Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Frequency-dependent electrical parameters of soils as a function of the moisture content

수분함유량에 따른 토양의 전기적 파라미터의 주파수의존성

  • 이복희 (인하대학교 IT공대 전기공학과) ;
  • 김기복 (인하대 대학원 전기공학과)
  • Received : 2014.03.08
  • Accepted : 2014.04.16
  • Published : 2014.06.30
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Abstract

The electrical parameters of soils are highly dependent on the various factors such as types of soil, chemical compositions, moisture content, temperature, frequency, and so on. The analysis of soil parameters is of fundamental importance in design of grounding systems. In this paper, we present the experimental results of frequency-dependent impedance, resistivity, permittivity of soils as functions of types of soil and moisture content. The impedance and resistivity of soils are decreased as the moisture content and the frequency increase. In particular, the variation of the soil resistivity with the frequency is pronounced in the conditions of high resistivity and low moisture content. On the contrary, the permittivity of soils are sharply decreased with increasing the frequency below 10kHz and the frequency-dependent permittivity of soils are highly changed in the conditions of high moisture and low resistivity.

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References

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