domingo, 27 de febrero de 2011

CALCULATION OF TRANSMISSION LINE TRANSIENTS USING POLAR DECOMPOSITION

Bjern Gustavsen, Adlam Semlyen (LF), Department of Electrical and Computer Engineering University of Toronto Toronto, Ontario, Canada M5S 3G4

Abstract: The paper presents a new transmission line model suitable for the calculation of electromagnetic transients on overhead lines and underground cables. This is achieved by expanding the fitted modes of a conventional line model with constant transformation matrices into simple fractions on the diagonal, and by extending the transformation matrices into rectangular matrices. The new transformation matrices are then refined by a simple iteration procedure based on least squares fitting in the phase domain. The method is demonstrated to give accurate simulation results for both overhead lines and underground cables.

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