Environmentally friendly high-performance gas insulation system using CF3Igas

2009 Fiscal Year Final Research Report

• Project/Area Number: 19206029
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: 電力工学・電気機器工学
• Research Institution: The University of Tokyo
• Principal Investigator: HIDAKA Kunihiko The University of Tokyo, 大学院・工学系研究科, 教授 (90181099)
• Co-Investigator(Kenkyū-buntansha): KUMADA Akiko 東京大学, 大学院・工学系研究科, 准教授 (20313009) ; MATSUOKA Shigeyasu 東京大学, 大学院・工学系研究科, 助教 (10114646)
• Project Period (FY): 2007 – 2009
• Keywords: 電気機器工学 / 電子・電気材料 / 電力工学 / 環境対応 / 電気絶縁

Research Abstract

SF_6 gas has high global-warming-potential (GWP), and is one of the gases for the restriction. Therefore, the research and the development of alternative insulating gases to SF_6 are actively done in recent years. GIS, in which air or N_2 gas is used as insulating gas, is developed recently. However, most of GIS for more than 72kV class still use SF_6 gas. Therefore, the improvement of insulation performance of SF_6 substitutions is one of important issues.
In this research, CF_3I gas which is one of promising SF_6 substitutions is examined. The GWP of CF_3I gas is low, and its insulation performance is equal or superior to SF_6 gas. The substitutability of CF_3I is examined through measuring sparkover voltages in various non-uniform electric fields, flashover voltages on the surface of insulating material and by-products generated by the sparkover and the flashover.

Research Products

• [Journal Article] CF3Iガス及びCF3I/N2混合ガスの不平等電界下における放電特性 (2010)
  • Author(s): 武田敏信, 松岡成居, 熊田亜紀子, 日高邦彦
  • Journal Title: Vol. 130, No. 9(掲載予定)
  • Peer Reviewed
• [Journal Article] 急峻方形波印加時のCF3Iの放電特性 (2008)
  • Author(s): 武田敏信, 宇尾寛志, 松岡成居, 熊田亜紀子, 日高邦彦
  • Journal Title: 放電研究 Vol. 51, No. 4 Pages: 20-21
• [Presentation] Breakdown Characteristics of CF3I/CO2 Gas Mixture on Dielectric Surface (2010)
  • Author(s): Toshinobu Takeda, Shigeyasu Matsuoka, Akiko Kumada, Kunihiko Hidaka
  • Organizer: Proceedings of the 10th University of Tokyo-Seoul National University Joint Seminar on Electrical Engineering
  • Place of Presentation: Seoul
  • Year and Date: 2010-03-12
• [Presentation] Breakdown characteristics of CF3I on the dielectric surface (2009)
  • Author(s): Toshinobu Takeda, Shigeyasu Matsuoka, Akiko Kumada, Kunihiko Hidaka
  • Organizer: Proceedings of 2009 Korea-Japan Joint Symposium on Electrical Discharge and High Voltage Engineering, OB-3
  • Place of Presentation: Pusan
  • Year and Date: 2009-11-05
• [Presentation] Sparkover and Surface Flashover Characteristics of CF3I Gas under Application of Nanosecond Square Pulse Voltage (2009)
  • Author(s): Toshinobu Takeda, Shigeyasu Matsuoka, Akiko Kumada, Kunihiko Hidaka
  • Organizer: 16th International Symposium on High Voltage Engineering, C-55, CD Rom
  • Place of Presentation: Cape Town
  • Year and Date: 2009-08-24
• [Presentation] On the Better Understanding of Electrical Discharge Phenomena Through Advanced Measurement Technologies (2008)
  • Author(s): Kunihiko Hidaka
  • Organizer: Proceedings of the 17th International Conference on Gas Discharges and their Applications, invited lecture
  • Place of Presentation: Cardiff
  • Year and Date: 2008-09-11
• [Presentation] By-product of CF3I produced by spark discharge (2007)
  • Author(s): Toshinobu Takeda, Shigeyasu Matsuoka, Akiko Kumada, Kunihiko Hidaka
  • Organizer: Proceedings of 2007 Japan-Korea Joint Symposium on Electrical Discharge and High Voltage Engineering
  • Place of Presentation: Tokyo
  • Year and Date: 2007-11-17
• [Presentation] Breakdown Characteristics of CF3I Gas in Uniform and Non-Uniform Field Gap under Various Voltage Applications of Nanosecond Pulse to AC (2007)
  • Author(s): Toshinobu Takeda, Akiko Kumada, Kunihiko Hidaka, Shigeyasu Matsuoka
  • Organizer: Proceedings of 15th International Symposium on High Voltage Engineering, T9-647
  • Place of Presentation: Ljubljana, Slovenia
  • Year and Date: 2007-08-27
• [Book] 高電圧工学 (2009)
  • Author(s): 日高邦彦
  • Total Pages: 277
  • Publisher: 数理工学社
• [Remarks] 日高邦彦 : 電気学会業績賞、2008年5月23日 (CF3Iガス絶縁を含む絶縁材料工学に対する貢献に対して)
• [Remarks] Toshinobu Takeda : Best Paper Presentation Award, 2009 Korea-Japan Joint Symposium on Electrical Discharge and High Voltage Engineering, Nov. 9, 2009 (論文 "Breakdown characteristics of CF3I on the dielectric surface" に対して)