DocumentCode :
3047710
Title :
Single real transformation matrix application for asymmetrical three-phase line transient analyses
Author :
Prado, A.J. ; Kurokawa, S. ; Filho, J. Pissolato ; Bovolato, L.F.
Author_Institution :
Dept. of Electr. Eng. at UEL, State Univ. of Londrina, Londrina
fYear :
2008
fDate :
13-15 Aug. 2008
Firstpage :
1
Lastpage :
6
Abstract :
Single real transformation matrices can change the Z and Y matrices into diagonal ones for transposed three-phase lines. Considering non-transposed non-symmetrical three-phase lines, the errors between the Clarkepsilas matrix application results (called quasi-modes) and the eigenvectors are negligible. In this text, some other analyses are performed for two line designs. So, the arithmetic media among error curves tends to zero for every design. The non-diagonal elements of the quasi-mode matrix are compared to the correspondent eigenvalues. There are non-diagonal elements that present significant relative values when compared to the eigenvalues. Using all these analyses, it is suggested the hypothesis that the interactions among the Clarkepsilas matrix application, the non-symmetrical line characteristics and propagated signal spectrum can be maximizing the error of the proposed single real transformation matrix application. Because of this, in future development, correction procedures should be applied to Clarkepsilas matrix searching for minimizing the non-diagonal elements of the quasi-mode matrices.
Keywords :
matrix algebra; power system transients; transmission networks; asymmetrical three-phase line transient analyses; quasimode matrices; quasimode matrix; single real transformation matrix; transposed three-phase lines; Admittance; Eigenvalues and eigenfunctions; Equations; Frequency dependence; Impedance; Performance analysis; Symmetric matrices; TV; Transient analysis; Transmission line matrix methods; Clarke matrix; asymmetrical lines; eigenvalue; eigenvector; error analysis; frequency dependent parameters; phase-mode transformation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Transmission and Distribution Conference and Exposition: Latin America, 2008 IEEE/PES
Conference_Location :
Bogota
Print_ISBN :
978-1-4244-2217-3
Electronic_ISBN :
978-1-4244-2218-0
Type :
conf
DOI :
10.1109/TDC-LA.2008.4641727
Filename :
4641727
Link To Document :
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