The induced magnetic field calculation of three phase overhead transmission lines above a lossy ground as a frequency-dependent complex function

Author

Tu, Vu Phan ; Tlusty, Josef

Author_Institution

Dept. of Electr. Power Eng., Ho Chi Minh Univ. of Technol., Vietnam

fYear

2003

fDate

7-9 May 2003

Firstpage

154

Lastpage

158

Abstract

This paper presents a calculation of the induced magnetic field which is generated by high voltage, super-high voltage and extra high voltage transmission lines. The frequency-dependent model considers self and mutual impedances of transmission lines, taking into account the influence of bundled conductors using a sag in one span, ground-return path with earth resistivity which is as a frequency-dependent complex function. Analysis results obtained with 110 kV; 230 kV; 500 kV and 765 kV lines are presented by means of graphs.

Keywords

earthing; electric impedance; electromagnetic induction; magnetic fields; power overhead lines; transmission line theory; 110 kV; 230 kV; 500 kV; 765 kV; bundled conductors; earth resistivity; extra high voltage transmission lines; frequency dependent complex function; frequency-dependent model; ground return path; high voltage. transmission lines; induced magnetic field; mutual impedances; overhead transmission lines; self impedances; super-high voltage transmission lines; Conductivity; Conductors; Frequency; Impedance; Inductance; Magnetic field measurement; Magnetic fields; Power transmission lines; Propagation losses; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering, 2003 Large Engineering Systems Conference on

Print_ISBN

0-7803-7863-6

Type

conf

DOI

10.1109/LESCPE.2003.1204696

Filename

1204696