Avaliação teórico-experimental de campos magnéticos nas proximidades das linhas de transmissão subterrâneas

Abstract

The aim of this work is to present a study of geometric arrangements of underground transmission lines to reduce the magnetic flux density around them, while in the design stage. By optimizing the geometry, the magnetic flux density can be effectively reduced without increasing the costs of the layout of the facility, either in material, labor, equipment and auxiliary systems. The calculation method is confronted with real field measurements. Different arrangements are simulated evaluating the influence of geometric variables such as depth, spacing between phases, distance between lines, distance from ground to the measuring point, single and double circuits considering all cables wrapped in the same way.