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Influence of Volcanic Ash fall on Distribution Lines

Research Project

Project/Area Number 05650281
Research Category

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

Allocation TypeSingle-year Grants
Research Field 電力工学・電気機器工学
Research InstitutionKagoshima University

Principal Investigator

IRISA Toshiyuki  Kagoshima University, Faculty of Engineering, Professor, 工学部, 教授 (70041522)

Co-Investigator(Kenkyū-buntansha) KAWABATA Shuma  Kagoshima University, Faculty of Engineering, Research Associate, 工学部, 助手 (00244260)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1994: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1993: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsDistribution line / Insulator / Volcanic ashes / Leakage current / Pollution / Corona / 火山灰の電気特性 / 火山灰のイオン成分 / 火山灰汚損がいし
Research Abstract

In the area having heavy volcanic ashfall, the distribution line trouble has been caused. It seems owing to the increase of the leakage current on the insulators polluted by volcanic ashes. We examine the factors which increase the leakage current and decrease the fluctuations of it in order to abate the distribution line trouble caused by the volcanic ashfall. For this purpose, to begin with, the electric characteristics are in detail examined, for example, the chemical compositions of the volcanic ashes and the electric conductivity, the ion concentration etc.of the volcanic ashes solution. Then on these basic data, the dependence of the leakage current on the various conditions of insulators and high voltage cut-out bases and arresters polluted by volcanic ashes is experimentally investigated. As the result, the following matters are elucidated :
1. The leakage currents are increased and in addition the fluctuations of them are increased involving the generation of corona only when t … More he ashes accumulated in the ribs of insulators become wet.
2. A combination of the strain insulator with the anti-pollution type insulator restrains the generation of a corona, even if the insulators are polluted by the volcanic ashes. This combination enables us to limit the fluctuations of the zero-phase-sequence voltage and to diminish the service interruption problems caused by the operation of the circuit breaker.
3. The volcanic ashes increases the leakage current in the case of the strain insulator, the high voltage cut-out base and the arrester but littel leakage occurs in the case of the pin insulator.
4. The observation of a corona makes us presuppose that the potential gradient in the ribs of the strain insulator is large.Accordingly, it follows that in order to decrease leakage currents, the strain insulator should be lengthened in the inner-cylinder within the insulator, as well as in the anti-pollution type insulator.
In addition, the policies for abating the troubles also are got such as the determination of the most suitable direction, numbers and insulator types. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 川畑秋馬他: "火山灰汚損がいしの漏れ電流特性" 電気学会論文誌B. 115-B. (掲載決定) (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 入佐俊幸他: "桜島火山降灰による人工汚損耐張がいしの漏れ電流" 平成5年度電気学会九州支部連合大会論文集. 443 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 上妻生朗他: "火山灰汚損耐張がいしの漏れ電流特性(II)" 平成6年電気学会全国大会論文集(10). 69 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 上妻生朗他: "火山灰の高圧カットアウトの漏れ電流特性に及ぼす影響" 平成6年度電気学会九州支部連合大会論文集. 273 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 川畑秋馬: "桜島火山降灰の配電線路への影響" 鹿児島大学工学部研究報告. 第36号. 65-71 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shuma Kawabata et al.: ""Leakage Current Characteristics of Insulator Polluted by Volcanic Ashes"" The Transaction of The Institute of Electrical Engineers of Japan. Vol.115-B (to be published). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Toshiyuki Irisa et al.: ""Leakage Current Characteristics of Insulator Polluted by Volcanic Ashes from Mt.Sakurajima"" Record of 1993 Joint Conference of Electrical and Electronics Engineers in Kyushu. 443 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ikuro Kouzuma et al.: ""Leakage Current Characteristics of Strain Insulator Polluted by Volcanic Ashes (II)"" 1994 National convention Record of The Transaction of The Institute of Electrical Engineers of Japan. (10). 69 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ikuro Kouzuma et al.: ""Leakage Current Characteristics of high voltage cut-out bases polluted by Volcanic Ashes"" Record of 1994 Joint Conference of Electrical and Electronics Engineers in Kyushu. 273 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Shuma Kawabata et al.: ""Influence of Volcanic Ash Fall from Mt.Sakurajima on Distribution Lines"" The Research Reports of The Faculty of Engineering, Kagoshima University. No.36. 65-71 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 入佐俊幸: "桜島火山降灰による人工汚損耐張がいしの漏れ電流" 電気学会九州支部連合大会論文集. 443 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 上妻生朗: "火山灰汚損耐張がいしの漏れ電流特性(II)" 電気学会全国大会論文集(10). 69 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 上妻生朗: "火山灰の高圧カットアウトの漏れ電流特性に及ぼす影響" 電気学会九州支部連合大会論文集. 273 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 川畑秋馬: "桜島火山降灰の配電線路への影響" 鹿児島大学工学部研究報告. 第36号. 65-71 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 入佐 俊幸: "桜島火山降灰による人工汚損耐張がいしの漏れ電流" 電気関係学会九州支部連合大会論文集. 443 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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