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http://dx.doi.org/10.5207/JIEIE.2005.19.6.046

Ground Impedance Characteristics Analysis of a Copper Rod-type Grounding Electrode used for Electric Distribution Systems  

Kim, Kyung-Chul (홍익대학교 전기공학과)
Lee, Joo-Hong (홍익대학교 전력계통 연구실)
Jin, Seong-Eun (홍익대학교 대학원 전기공학과)
Oh, Jung-Suk (조달청 IT)
Park, Sang-Young (홍익대학교 전력계통 연구실)
Choi, Jong-Ki (한국전력공사 전력연구원 전력계통 연구실)
Kim, You-June (홍익대학교 전력계통 연구실)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.6, 2005 , pp. 46-51 More about this Journal
Abstract
Grounding insures a reference potential point for electric devices and also provides a low resistance path for fault currents in the earth. The ground impedance as a function of frequency is necessary for determining its performance since fault currents could contain a wide range of frequencies. A cower rod electrode is the most commonly used grounding electrode in electric distribution systems. In this paper, the ground impedance of cower rods has been measured in frequency ranging from 60[Hz] up to 100[kHz] and an equivalent circuit model, transfer function model of the ground impedance are identified from the measured values.
Keywords
Ground impedance; Copper rod; Frequency characteristic; Equivalent circuit model; Transfer function model;
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