Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지

Breakdown and Surface Flashover Characteristics of FRP in $LN_2$

액체질소 중 FRP의 절연파괴 및 연면방전 특성 연구

  • 정종만 (경상대 대학원 전기공학과) ;
  • 백승명 (경상대 대학원 전기공학과) ;
  • 김상현 (경상대 공대 전기전자공학과)
  • Published : 2002.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we discussed the characteristics of breakdown and surface flashover of FRP in L$N_2$ for applying it to spacer of a superconducting power equipment. Fiberglass reinforced plastic(FRP) has high breakdown puncture strength and has high mechanical strength. So the research of its dielectric properties have been conducted in liquid nitrogen($LN_2$). We measured breakdown voltage of FRP and distinguished four types of surface flashover along solid insulator with arrangement of electrodes and measured the surface flashover voltages of each types of electrode arrangement. The type of a electrode set at the back of the insulator showed the worst dielectric property. The property of surface flashover depending on pressure was tested.

Keywords

References

  1. IEEE Trans on Electrical Insulation v.24 no.5 Surface Flashover of Insulators Craig Miller
  2. IEEE Trans. on Dielectrics and Electrical Insulation v.2 no.3 Weibull Statictical Analysis of Area and Volume Effects on the Breakdown Strength in Liquid Nitrogen H. Okubo;K. Uchida
  3. 極低溫冷媒の等電界における 耐電壓特性 西村誠介(et al)
  4. IEEE Trans on Applied Superconductivity v.11 no.1 The Relationship among AC Surface Spark-over Voltage, Specific Capacitance of Solid Insulator and Bubbles in LN₂ and LHe Tanzo Nitta;Masakuni Chiba;Hisashi Uematsu
  5. IEEE Trans on Applied Superconductivity v.10 no.1 Characteristic of AC Surface Spark Voltage in LN₂and LHe Tanzo Nitta;Masakuni Chiba;Hisashi Uematsu
  6. IEEE Trans on Dielectrics and Electricl Insulation v.6 no.1 A Study of Thermal Bubble Behavior in the Simulated Electrode System of HT Superconducting Coils B.Y.Seok;N. Tamuro;M. Hara