Strategy And Implementation Of EV Charging Load Control Under Typical-scenario

Since the beginning of the 21 st century,global warming and environmental protection have become increasingly prominent,and traditional fossil energy is also facing shortage and non-renewable problems.Therefore,all countries are trying to find effective solutions to the problem in the world.Electric Vehicle(EV),as an important part of new energy vehicles,has been widely concerned by governments and enterprises around the world because of its good environmental protection characteristics,showing great advantages in energy conservation,emission reduction and energy substitution.EV has been rapidly developed globally,but EV charging behavior is random and intermittent.With the increase of EV penetration rate,large-scale EV access will have an impact on power quality,economy and reliability of distribution network.Therefore,this paper studies the charging load characteristics of EVs in different scenarios and how to coordinate and control the charging load of EVs.This paper is divided into four parts to discuss the charging load control of ELECTRIC vehicles.Firstly,the research background of this paper is introduced,the development status of electric vehicles at home and abroad is clarified,and the influence of the development of electric vehicles on the power grid is analyzed,so as to draw the conclusion that it is necessary to study the charging load control of electric vehicles.Investigate the research status of charging load control strategy,compare the advantages and disadvantages of the research on load control strategy,establish the research direction for the analysis of the temporal and spatial characteristics of charging load,and determine the basic direction for the research in this paper.Secondly,based on the results of the investigation,analysis the influence factors of charging load,the object of study can be divided into electric cars,electric taxi,electric buses and electric car,analysis of different types of electric vehicle driving characteristics,load model based on temporal and spatial characteristics of charge,and the monte carlo simulation method,for electric vehicle charging load forecasting.Then,based on load modeling and prediction results,charging load control strategies considering demand differentiation are studied and orderly charging control strategies for different scenarios with fixed charging habits and random charging habits are proposed.Aiming at the fixed charging habit scenario,an orderly charging control strategy based on real-time residual controllable capacity is proposed,and it is suggested to optimize the subsidized electricity price by considering the executable constraint before the implementation of the strategy,so as to ensure the maximization of the interests of both users and power grid or operator.Aiming at the random charging habit scenario,the orderly charging control process of EV is presented,and the simulation of typical scenarios proves that the effective power control can be realized on the premise of not affecting the user’s car demand.Finally,combined with the application of relevant examples in a certain region of Guangdong province,the application data analysis under typical scenarios proves that the control of EV charging load can effectively relieve the load pressure on the power grid and play a positive role in guiding peak load shifting.