Electrical & Electronic Materials (E2M - 전기 전자와 첨단 소재)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
권호 표지

Surface flashover discharge and partial discharge of polymer film in liquid helium

액체 He중 고분자 film의 연면 및 부분방전 연구

  • 김상현 (경상대 공대 전기공학과) ;
  • 김현희 (경상대 공대 전기공학과) ;
  • 정순용 (경상대 공대 전기공학과) ;
  • 최효상 (전력연구원 에너지 환경 고등연구소)
  • Published : 1996.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Electrical properties such as surface flashover discharge and discharge degradations of insulating materials for superconducting cable have been investigated. It is found that the surface voltage is proportional to $l^{0.7}$ (l: discharge length) in liquid helium (LHe). V-t characteristic in LHe was a n=5.5 that was less than liquid nitrogen (L $N_{2}$). After applied AC voltage, the surface condition of polymer films was observed non-eroded areas and eroded areas. The eroded area is depending on the applied voltage. In case of LHe, the crack was observed.d.

Keywords