Recuperação de energia magnética de linhas de transmissão visando iluminação de esferas de sinalização.

Abstract

The transmission lines are fundamental elements in the interconnection of the basic networks in the electrical systems. For safety and regulatory purposes, such lines should have signaling beads in some of their sections to assist aircraft pilots in visualizing the presence of such obstacles. The current signaling spheres used do not take advantage of the potential for capturing the magnetic energy whose installations on transmission lines can provide. Thus, this dissertation aims to design and test a magnetic sensor with turns in toroidal format to recover the magnetic energy in around the phase conductors of the transmission line. Initially, a survey was carried out of scientific papers that apply the Maxwell equations, and studies concerning the proposed theme and technical norms that are in force. Technical standards NBR - 5422 and 7276 do not prohibit the installation of signaling beacons on phase conductors, they only determine that at least the highest - level driver must be signaled. With the aid of an algorithm written in the environment of the MATLAB program, different simulations of energy recovery coils were executed. In order to verify the efficiency of the algorithm, experiments were carried out in the Laboratory of Metrology - LabMet / UFCG. The responses in the linearity region of its magnetization curve for the recovery of magnetic energy using a nanocrystalline alloy core were analyzed. Simulations were performed with coils of rectangular and circular sections. The results were later compared with the simulations.