Title :
Three dimensional FEM calculations on shielding of power frequency magnetic fields from a substation
Author :
Hasselgren, L. ; MÖller, E. ; Hamnerius, Y.
Author_Institution :
Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
A 3-D finite element model is used to analyze the shielding effectiveness of an eddy-current shield applied to a 10/0.4-kV substation. The influence of the shield extension is shown. Furthermore, the insertion of a door in the shielded wall was found to create a locally elevated B-field. The results show that the magnetic field from substations can be shielded so that disturbances on VDT (video display terminal) screens in the vicinity can be avoided
Keywords :
eddy currents; finite element analysis; magnetic fields; magnetic shielding; substations; 0.4 kV; 10 kV; 3-D finite element model; 3D FEM; VDT screens; door; eddy-current shield; locally elevated B-field; magnetic shielding; power frequency magnetic fields; shielded wall; shielding effectiveness; substation; video display terminal; Bars; Eddy currents; Frequency; Gears; Magnetic field measurement; Magnetic shielding; Microwave technology; Substations; Switches; Vectors;
Conference_Titel :
Electromagnetic Compatibility, 1993. Symposium Record., 1993 IEEE International Symposium on
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-1304-6
DOI :
10.1109/ISEMC.1993.473759
