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1997 Fiscal Year Final Research Report Summary

Deterioration of Insulation Performance and Texicity on Discharge Decomposition Products in Gaseous Dielectric Systems

Research Project

Project/Area Number 07455125
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 InstitutionFukuoka University

Principal Investigator

NISHIJIMA Kiyoto  Fukuoka University, Faculty of Engineering, Professor, 工学部, 教授 (40117205)

Co-Investigator(Kenkyū-buntansha) IZAWA Yasuji  Fukuoka University, Faculty of Engineering, Assistant, 工学部, 助手 (10131806)
TAKAHASHI Akihiko  Kyushu University, School of Health Sciences, Assistant Professor, 医療技術短大部, 助教授 (30187992)
Project Period (FY) 1995 – 1997
KeywordsSFG gas insulation / toxic dischatge-decomposition products / Computer code of laser-induced plasma / discharge controlling with a laser / progressive change of dielectric performance / predictive maintenance / greenhouse warming effect
Research Abstract

We have investigated the toxicity measurement on discharge decomposition products in gaseous dielectric systems in which SFG gas is used and its deterloration effect to those insulation performance. In order tio change the nature of toxic discharge decomposition products, we have had a try on the plasma calsulating code which is produced by laser and the corona discharge which are controlled by laser.
From above we can complete those researches as following :
(1) In SFG gas, the sorts and quantity of toxic decomposition products formed by corona discharge are depended strongly on the impurities such as H2O and O2 which are mixed on the beginning of the poring of SFG gas.
(2) Those toxic decomposition products can be eliminated by an absorbent as Zeelite. But solid decomposition products can not be eliminated by this method. It relates strongstly with the deterioration of electrode surface.
(3) Those gases don't have much connection with electrical insulatio performance directly, but those gases will react with electrode surface, and as a consequence of those, the shape of electrode changes and the insulation performance diteriorates.
(4) In air, the calsulating code of plasma process with are irradiated by pulsed laser have been developed.
(5) The technology of changing gaseous nature by the method of low-tenperature and high density plasma (streamer) which is produced by laser in the DC glow-corona discharges is possible.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 西嶋 喜代人・登本 隆司、田口 泰貴: "SF_6ガス直流コロナ放電での分解生成物と電極表面の経時変化" 電気学会研究会資料. ED-96-12. 105-114 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西嶋 喜代人・登本 隆司、田口 泰貴: "SF_6ガス直流コロナ放電による分解生成物と放電特性の経時変化" 電気学会論文誌A. 117巻1号. 88-89 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 西嶋 喜代人・田口 泰貴: "SF_6ガス電気絶縁システムの有毒分解生成物とその計測技術" 電気学会研究会資料. ED-97-17. 19-24 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 生澤 泰二・楊 建波、西嶋 喜代人: "線-平板空気ギャップの正極性グローコロナ放電からのレーザ誘導カ-テン状ストリーマコロナ" 電気学会論文誌A. 117巻11号. 1141-1142 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡部 真・西嶋 喜代人: "スパーク放電劣化から見たSF_6混合ガス成分の検討" 電気学会研究会資料. ED-98-11. 7-12 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akihiko TAKAHASHI, Kiyoto NISHIJIMA: "Kinetic Model of Gas Heating of Laser-Produced Plasmas by CO_2 Laser in Atmospheric Air" Japan Journal of Applied Physics. Vol.37,No.1. 313-319 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kiyoto Nishijima, Takashi Tomoto and Yasutaka Taguchi: "Progressive Changes of Decomposition Products and Discharge Characteristics under DC-corona Discharge in SF6" Technical Note of Research Confrence IEE of Japan. ED-96-12. 105-114 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kiyoto Nishijima, Takashi Tomoto and Yasutaka Taguchi: "Progressive Changes of Decomposition Products and Electrode Surface under DDC-corona Discharge in SF6" Trans. IEE of Japan. 117-A,1. 88-89 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kiyoto Nishijima and Yasutaka Taguchi: "Toxic Decomposition Products in Electrical Gas-insu-lated Systems with SF6 and Thelf Measuring Technique" Technical Note of Research Confrence IEE of Japan. ED-97-17. 19-24 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yasuji Ozawa, Jian-bo yang and Kiyoto nishijima: "A Laser-Induced Curtain-like-Streamer Corona under Positive DC Glow Corona Discharges in a Wire-Plane Air Gap" Trans. IEE of Japan. 117-A,11. 1141-1142 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Makoto Watanebe and Kiyoto Nishijima: "The Discussion on Gas Component from Spart Discharge Decomposition in SF6 and its Mixtures" Technical Note of Research Confrence IEE of Japan. ED-98-11. 7-12 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akihiko Takahashi and Kiyoto Nishijima: "Kinetic Model of Gas Heating of Laser-Produced Plasmas by CO2 Laser in Atomospheric Air" Japan Journal of Applied Physic. Vol. 47, No. 1. 313-319 (1998)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-16  

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