RT Journal Article
T1 3D GIS for surface modelling of magnetic fields generated by overhead power lines and their validation in a complex urban area
A1 Miravet-Garret, Laia
A1 De-Cózar-Macías, Óscar
A1 Blázquez-Parra, Elidia Beatriz
A1 Marín-Granados, Manuel Damián
A1 García-González, Juan Bernabé
K1 Campos electromagnéticos
AB Residential exposure to magnetic fields generated by overhead high-voltage power lines, continues to be a mat-ter of social concern and, for the scientific community, a challenge to model this exposure accurately enough toreliably detect even small effects in large populations complexes. In any expression of the magnetic field inten-sity, the source-receiver distance is a determining variable, especially in an environment closer to the electricalinstallation and critical with the existence of significant unevenness in the terrain. However, MF exposure studiesadopt, due to their complexity, simplifications of reality where even sometimes the terrain relief and the bucklingof the line are not considered. The application of 3D techniques with Geographic Information Systems (GIS) al-lows us to address this problem. This article presents a model for generating magnetic field intensity surfacesfrom high-precision terrain elevation data. The series expansion of the Biot-Savart law to an infinite rectilinearconductor with variable height according to the catenary described by the cables using ArcGIS software is appliedto calculate the magnetic field. For the validation, 69 control points (1035 field measurements) were used in afree urban area and another 28 points (420 field measurements) in a built-up urban area with complex relief.Good estimates were obtained, although with differences in both areas. With MAPE 9.65% and 19.51%, R2 =0.922 and 0.949, RMSE = 0.154 and 0.094 μT, respectively. Furthermore, 86% of the points were correctly classi-fied according to usual exposure percentiles. However, the use of a 5 m resolution digital terrain model to obtainhigh-precision elevation data was an indispensable condition for the good performance of our model. The resultas a continuous surface of magnetic field values at the real elevation of the ground can contribute significantly tothe development of new environmental and public health studies.
PB Elsevier
YR 2021
FD 2021-11-20
LK https://hdl.handle.net/10630/23959
UL https://hdl.handle.net/10630/23959
LA eng
NO Miravet Garret, Laia ; De-Cozar-Macias, Oscar ; Blazquez-Parra, Elidia Beatriz ; Marín-Granados, Manuel Damián ; García-Gónzalez, Juan Bernabé. 3D GIS for surface modelling of magnetic fields generated by overhead power lines and their validation in a complex urban area.  Science of The Total Environment Volume 796, 20 November 2021, 148818. https://doi.org/10.1016/j.scitotenv.2021.148818
NO The authors wish to thank the company e-Distribución Redes Digitales SLU for providing all the technical data of the electrical line studied. Thanks to their support, it has been possible to develop this research. Likewise, they also want to express gratitude to the University of Malaga and CBUA (Consorcio de Bibliotecas Universitarias de Andalucía), for providing all the necessary equipment and publishing support for this work (funding for open access charge: Universidad de Málaga / CBUA).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026