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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2014
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| Online Access: | https://www.redalyc.org/articulo.oa?id=40431741011 |
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Table of Contents:
- Ground-Wave Propagation Effects on Transmission Lines through Error Images Felipe Alejandro Uribe-Campos Ingeniería ground error images return effects earth impedances low frequency effects Electromagnetic transient calculation of overhead transmission lines is strongly influenced by the natural resistivity of the ground. This varies from 1-10K (Ω·m) depending on several media factors and on the physical com - position of the ground. The accuracy on the calculation of a system transient response depends in part in the ground return model, which should consi - der the line geometry, the electrical resistivity and the frequency dependen - ce of the power source. Up to date, there are only a few reports on the specialized literature about analyzing the effects produced by the presence of an imperfectly conducting ground of transmission lines in a transient sta - te. A broad range analysis of three of the most often used ground-return models for calculating electromagnetic transients of overhead transmission lines is performed in this paper. The behavior of modal propagation in ground is analyzed here into effects of first and second order. Finally, a numerical tool based on relative error images is proposed in this paper as an aid for the analyst engineer to estimate the incurred error by using approxi - mate ground-return models when calculating transients of overhead trans - mission lines. 2014 artículo científico 1405-7743 https://www.redalyc.org/articulo.oa?id=40431741011 en http://www.redalyc.org/revista.oa?id=404 Ingeniería. Investigación y Tecnología application/pdf Universidad Nacional Autónoma de México Ingeniería. Investigación y Tecnología (México) Num.3 Vol.XV