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The continuously growing electrical power demand is more and more faced by the increase of generation from renewable energy sources. Given the uneven distribution of those resources in the power system, an increase in the transmission lines current rating (also called ampacity) is expected in the next future, to avoid the formation of bottlenecks. Given the difficulties in building new lines, due...
This paper is concerned with the calculations of the phase current asymmetry on the power vhv overhead transmission line with two circuits. Presented algorithm allows taking into consideration the mutual inductive and capacitive couplings between the conductors. Their effect can be reduced with the help of the transmission line transposition. On the non-transposed transmission line these couplings...
The paper deals with the calculation of Joule's losses on overhead transmission lines. The presented method allows taking into consideration the influence of a current asymmetry caused by various conductors layout and their inductive and capacitive couplings. The losses evaluation has been carried out with respect to the total transmitted energy, data given by year and day load diagrams were used...
The main objective of this work is to quantitatively study the extraction problem of distributed parameters of unparallel transmission lines, especially for one specific type of unparallel transmission line model. The infinitesimal transmission lines are equivalent to the parallel transmission lines, and the estimation method of distributed parameters is presented based on the original physical definition...
This paper represents a developed procedure for the evaluation of flashover rates caused by both lightning vertical and non-vertical strokes on transmission lines using a Monte Carlo method. The main goal of this paper is increase the accuracy of the flashover rates through an accurate modelling of network components such as footing impedance, transmission tower and the chain of insulators and also...
In this article, the feasibility to obtain power from the shield wires of a transmission line, as a result of the electromagnetic induction effect, will be presented. The phase conductors of the considered transmission line are horizontally arranged each having a quadruple bundle configuration. The transmission line used during the study operates at 525 kV. The results obtained showed that this form...
This paper describes shielding method for lightning protection on high voltage transmission line and also how to protect lightning effects on the line. If the fault is present, additional power system will be damaged and minimizing system reliability. This shielding method used in transmission line bases the unequal lightning ground flash density all over the country. This paper is tend to specialize...
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