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Effects of Reclosing for Insulation Coordination in 345kV Combined Transmission Lines

345kV 혼합송전선로에서 재폐로가 절연설계에 미치는 영향

  • Received : 2010.02.16
  • Accepted : 2010.04.12
  • Published : 2010.05.01

Abstract

This paper describes switching surge analysis for reclosing decision in 345kV combined transmission line with XLPE power cable. Reclosing operation should be decided based on the detailed technical analysis in combined transmission line because this line includes power cable section which is week on insulation. Insulation of power cable can be breakdown at the week point in case of reclosing moment. Therefore the detailed analysis has to be carried out by considering several conditions such as length ratio of power cable section, arrestor, inserting resistance, charging rate, grounding resistance, etc.. On the other hand sheath voltage on IJ(Insulated Joint) is analyzed to check dangerous condition on cable cover. Analysis is performed by EMTP/ATP. Analysis results show that reclosing can be operated as the single line-to-ground fault occurs on overhead line in 345kV combined transmission line, if the inserting resistance is considered before the operation of main circuit breaker.

Keywords

References

  1. KEPCO, "지중송전케이블 시스템", 2002. 12
  2. KEPRI, "지중케이블 설비체계 분석 및 케이블 보호대책 수립에 관한 연구(최종보고서)" 2004. 12
  3. 보호계전기 정정 세부사항(부록 1)
  4. 일본 동경전력, "계통조작 규칙(2007. 10. 31 개정)"
  5. 일본 중부전력, "이상시 계통운영 지침(2005. 4. 1.개정)"
  6. A.I.Ibrahim, H.W.Dommel, "Knowledge Base for Switching Surge Transients" IPST05-050, 2005. 6
  7. 한국전력공사 기술연구원, "지중송전 케이블의 써어지 보호 대책에 관한 연구(최종보고서)", 1993.6
  8. Laszlo Prikler, "Lightning Performance and Switching Overvoltage Studies of an Uprated Transmission Line" IPST 2003
  9. C.K.Jung, K.S.Lim, J.B.Lee, J.W.Kang, "Switching Transient Studies of 345kV Combined Transmission Systems", IEEE T&D ASIA Conference, 2009. 10
  10. 정채균, 임광식, 강지원, 이종범, "투입저항 및 피뢰기 설치에 따른 345kV 혼합송전선로 개폐과전압 저감효과 분석", 대한전기학회 전력기술부문회 춘계학술대회 논문집, 2009. 5
  11. ATP Rule Book, Canadian/American EMTP user group, Portand, Oregon/USA. (revised and distributed by the EEUG Association, 1998
  12. KEPCO, "변전 설계기준-2511, 교류차단기 선정 기준"
  13. KEPCO, "송전 설계기준-1031, 직접접지방식 송변전 설비 절연협조 기준"
  14. 심응보, "345kV 산청-의령간 송전선로 개폐과전압 검토"
  15. KERPI, "송전 설계기준 재개정 및 보완 연구(최종보고서)", 2001. 8
  16. KERPRI, "345kV 및 154kV급 Gapless 피뢰기 정격규격 및 기준정립(최종보고서)", 2000. 2
  17. J.B.Kim, W.B.Shim, J.W.Shim, "Swithcing Overvoltage Analysis and Air Clearance Design on the KEPCO 765kV Double Circuit Transmission System" IEEE Trans. on PWD, Vol. 15, No. 1, 2001. 1
  18. KEPRI, "직접접지계통 송전선로 고저항 지락보호 대책 연구 (최종보고서)", 1997. 7