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The paper presents an efficient mathematical model to anticipate the effects of a transversal impedance installation in a bus of an electrical distribution network harmonic polluted, depending on the harmonic impedance seen in the respective section. There are two aspects of these effects: the amplification of the harmonic conditions in the bus, and the increase of the current on the respective impedance...
Power quality is the study of the sources, effects and control of disturbances which propagate via the electric power supply. The disturbances change the supply RMS voltage or its waveform (or very occasionally the frequency) and may originate from various sources. Within the paper, the authors are focusing on power quality monitoring. The presented approach refers to substation ancillary services...
Within the paper, the authors deal with electric substation ancillary services power consumption analysis. They are focusing on load curve numerical processing. A real case study is discussed, Timisoara 400/220/110 kV substation, the consumers being supplied from the autotransformer tertiary winding. The parameters specific to ancillary services load curves are computed using a software tool developed...
The assurance of the power quality supplied to consumers represents one of the most important issues that have to be fulfilled, related to substation ancillary services power supply sources. The aspects concerning the power quality are highlighted for the designed and planning of the substations belonging to the transmission network. Within the monitoring process several quantities are analyzed. The...
Because of the necessity to perform maintenance on one of the circuits of the high and very high tension double circuit lines that have one of the circuits operational, a case that lately becomes more frequent, the calculation of the currents and induced tensions in the circuit's conductors that is under induction is required to establish safety working conditions. This paper does not intend to modify...
The paper presents the modifications made in comparison with the actual functioning pattern which is part of the subsystem in the Western and South-Western area of the Romanian power system, the Winter-Evening-Peak regime. The 400 kV electrical line Portile de Fier-Resita was introduced, the transition of the electrical lines Resita-Timisoara and Timisoara-Sacalaz-Arad from 220 kV to 400 kV was made;...
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