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Real-time estimation of transmission line impedance based on modal analysis theory
(2011-12-09)
The objective of this paper is to show a methodology to estimate the longitudinal parameters of transmission lines. The method is based on the modal analysis theory and developed from the currents and voltages measured at ...
Introduction of a non-conventional solution for Amazon transmission system: Analysis of the electric aspects
(2011-12-09)
This article shows an analysis of the longitudinal electric parameters of a three-phase transmission line/section using a 280-meter high steel tower. This characteristic, the height of the line conductors and distance ...
Representation of transmission lines in modal domain using analytical transformation matrices
(2011-05-31)
The phases of a transmission line are tightly coupled due to mutual impedances and admittances of the line. One way to accomplish the calculations of currents and voltages in multi-phase lines consists in representing them ...
A First approach on the new transmission system in northern Brazil
(2011-12-01)
This article shows an analysis of the electrical parameters of a three-phase transmission line section using a relatively new design for steel towers characterized by 280 meters high. These main features, the height of the ...
Identification of transmission line parameters from temporal measurements of currents and voltages in their terminals: Influence oh the length line
(2012-12-11)
The objective of this paper is to show a methodology to estimate transmission line parameters. The method is applied in a single-phase transmission line using the method of least squares. In this method the longitudinal ...
Corona effect in frequency dependent transmission line models
(2008-12-01)
The inclusion of the corona effect in a frequency dependent transmission line model is proposed in this paper. The transmission line is represented through a cascade of π circuits and the frequency dependence of the ...
A transmission line model developed directly in phase domain
(2012-12-11)
The phases of a transmission line are tightly coupled due to mutual impedances and admittances of the line. One way to accomplish the calculations of currents and voltages in multi-phase lines consists in representing them ...
An alternative proposal for the implementation of the folded line equivalent
(2021-08-15)
This article presents an alternative transmission line model, using the formulation of the Folded Line Equivalent (FLE). The model is based on Norton equivalents derived from the FLE short-circuit and open-circuit admittance ...
Sensitivity analysis for overload-relief in transmission lines using an implicitly coupled method (CRIC)
(2006-12-01)
The restructuring of energy markets to provide free access to the networks and the consequent increase of the number of power transactions has been causing congestions in transmission systems. As consequence, the networks ...
Some considerations about a new procedure to derive transmission line parameters concerning three-phase lines
(2006-12-01)
The paper shows an alternative methodology to calculate transmission line parameters per unit length and to apply it in a three-phase line with a vertical symmetry plane. This procedure is derived from a general procedure ...