Analysis of Electrical Safety Level Test for Barehand Work at 765kV Vertical Double Circuit Six Bundle Conductors on the Suspension String Tower Type

765kV 수직2회선 6도체 현수형 철탑에서 직접활선작업의 안전성 평가분석

  • 김대식 (한국전기공사협회 기술정책연구원) ;
  • 한상옥 (충남대학교 공대 전기공학과)
  • Published : 2008.09.01

Abstract

It has been issued that the necessity of Live line work for 765kV vertical double circuit six bundle conductors transmission line when the characteristics of transmission line, the composition of T/L and near the T/L circumstances etc. Others are considered. The Barehand method of UHV T/L is extremely dangerous work and especially it is directly related with lineman life so it is very dangerous. It should be performed several technology developments for live-line work on the UHV T/L, that should be considered such as the electrical influence on workers near the T/L, development of live-line facilities, guarantee of safety, the technical rules of live-line work, the safe method of live-line work and etc. In order to maintain the 765kV transmission lines safely by barehand work, first of all, we should know the analysis of electrical safety level test in live-line work at 765kV vertical double circuit six bundle conductors on the suspension string tower type.

Keywords

References

  1. 산업자원부, "765kV 송전선로 활선작업시 전기적 섬락특성 연구", pp. 161-166, 2006
  2. 산업자원부 "초고압 송전선로 활선공법 및 관련장비 개발", 2차년도 중간보고서, pp. 38-41, 2005
  3. D.S. Kim, H.j. Kim, H.K. Lee, S.O. Han, "A Study on Flashover Characteristics of the 765kV Transmission Line During Live Line Works", APAP2007, P628, April 24-27, 2007
  4. 한국전력공사, "765kV 송전선로 공기절연거리 실증연 구(최종보고서)", TR.93TJ01.96.15, pp. 71-99, 1996
  5. O.V.Bodgdanov, V.P.Dikoj, S.V.Krylov, "Dielectric strength of external insulation and air gaps under live working on EHV and UHV transmission lines", CIGRE, 1994 Session, Vol 2, No. 303, 28 August - 3 September, 1994
  6. K.J.Sadurski, C.W.Van Der Merwe, "Live line maintenance of EHV and UHV transmission lines factors influencing the dielectric strength at the work site", CIGRE, 1994 Session, Vol 2, No. 304, 28 August - 3 September, 1994
  7. CIGRE, TF 330702, "Strength of external insulation during live line maintenance and repair work with special reference to transient overvoltages". ELEctra No. 129, 1990