Title :
Magnetic Field Mitigation Shielding of Underground Power Cables
Author :
Machado, Vitor Maló
Author_Institution :
Inst. de Telecomun., Tech. Univ. of Lisbon, Lisbon, Portugal
Abstract :
This paper is a contribution to the analysis of magnetic field mitigation shielding of underground power cables. A hybrid finite-element method (FEM)/semi-analytical expansion is adopted for the numerical treatment of the open boundary magnetic field problem. Different constitutive materials for the magnetic shielding are studied, and comparison is established between conductive (aluminum) and ferromagnetic (steel) cases. A horizontal flat configuration for the underground cable is considered. It is concluded that the aluminum shielding is more efficient as far as magnetic field mitigation is concerned.
Keywords :
finite element analysis; magnetic fields; magnetic shielding; power cables; underground transmission systems; aluminum shielding; conductive materials; constitutive materials; ferromagnetic materials; hybrid finite element method; magnetic field mitigation shielding; numerical treatment; open boundary magnetic field problem; semi analytical expansion; underground power cables; Cable shielding; Finite element methods; Magnetic noise; Magnetic shielding; Soil; Underground power cables; Eddy currents; finite-element methods; magnetic fields; magnetic shielding; underground power transmission lines;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2174775
