Behavior of overhead transmission line parameters on the presence of ground wires

Author

Kurokawa, Sérgio ; Filho, José Pissolato ; Tavares, Maria Cristina ; Portela, Carlos M. ; Prado, Afonso J.

Author_Institution

Faculdade de Engenharia de Ilha Solteira, Univ. Estadual Paulista, Ilha Soltiera, Brazil

Volume

20

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

1669

Lastpage

1676

Abstract

Initially this paper shows the ground wire reduction process for generic multiphase transmission lines and after, the ground wire reduction process for a specific 440-kV three-phase overhead transmission line. Following this, the influence of the ground wire reduction process considering two situations is shown: first, considering frequency independence and second, when these parameters are considered as frequency dependent. This paper presents analytical results for generic multiphase transmission lines. For a specific 440-kV three-phase overhead transmission line, analytical and graphic results are shown considering real data for every frequency between 10 Hz and 1 MHz.

Keywords

earthing; frequency-domain analysis; power overhead lines; transmission line matrix methods; transmission network calculations; 10 Hz to 1 MHz; 440 kV; frequency-domain analysis; generic multiphase transmission lines; ground wire reduction; overhead transmission line parameters; transmission-line matrix methods; transmission-line theory; Frequency; Grounding; Impedance; Matrix decomposition; Power transmission lines; Transmission line matrix methods; Transmission line theory; Transmission lines; Voltage; Wires; Admittance matrix; electromagnetic (EM) field; frequency-domain analysis; impedance matrix; multiconductor transmission lines; transmission-line matrix methods; transmission-line theory;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.833916

Filename

1413441