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http://dx.doi.org/10.5207/JIEIE.2004.18.4.181

The Ground Impedance Modeling using pattern Search Method for Neutral Hormonic Analysis  

백승현 (홍익대학교 전기공학과 대학원)
김경철 (홍익대학교 전자전기컴퓨터공학)
최종기 (한국전력공사 전력연구원 전력계통연구)
이일무 (홍익대학교 전기공학과 대학)
백남웅 (동양산전(주))
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.18, no.4, 2004 , pp. 181-187 More about this Journal
Abstract
With the proliferation of nonlinear loads, high neutral harmonic currents in three-phase four-wire distribution system have been observed. It has been known that the ground impedance has an effect on the neutral currents of a system which operates with harmonics present. On-site measurements of harmonic currents and voltages according to the fall-of-potential method under case study system were made and the ground impedance modeling using the pattern search method for the harmonic analysis was developed The ground impedance model obtained by the proposed method was compared with the frequency characteristics by field tests and has shown appropriate results, and would be applicable to evaluate the harmonic and transient response characteristics of the ground system.
Keywords
Neutral harmonic currents; Ground impedance; Equivalent circuit; Fall-of-potential method; Pattern search method;
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