、Kikuchi Ryo、Nagai Hiroyuki、Kumada Akiko、Hidaka Kunihiko、Maeyama Mitsuaki
    • Journal Title

      Journal of Physics D: Applied Physics

      Volume: 53 Issue: 30 Pages: 305201-305201

    • DOI

      10.1088/1361-6463/ab83bd

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Systematic Comparison of Intense-Mode Vacuum Arc Between CuCr and AgWC Electrode by Using Various Optical Diagnostics2020

    • Author(s)
      Inada Yuki、Kikuchi Ryo、Nagai Hiroyuki、Yamano Yasushi、Maeyama Mitsuaki、Iwabuchi Hiroyuki、Kumada Akiko、Hidaka Kunihiko、Kaneko Eiji
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 48 Issue: 6 Pages: 1-13

    • DOI

      10.1109/tps.2020.2992675

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Late Breakdowns Caused by Microparticles After Vacuum Arc Interruption2019

    • Author(s)
      Ejiri Haruki、Kumada Akiko、Hidaka Kunihiko、Taguchi Yuki、Inada Yuki、Yamano Yasushi、Iwabuchi Hiroyuki、Kaneko Eiji
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 47 Issue: 8 Pages: 3392-3399

    • DOI

      10.1109/tps.2019.2917379

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Initiation Process of Vacuum Breakdown Between Cu and CuCr Electrodes2019

    • Author(s)
      Nagai Hiroyuki、Kikuchi Ryo、Inada Yuki、Matsuoka Shigeyasu、Shioiri Tetsu、Kumada Akiko、Hidaka Kunihiko
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 47 Issue: 11 Pages: 5191-5197

    • DOI

      10.1109/tps.2019.2947444

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Late Dielectric Breakdown Phenomenon Caused by Microparticles Released after Current Interruption2018

    • Author(s)
      Yuto Hachiman, Fumiya Oshiro, Yuma Nagayo, Eiji Kaneko, Yuki Inada, Yuki Taguchi, Yasushi Yamano, Mitsuaki Maeyama, Yusuke Kitabayashi, Hiroyuki Iwabuchi, Haruki Ejiri, Akiko Kumada and Kunihiko Hidaka
    • Organizer
      28th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-07-25   Modified: 2021-02-19  

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