TITLE:
An Alternative Three-phase Transmission Lines Model in Phase Domain
AUTHORS:
C. G. Carvalho, S. Kurokawa, J. Pissolato
KEYWORDS:
Transmission Lines; Frequency Dependence; Modal Representation; Transformation Matrix; Newton-Raphson; Phase Domain
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
21,
2013
ABSTRACT:
The objective of this paper is to show an alternative model of a non-transposed three-phase transmission line with a vertical symmetry plane in phase domain. Due the line physical characteristics, it can be represented by a system consisting of a single?phase and a two-phase line. In this system, the equations
describing the behavior of the values in single-phase line terminals are known, while the equations for two-phase line to be obtained. Using a transformation matrix written
explicitly according to three-phase line
parameters, it is possible to obtain
the currents and voltages in phase domain of two-phase line.
Then, modal values of three-phase line are converted into phase domain
and thus obtain
the analytical model for this line. To verify
the performance of this model, it was used to simulate the energization of a 440 kV three-phase
line and the results were compared to results obtained using a classical model.