Conference Paper

Analyzing the earth conductivity and permittivity frequency dependence influence to electromagnetic transient phenomena

COPPE, Fed. Univ. of Rio de Janeiro
DOI: 10.1109/ICPST.2000.897132 Conference: Power System Technology, 2000. Proceedings. PowerCon 2000. International Conference on, Volume: 2
Source: IEEE Xplore


In this article the quasi-modes model is used to observe the
influence, in electromagnetic transient phenomena, of considering a more
accurate representation of soil, taking into account the earth
conductivity and permittivity frequency dependence. For an actual 440 kV
three-phase transmission line the soil behavior is represented through a
unique real value of conductance and through a more accurate model,
considering its electromagnetic behavior

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Available from: Maria Cristina Dias Tavares, Apr 01, 2014
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    • "A summary of statistical distribution of parameters that define frequency dependence is presented in Fig. 15. If specific measurements of soil parameters, in function of frequency, have been done, procedures described in [1] [2] [3] [4] [5] [6] [7] [8] allow to define grounding system behavior, to evaluate people and equipment safety, and to optimize means to obtain adequate behavior for lightning. One eventual difficulty, specially for small grounding systems , is to evaluate soil parameters related to frequency dependence, that are not obtained by common procedures, and can be measured as described in [3] [4]. "
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