Title :
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
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;
Journal_Title :
Power Systems, IEEE Transactions on
DOI :
10.1109/TPWRS.2006.889117
