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Current dependence of discharge phase and emission spectra on wet polluted surfaces

Research Project

Project/Area Number 16K06231
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionNagasaki University

Principal Investigator

YAMASHITA Takahiko  長崎大学, 工学研究科, 教授 (50182499)

Co-Investigator(Kenkyū-buntansha) 古里 友宏  長崎大学, 工学研究科, 助教 (70734002)
Research Collaborator SADAMATSU Takahiro  
TAHARA Masaki  
ISHIMOTO Ryo  
MORITA Kento  
KONISHI Ryo  
KUROKAWA Takafumi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords汚損沿面放電 / 局部放電 / 発光スペクトル / 放電形態 / ドライバンド放電 / 電解質水溶液 / 電気エネルギー工学 / 電力輸送
Outline of Final Research Achievements

The mode of dry-band discharge on wet polluted insulators change from corona or spark to dry-band arc with increasing of the discharge current. The author revealed that the characteristics of the dry-band discharge change from glow-like to arc-like, and the critical current of the transition of discharge mode is in the range between 2 to 4 mA irrespective of the kind of electrolyte and the conductivity. The spectrum intensity originated from Nitrogen in the air was revealed to be independent of the discharge transition, however, the spectrum intensity originated from the electrolyte strongly depend on the kind of electrolyte and to increase with the discharge current. The increasing rate was found to depend on the kind of the electrolyte.

Academic Significance and Societal Importance of the Research Achievements

これまで圧程度は分かっていたものの,その閾値が明らかにされていなかった汚損沿面放電のコロナや火花から局部アークへの遷移の閾値を明らかにした。また,ポリマーがいし材料の撥水性喪失特性試験における試験終了の判定基準の物理的意味を明確にした。ポリマーがいし材料の撥水性喪失特性試験はCIGRE(国際大電力会議)を中心に検討が行われており,試験終了要件として2mA以上の連続電流が4秒以上現れることが採用されている。この要件はドライバンド放電が継続して現れることを意味することを明らかにしたことは意義がある。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (14 results)

All 2019 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (11 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Critical current for phase shift of dry-band discharge on wet polluted insulators2019

    • Author(s)
      Yamashita Takahiko、Furusato Tomohiro、Konishi Ryo、Kurokawa Takafumi、Yaji Kohei
    • Journal Title

      Journal of Electrostatics

      Volume: 97 Pages: 51-57

    • DOI

      10.1016/j.elstat.2018.11.008

    • NAID

      120006987863

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A New Evaluation Method of Contact Area at Interface between Pulsed Surface Discharge and Water2018

    • Author(s)
      T. Furusato, D. Obata, Y. Yamamoto, T. Yamashita
    • Journal Title

      IEEE Transactions on Dielectrics and Electrical Insulation

      Volume: 46 Issue: 6 Pages: 2079-2084

    • DOI

      10.1109/tps.2018.2837091

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of Series Resistance on Dry-Band Discharge Characteristics on Wet Polluted Insulators2018

    • Author(s)
      T. Yamashita, R. Ishimoto and T. Furusato
    • Journal Title

      IEEE Transactions on Dielectrics and Electrical Insulation

      Volume: 25 Issue: 1 Pages: 154-161

    • DOI

      10.1109/tdei.2018.007005

    • NAID

      120006988031

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 電圧電流波形解析による水溶液上パルス沿面放電の進展特性の評価2019

    • Author(s)
      山本遥太,古里友宏,坂本拓也,是枝弘行,山下敬彦
    • Organizer
      電気学会 誘電・絶縁材料/放電・プラズマ・パルスパワー/高電圧合同研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 汚損湿潤沿面上のドライバンド放電の放電特性に対する電解質の種類と抵抗率の影響2019

    • Author(s)
      森田健斗,小西凌,石本燎,是枝弘行,古里友宏,山下敬彦
    • Organizer
      電気学会 誘電・絶縁材料/放電・プラズマ・パルスパワー/高電圧合同研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Efficient production conditions of OH radicals generated by pulsed surface discharge plasma on water2018

    • Author(s)
      T. Furusato, Y. Yamamoto, T. Sakamoto, K. Oura, Y. Matsuda, and T. Yamashita
    • Organizer
      ESCAMPIG XXIV
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 汚損湿潤面上のドライバンド放電の放電特性に対する電解質水溶液の抵抗率の影響2018

    • Author(s)
      小西凌,古里友宏,森田健斗,山下敬彦
    • Organizer
      平成30年度 電気・情報関係学会九州支部連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] シュリーレン法を用いた汚損湿潤面上におけるドライバンド放電の衝撃波の観測2018

    • Author(s)
      黒川崇文,石本燎,古里友宏,山下敬彦
    • Organizer
      平成30年度 電気・情報関係学会九州支部連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of Water Depth on Propagation Characteristics of Surface Discharge on Water Generated by Pulsed Power2017

    • Author(s)
      S. Yamashita, T. Furusato, H. Koreeda, T. Fujishima, T. Yamashita
    • Organizer
      19th IEEE International Conference on Dielectric Liquids
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 電圧電流波形解析による水上パルス沿面放電と水溶液の等価的な接触面積の推定法2017

    • Author(s)
      山本遥太,山下翔太郎,古里友宏,是枝弘行,藤島友之,山下敬彦
    • Organizer
      電気学会プラズマ・パルスパワー・放電合同研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] ドライバンド放電の放電形態の時間的変化と直列抵抗の関係2017

    • Author(s)
      森田健斗, 石本燎,田原正基,古里友宏,山下敬彦
    • Organizer
      電気・情報関係学会九州支部連合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ドライバンド放電の発光スペクトル特性と直列抵抗の関係2017

    • Author(s)
      石本燎,森田健斗,田原正基,古里友宏,山下敬彦
    • Organizer
      電気・情報関係学会九州支部連合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 滞留性局部放電のスペクトル特性および気体温度に対する電流の影響2016

    • Author(s)
      田原正基,古里友宏,是枝弘行,藤島友之,山下敬彦
    • Organizer
      電気学会 基礎・材料・共通部門大会
    • Place of Presentation
      福岡県北九州市
    • Year and Date
      2016-09-05
    • Related Report
      2016 Research-status Report
  • [Presentation] Evaluation of Rotaitional and Vibrational Temperature of Nanosecond Pulsed Surface Discharge on Water2016

    • Author(s)
      T. Sadamatsu, T. Furusato, T. Fujishima and T. Yamashita
    • Organizer
      IEEE Power Modulator and High Voltage Conference
    • Place of Presentation
      San Francisco CA USA
    • Year and Date
      2016-06-05
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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