XLPE의 가교도 분포에 따른 전기트리 진전 특성 분석

Analysis on Electrical Tree Growth Characteristics in XLPE According to Crosslinked Degree

  • 김상기 (전남대학교 전기공학과) ;
  • 김덕근 (전남대학교 전기공학과) ;
  • 이정빈 (전남대학교 전기공학과) ;
  • 이진 (목포대학교 전기공학과) ;
  • 김태성 (전남대학교 전기공학과)
  • 발행 : 1998.11.28

초록

Crosslinked Degree is an important factor to determine dielectric property of crosslinked polyethylene(XLPE) used for the insulation material in power cables. Recently, though it is necessary to investigate electrical properties according to crosslinked degree as a part of the whole characterization of cable. it is not examined closely. In this study, crosslinked degree of samples were measured according to temperature and holding time of crosslinking, electrical tree characteristics of these samples were analyzed by crosslinked degree and applied temperature that was changed from normal temperature to operating temperature of power cables. As a result. when the crosslinked degree was low, dielectric properties were decreased and influence of temperature was increased. but the crosslinked degrees were high. initiation voltages of treeing were increased and dielectric properties were improved. It is proved that the optimum. crosslinked degree was one of most important factor for aging time and residual lifetime of power cable.

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