Detail publikace

Evaluating the Ground Impedance -- A New Methodology Based on EM Reciprocity

Originální název

Evaluating the Ground Impedance -- A New Methodology Based on EM Reciprocity

Anglický název

Evaluating the Ground Impedance -- A New Methodology Based on EM Reciprocity

Jazyk

en

Originální abstrakt

The electromagnetic reciprocity theorem of the time-convolution type is applied to introduce a general methodology for constructing approximate expressions for the ground impedance parameter. The methodology is first illustrated on expressing the ground impedance concerning a thin conductive strip above a homogeneous, lossy half-space, which yields the classic ground-impedance approximate expressions due to Carson and Vance. Second, the proposed methodology is applied to the corresponding strip-ground configuration in which the effect of the ground is modeled via the surface impedance approximation. This leads to a new ground-impedance approximate expression given in terms of the exponential integral. The validity of the latter approximation is assessed numerically and its relation to the well-known approximations is briefly discussed. Finally, the corresponding two-layer ground problem configuration is analyzed. The result is a correction of the ground impedance accounting for the contrast in soil stratification.

Anglický abstrakt

The electromagnetic reciprocity theorem of the time-convolution type is applied to introduce a general methodology for constructing approximate expressions for the ground impedance parameter. The methodology is first illustrated on expressing the ground impedance concerning a thin conductive strip above a homogeneous, lossy half-space, which yields the classic ground-impedance approximate expressions due to Carson and Vance. Second, the proposed methodology is applied to the corresponding strip-ground configuration in which the effect of the ground is modeled via the surface impedance approximation. This leads to a new ground-impedance approximate expression given in terms of the exponential integral. The validity of the latter approximation is assessed numerically and its relation to the well-known approximations is briefly discussed. Finally, the corresponding two-layer ground problem configuration is analyzed. The result is a correction of the ground impedance accounting for the contrast in soil stratification.

Dokumenty

BibTex


@article{BUT149733,
  author="Martin {Štumpf}",
  title="Evaluating the Ground Impedance -- A New Methodology Based on EM Reciprocity",
  annote="The electromagnetic reciprocity theorem of the time-convolution type is applied to introduce a general methodology for constructing approximate expressions for the ground impedance parameter. The methodology is first illustrated on expressing the ground impedance concerning a thin conductive strip above a homogeneous, lossy half-space, which yields the classic ground-impedance approximate expressions due to Carson and Vance. Second, the proposed methodology is applied to the corresponding strip-ground configuration in which the effect of the ground is modeled via the surface impedance approximation. This leads to a new ground-impedance approximate expression given in terms of the exponential integral. The validity of the latter approximation is assessed numerically and its relation to the well-known approximations is briefly discussed. Finally, the corresponding two-layer ground problem configuration is analyzed. The result is a correction of the ground impedance accounting for the contrast in soil stratification.",
  address="IEEE EMC Society",
  chapter="149733",
  doi="10.1109/TEMC.2018.2833285",
  howpublished="online",
  institution="IEEE EMC Society",
  number="3",
  volume="61",
  year="2018",
  month="may",
  pages="1--7",
  publisher="IEEE EMC Society",
  type="journal article in Web of Science"
}