Abstract
Models of residential exposure to magnetic fields generated by high-voltage overhead power lines need to address certain real-life simplifications. For instance, the lack of consideration of the circuits load and even the terrain relief and the line sag. These model designs in epidemiological studies could entails high levels of exposure misclassification render the findings from them uninterpretable. Moreover, there is currently a lack of consensus in the scientific community regarding the health risk of this residential exposure. In this study, we have generated a 3D model of an urban area and a surface of minimum distances between the ground and the overhead power line to analyse the magnetic field error value when these models are employed. This methodology could be used to determining the correction factors for distance values and to generate maps of residential magnetic field exposure. The results indicated that the topography consideration is essential to make precise estimates of magnetic field values.
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