Title :
Numerical analysis of electric-field distribution around composite insulator and head of transmission tower
Author :
Zhang, Bo ; Han, Shejiao ; He, Jinliang ; Zeng, Rong ; Zhu, Puxuan
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
fDate :
4/1/2006 12:00:00 AM
Abstract :
In this paper, the electric-field distribution around the composite insulators and the heads of transmission towers is calculated by a model coupling the indirect boundary-element method to the moment method. The heterogeneous media, such as the composite insulators and the filament metal structures such as the transmission towers and the transmission lines, are considered altogether. The method can take into account not only the permittivity but also the resistivity of the media by using the complex resistivity in the frequency domain. The electric-field distribution around a three-phase 330-kV transmission tower with composite insulators was analyzed. The electric fields on the surfaces of the grading rings and the phase subconductors and at the ends of the composite insulators are analyzed. Both the method and the results are useful for the design of high-voltage transmission lines.
Keywords :
boundary-elements methods; composite insulators; electric fields; frequency-domain analysis; poles and towers; power transmission lines; 330 kV; composite insulators; electric-field distribution; filament metal structures; frequency domain; grading rings; heterogeneous media; high-voltage transmission lines; indirect boundary-element method; model coupling; moment method; numerical analysis; phase subconductors; transmission tower; Conductivity; Couplings; Dielectrics and electrical insulation; Metal-insulator structures; Moment methods; Nonhomogeneous media; Numerical analysis; Permittivity; Poles and towers; Transmission lines; Boundary-element methods (BEMs); electric fields; insulators; moment methods; transmission lines;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2005.859293
