Journal of the Korean Society for Railway (한국철도학회논문집)

The Korean Society for Railway (한국철도학회)
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Insulation Performance Estimation of Main Relays by Partial Discharges

부분방전에 의한 주계전기의 절연성능 평가

  • 길경석 (한국해양대학교 전기전자공학부) ;
  • 김일권 (한국해양대학교 대학원) ;
  • 박대원 (한국해양대학교 대학원) ;
  • 송재용 (국립과학수사연구소) ;
  • 이강원 (한국철도기술연구원 바이모달수송시스템연구단) ;
  • 조은제 (부산교통공사 호포차량사업소 검사2담당)
  • Published : 2007.08.31
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Abstract

A new dielectric test on main relays of electric traction vehicles, the partial discharge(PD) test, is proposed. The PD test will not affect the insulation performance of specimen during the test and provide much more detailed information on insulation, the types of defects, and so on. Insulation performance of relays is estimated by discharge inception voltage(DIV), discharge extinction voltage (DEV), and apparent charge as a function of test voltage and time. Three main relays of different manufacturing date were estimated by applying AC voltage with three patterns in ranges of $0{\sim}1,200[V]$. From the results, we could estimate insulation state and which types of defects exist in them.

Keywords

References

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