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A Study on Separation Distance Calculation Model for Limitation of Earth Potential Rise Nearby Tower Footings  

Choi, Jong-Kee (한전 전력연구원 전력계통연구소)
Cho, Hwan-Gu (한전 송변전건설처 건설기술팀)
Kim, Tai-Young (한전 송변전건설처 건설기술팀)
Lee, Dong-Il (한전 전력연구원 전력계통연구소)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.2, 2008 , pp. 179-183 More about this Journal
Abstract
In case of a line-to-ground fault at transmission lines, a portion of fault current will flow into the earth through the footings of the faulted tower causing electrical potential rise nearby the faulted tower footings. In this situation, any buried pipelines or structures nearby the faulted tower can be exposed to the electrical stress by earth potential rise. Although many research works has been conducted on this phenomena, there has been no clear answer of the required separation distance between tower footings and neary buried pipeline because of its dependancy on the soil electrical charactersics of the concerned area and the faulted system. In this paper, an analytical formula to calculate the requried sepeartion distance from the faulted tower has been derived.
Keywords
Footing resistance; Fall-Of-Potential test; Fault current division factor;
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  • Reference
1 J.Pohl, Influence of high-voltage overhead lines on covered pipelines, CIGRE-326, 1966
2 SES, SPLITS Users' manual, 1995
3 산업자원부, 전력선 접지점과 매설배관의 이격거리 표준화(중간보고서), 2006
4 A.P.Sakis Meliopoulos, "Power System Grounding and Transient", pp.278-291, Marcel Dekker Inc, 1988
5 L.M.Popovic, "Practical method for evaluating ground fault current distribution in station supplied by an unhomogeneous line", IEEE Trans. on PD, Vol.12, pp.722-727, Apr, 1997
6 CIGRE Study Committee 36, "Results of an International Survey of the Rules Limiting Interference Coupled into Metallic Pipelines by High Voltage Power Systems", 1987
7 B.C.Hydro, Study of problems associated with pipelines occupying joint-use corridors with AC transmission lines, Vol.1, CEA No.75-02, 1979
8 S.Sebo, "Zero sequence current distribution along transmission lines", IEEE Trans. on PAS, vol. PAS-88, No.6, pp.910-919, Jun, 1969   DOI
9 B.Favez, J.C.Gougeuil, Contribution to studies on problem resulting from the proximity of overhead lines with underground metal pipelines, CIGRE-336, 1966
10 F.P.Dawalibi, "Ground Fault Current Distribution Between Soil and Neutral Conductors", IEEE Trans.,PAS-99, No.2, Mar/Apr, 1980