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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 ...
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 ...
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 ...
Determination and statistical treatment of short-circuit currents for faults on the lines of networks of 440 kV CESP system
(1995-12-01)
The distribution of short-circuit current is investigated by means of two methods, one direct and the other analytic; both methods consider uniform probability distribution of line faults. In the direct method, the procedure ...
Alternative continuation method for loading margin improvement and transmission losses reduction
(2004-12-01)
This paper presents an alternative methodology for loading margin improvement and total real power losses reduction by using a continuation method. In order to attain this goal, a parameterizing equation based on the total ...
Fault identification in distribution lines using intelligent systems and statistical methods
(2006-12-01)
The main objective involved with this paper consists of presenting the results obtained from the application of artificial neural networks and statistical tools in the automatic identification and classification process ...
Harmonic propagation analysis in electric energy distribution systems
(2011-12-01)
An important alteration of the equivalent loads profile has been observed in the electrical energy distribution systems, for the last years. Such fact is due to the significant increment of the electronic processors of ...
Mutual coupling modeling in transmission lines directly in the phase domain
(2011-12-12)
This paper describes a computational model based on lumped elements for the mutual coupling between phases in three-phase transmission lines without the explicit use of modal transformation matrices. The self and mutual ...
Comparison of algorithms for loss allocation in transmission networks considering power redispatch
(2004-12-01)
An analysis of the performances of three important methods for generators and loads loss allocation is presented. The discussed methods are: based on pro-rata technique; based on the incremental technique; and based on ...
The use of current transformers for noise detection due to sparking in insulators strings in high voltage transmission lines
(2010-12-31)
In a general way, in an electric power utility the current transformers (CT) are used to measurement and protection of transmission lines (TL) 1 The Power Line Carriers systems (PLC) are used for communication between ...