Estimación de los parámetros del modelo del suelo de dos capas para los sistemas de puesta a tierra utilizando optimización no lineal.

Juan Ramirez

doi:10.70998/itistct.v4i1.140

Estimation of two-layer soil model parameters for grounding systems using nonlinear optimization.

Authors

Juan Ramirez National Polytechnic School https://orcid.org/0000-0002-9855-9835

DOI:

https://doi.org/10.70998/itistct.v4i1.140

Keywords:

apparent resistivity, soil resistivity, grounding systems, optimization

Abstract

In this article, the estimation of the parameters of the two-layer model for soil resistivity is carried out. This model is widely used in the design of grounding systems. For the estimation, we start from the soil resistivity data measured in the field with the Wenner method. Subsequently, these data are compared with the Tagg resistivity equation that serves as a model, then an error function is established between the model and the data measured in the field. This error function has three variables: upper layer resistivity, lower layer resistivity, and upper layer depth. The error function is minimized with non-linear optimization algorithms and the three most suitable variables for the soil model are obtained.

References

Committee, S. (2012). IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System - Redline. IEEE Std 81-2012 (Revision of IEEE Std 81-1983) - Redline, 2012(December), 1–192. https://doi.org/10.1109/IEEESTD.2012.6392181

IEEE Power and Energy Society. (2013). IEEE Guide for Safety in AC Substation Grounding. IEEE Std 80-2013 (Revision of IEEE Std 80-2000/ Incorporates IEEE Std 80-2013/Cor 1-2015), February, 1–226. https://doi.org/10.1109/IEEESTD.2015.7109078

Least-Squares (Model Fitting) Algorithms - MATLAB & Simulink - MathWorks América Latina. (n.d.). Retrieved May 14, 2022, from https://la.mathworks.com/help/optim/ug/least-squares-model-fitting-algorithms.html#broz0i4

MathWorks. (n.d.). MATLAB lsqnonlin. Retrieved May 14, 2022, from https://la.mathworks.com/help/optim/ug/lsqnonlin.html

Tagg, G. (1964). Earth resistances. Pitman Pub. Corp.

Wenner, F. (1916). A Method of Measuring Resistivity (Vol. 12). https://scholar.google.es/scholar?hl=es&as_sdt=0%2C5&q=WENNER%2C+F.+A+Method+of+Measuring+Resistivity%2C+&btnG=

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Published

2022-07-01

How to Cite

Ramirez, J. (2022). Estimation of two-layer soil model parameters for grounding systems using nonlinear optimization. Investigación Tecnológica IST Central Técnico, 4(1). https://doi.org/10.70998/itistct.v4i1.140

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Vol. 4 No. 1 (2022): Investigación Tecnológica IST Central Técnico

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