Research Of Impact On Power Grid And Operation Economics Of Electric Vehicle Charging Stations

As energy shortage and environmental pollution in recent years, people began to use electricity to replace oil as the car’s power and energy, reduce dependence on traditional energy sources, reduce environmental pollution and achieve sustainable development of the world. It is particularly important to carry out the research work on electric car charging stations as the energy provider. So this paper carries on research on car charging stations, the main work of this paper is as follows.First of all reading the relevant reference books, and grasping the principle of the electric vehicle charging station charger. Using MATLAB simulation software to establish a model to simulate and observing the operating status of the charging machine and analysis of the harmonics generated during the charger runs.Establishing electric vehicle discharge model and using MATLAB simulation software to simulate, observing lithium used in electric vehicles discharge state and analysis of the harmonics. On the basis of charge and discharge of electric vehicles, research on the V2G system about energy exchange between electric vehicles and the grid. Select the the Linyi City area as a template, on the basis of the number of cars and electricity load data in accordance with the relevant departments releasing data, establishing electric vehicle charging and discharging load calculation model in2020, and using random simulation method to simulate.In the last select Linyi City jiaozhuang and Qingdao City Xuejiadao electric vehicle charging station were as direct charge and replace battery samples, establishing the mathematical model for direct charging and replaceable battery electric vehicle charging stations according to survey data. Uncertainties affect the investment income of charging stations are analysis by the method of single factor sensitivity, look at the impact of the changes of different uncertainties on the income of the charging stations. Finally comparing the two charging mode, look at the the pros and cons of the two charging mode from an economic point of view.