An Alternative Modal Representation of a Symmetrical Nontransposed Three-Phase Transmission Line

Author

Kurokawa, Sergio ; Daltin, Rodrigo S. ; Prado, Afonso J. ; Pissolato, Jose

Author_Institution

Univ. Estadual Pardista, Ilha Solteira

Volume

22

Issue

1

fYear

2007

Firstpage

500

Lastpage

501

Abstract

The objective of this letter is to propose an alternative modal representation of a nontransposed three-phase transmission line with a vertical symmetry plane by using two transformation matrices. Initially, Clarke´s matrix is used to separate the line into components alpha,beta, and zero. Because alpha and zero components are not exact modes, they can be considered as being a two-phase line that will be decomposed in its exact modes by using a 2times2 modal transformation matrix. This letter will describe the characteristics of the two-phase line before mentioned. This modal representation is applied to decouple a nontransposed three-phase transmission line with a vertical symmetry plane whose nominal voltage is 440kV

Keywords

power transmission lines; transmission line matrix methods; 440 kV; Clarke matrix; modal transformation matrix; nominal voltage; symmetrical nontransposed three-phase transmission line; two-phase lines; vertical symmetry plane; Admittance; Conductors; Frequency; Impedance; Matrix decomposition; Power system modeling; Power transmission lines; Transmission line matrix methods; Transmission line theory; Transmission lines; Frequency domain analysis; multimode transmission line; transmission line matrix methods; transmission line theory;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2006.889117

Filename

4077120