The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Transferred OverVoltages on LV sides in Multigrounded Neutral during Line to Ground Fault on Distribution Systems

배전계통의 고저압 혼촉고장시 중성선 전위상승에 따른 저압기기 스트레스 전압

  • 최선규 (한국전력공사 전력연구원) ;
  • 최종기 (한국전력공사 전력연구원) ;
  • 김경훈 (한국전력공사 인재개발원) ;
  • 최명호 (한국전력공사 서울지역본부 성동지사) ;
  • 이병성 (한국전력공사 전력연구원)
  • Received : 2011.09.09
  • Accepted : 2011.12.12
  • Published : 2012.06.01
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Abstract

In this paper we propose multi-grounded neutral design method which was considered of transferred transient overvoltage when line to neutral fault occurs. Specially, In order to confirm the actual transient overvoltage magnitude which occurs on neutral line, we considered some screening(shielding) effects. The screening coefficient was deducted from field test results and calculation in a distribution line which is identical with an actual power line. The purpose of this paper is to attempt to suggest the guidance for grounding skystem design considering limitation of overvoltage for LV side in IEC 61936. The result is based on EMTP simulation and real field faults situation in distribution lines.

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References

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