Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Partial Discharge Characteristics of the XLPE/EPDM Interface in Power Cable Joint

전력케이블 접속재 XLPE/EPDM 계면의 부분방전 특성

  • 조경순 (광운대학교 전자정보공과대학 전기공학과 중전기기 미래기술개발 연구센터) ;
  • 홍진웅 (광운대학교 전자정보공과대학 전기공학과 중전기기 미래기술개발 연구센터)
  • Published : 2007.09.01
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Abstract

This paper describes the influence on partial discharge characteristics of defects at the model XLPE/EPDM interfaces of power cable joints. The defects of void and copper which could inadvertently be present at the joint interface. We measured ${\Phi}-n,\;{\Phi}-q$ patterns by a computer-aided partial discharge measuring system. Several parameters i, e, maximum discharge $q_{max}$ [pC], average discharge q [pC/cycle], and average angle of discharge ${\Theta}g$ [deg] were found to depend upon the defect type varying applied voltage. As the result of time evaluation, partial discharges are small different at copper defects, but is decreasing obviously about 20 minutes at void defect. It considered that difference of magnitude of total positive discharge of Q+ [pC] and total negative discharge of Q- [pC] is SPMD(swarming pulsive micro discharges).

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References

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