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Neutral Current Calculation of Pole-Top Overhead Distribution Line  

Seo, Hun-Chul (성균관대 대학원 전자전기공학과)
Kwon, O-Sang (성균관대 대학원 전자전기공학과)
Kim, Chul-Hwan (성균관대 정보통신공학부)
Jung, Chang-Soo (한국전력공사 전자통신처)
Yoo, Yeon-Pyo (한국전력공사 전자통신처)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers A / v.55, no.7, 2006 , pp. 290-296 More about this Journal
Abstract
If the three phases are not balanced, the current in neutral wire is not zero. Then, the induced voltage can be generated in communication line. The KEPCO's rule about unbalanced current for one step type in distribution pole is a twenty percent of phase current. But the unbalanced current for two step type in distribution pole can't decide the rule because there are many different views. This paper presents the calculation and analysis technique of neutral current in distribution poles using equivalent circuit analysis and EMTP simulation.
Keywords
Neutral Current; One Step Type Pole; Two Step Type Pole; Equivalent Circuit; EMTP;
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  • Reference
1 David E. Johnson, John L. Hilburn, Johnny R. Johnson, Peter D. Scott, 'ELECTRIC CIRCUIT ANALYSIS', PRENTICE HALL
2 'Alternative Transients Program ATP Rule Book', EEUG, Canadian/American EMTP User Group