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Nowadays, the role and functionality of power supply system of the consumer (PSC) increases. As interface between the power distribution system and consumer power system, PSC has a strong influence on quality and efficiency of energy and implicitly on the level of energy costs. Besides specific measures for increasing efficiency and reduction of energy costs, the industrial consumer is interested...
Currently, major technical challenges linked to the implementation strategy of Distributed Generation (DG) are associated with new studies and researches regarding the impact of renewable energy sources on the parameters of power transmission and distribution networks. To increase the energy efficiency and to reduce the power losses in power distribution networks, specific measures are proposed: increasing...
Currently, major technical challenges linked to the implementation strategy of smart grids are associated with new studies and researches on the impact of renewables energy sources on the parameters of power transmission and distribution networks. Current dedicated softwares permit the modeling and simulation of power distribution structure which includes different types of renewable energy sources...
Associated phenomena usually to interruption of neutral conductor and to change of the dispersion earth resistance touch a sensitive aspect of low-voltage power networks. Therefore, a tool is needed to evaluate the risks associated with this behaviour. This paper proposes a mathematical model to describe realistic influence of dispersion earth resistance of earth electrode and unbalanced power supply...
Phenomena usually associated with neutral conductor interruption are sensitive issues of low voltage electrical networks. These phenomena are now directly related to the power quality, especially in the case of three-phase unbalance consumers supplied with low balanced/unlalanced three-phase system of voltages. Therefore a detailed analyse for assessment of the risk development of these events is...
The current waveforms in low voltage electrical networks are frequently harmonic polluted due to actual equipment, most of them being electronically controlled. To reduce the distortions and unbalance effects on the low voltage electrical networks, new methods of monitoring are required, using a more precise set of indicators for power quality analysis. In this paper a modeling of the current waveforms...
The paper deals with an analysis upon the unbalance regime of the three-phase consumers supplied with a sinusoidal voltage system and, upon the voltage and current unbalance indicators. For rapidly calculating the unbalance regime specific indicators, knowing the characteristics of the consumers fed from the three-phase network, a software application in the LabVIEW 8.1 environment was developed....
Load curve analysis is an efficient instrument aimed at carrying through studies and planning, necessary for developing electric energy distribution networks and for reducing the electric energy internal consumption. The paper herein presents the analysis of the load curves for an industrial consumer fed from the network of 20 kV, 50 Hz. There are calculated the characteristic parameters for daily...
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