Impact On Electric Vehicle Integration Into Distribution Network

The development of the Electric Vehicle (EV) began in the mid-19th century and raised in popularity thru early 21th century. Countries around the world have put much effort to develop their economic and environmental statuses, particularly independence from oil consumption Electric Vehicles (EV) are promising technology that will decrease excessive use of oil. EV’s have been used around the world, because of their contribution to society in terms of decreasing CO2 intensity and decreasing gasoline consumption. EV’s provide great amount of support to economic and environmental issues.An increased growth of EV’s significantly affects the distribution grid sector of any country; this suggests that a fast response to increasing amounts of un-controlled loads caused by a massive EV’s must be dealt with, considering their increased load could lead to problems such as: overloading the nodes, high amount of peak load that leads to waste of resources, high amount of voltage deviation that may disrupt the load flow of voltages etc.Most recent studies analyze the factors caused by the extra load of EV’s on the grid during recharging time; these factors include charging behavior, charging speed and charging power, optimization of energy cost, driving patterns and battery life.To resolve these issues, controlled charging (smart charging) strategy is proposed and explained. Controlled charging strategy is used with the Monte Carlo method in Matlab/Simulink software. Smart charging generally focuses on the grid structures with aggregators managing a large number of EVs. In this thesis, controlled charge is from the network side,based on Monte Carlo simulation, by using probability density function to simulate the charging load, and according to the Beijing City, a distribution network structure is built and through the Matlab/ Simulink grid simulation is simulated.