This paper offers a perspective of the development of Electric Vehicles (EVs), the actual state of the standardization, charging modes, impact of charging EVs in the low voltage networks and possibilities for implementation of Vehicle-to-Grid (V2G) concept. The main objective of this paper is to study the influence of charging a large number of Electric Vehicles on the power losses and voltage plan of the electric networks. The test were performed on a radial low voltage network with 12 consumers and there are studied three cases: without EVs, with a 50% penetration rate of the EVs and different time intervals for charging. Power flow calculation of the proposed network is realized in Neplan software for hourly values of power consume.
The main objective of this paper is to study the influence of dispersed generation upon the steady state of distribution networks, especially upon the voltage level, active power losses and branch currents flow. Power flow calculation of electrical distribution networks with and without distributed generation was realized in MATLAB environment, based on backward-forward sweep. The tests were performed on a arborescent network with eleven nodes. The results of the proposed method were verified using NEPLAN software. Another important aspect studied in this paper was the dispersed generators possibility to improve the voltage level in distribution networks.Index Terms-distributed generation, distribution networks, active power losses, backward-forward sweep, branch currents, steady state, voltage level.
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