Research On The Management Of Electric Vehicle Charging In Residential Quarters

Electric vehicles(EV)with low pollution and high energy conversion rate have been favored by countries all over the world in the past decade.With the gradual promotion and use of electric vehicles,its advantages are becoming more and more obvious.However,with the increasing number of electric vehicles,large-scale electric vehicle charging will reduce the economics of distribution network operation and even affect the safety and economy of distribution network operation.Therefore,the problem of electric vehicle charging needs to be urgently solved,And optimized for the problem of model error.Secondly,a multi-level sorting grouped orderly charging method is proposed,and its shortcomings are improved.This thesis studies the control strategy of AC charging piles for charging electric vehicles in residential quarters.First,based on the three elements of charging load modeling,a charging load model was established.The optimized model can effectively improve the accuracy of the estimated charging time.Compared with disordered charging,orderly charging control can not only improve the safety and economy of the distribution network operation in residential quarters,but also greatly reduce the charging costs of users and increase the income of agents,thereby achieving a win-win situation for all three parties.Third,the group charging method was used to improve the situation in the strategy that easily caused load jumps.Finally,the proposed method is used to study the charging behavior of residential quarters under different electric vehicle penetration rates.It is found that:? an orderly charging strategy can significantly improve the capacity of the residential quarters distribution network to accommodate electric vehicle charging loads,but with the penetration of electric vehicles The increase in the residential quarters distribution network will tend to saturate the electric vehicle charging load.? When orderly charging control is carried out in an electric car in a residential area,there is an optimum accommodation degree,and under this accommodation degree,the best effect can be achievedThe effectiveness of the improved model and ordered charging method is verified through simulation and experiment.Firstly,it is verified by experiments that the improved model can effectively reduce the effectiveness of the estimated charging time error.Secondly,the Monte Carlo method is used to simulate the orderly and disorderly charging of the residential community charging load.The simulation results verify the effectiveness of the ordered charging method for the orderly charging scheduling of electric vehicle charging behavior.