Influence of contact resistance on shielding efficiency of shielding gutters for HV cables

Author

Koroglu, S. ; Sergeant, P. ; Sabariego, R. ; Dang, Vuong Q. ; De Wulf, M.

Author_Institution

Dept. Electr. Eng., Yildiz Tech. Univ., Besiktas-Istanbul, Turkey

fYear

2010

fDate

9-12 May 2010

Firstpage

1

Lastpage

1

Abstract

Shielding of buried three phase high voltage cables can be done by placing the cables in conducting ferromagnetic U-shaped gutters covered by plates. In case of a perfect electrical contact between adjacent gutters and between adjacent cover plates, the induced currents in the shield efficiently reduce the field generated in the vicinity of the cables. However, as a perfect contact cannot be guaranteed, it is useful to quantify the effect of a bad electrical contact on the shielding performance. From 2D FEM, 3D FEM and experiments, it is observed that a bad contact does not influence significantly the shielding if the axial length of the plates is relatively long compared to their other dimensions.

Keywords

cable shielding; electrical contacts; finite element analysis; power cables; 2D FEM; 3D FEM; HV cables; buried three phase high voltage cable shielding; contact resistance; cover plates; ferromagnetic U-shaped gutters; perfect electrical contact; shielding efficiency; shielding gutters; Automation; Cables; Contact resistance; Density measurement; Electrical resistance measurement; Magnetic field measurement; Magnetic materials; Power engineering and energy; Shape; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Computation (CEFC), 2010 14th Biennial IEEE Conference on

Conference_Location

Chicago, IL

Print_ISBN

978-1-4244-7059-4

Type

conf

DOI

10.1109/CEFC.2010.5481447

Filename

5481447