Modeling And Simulation Of Electric Vehicles Charging Synergistic Dispatch For Demand Side Response

The increasing EV charging load provides new dispatching resource for the control of power system.At present,there are lots of researches on the control of EV charging at home and abroad.However,rational market mechanism has not been formed,the initiative participation of the users is often neglected,and there is no engineering application.This paper studies on the market mechanism and engineering practice of demand side response in power system based on the EV charging control.Through the building of EV charging load model and the study of power system load control demand,this paper analysed the market mechanism of demand side response,put forward a synergistic dispatch method for EV charging control which can reflect the individual demand by users' bid settings,developed an EV charging control device responding to grid frequency fluctuation.Firstly,the EV charging load modle is established,which is the basis of the dispatch of EV charging load.The access time and the charging demand of EV users are analyzed on account of the users' travelling behavior characteristics.The characteristics of EV charging power is analyzed based on the modeling of charging equipment and power battery.The EV charging control method is analyzed based on the charging control scenarios and users' decision model.Based on the EV charging load model,an EV charging control capacity boundary analyzing method is proposed,and illustrated by case study.Secondly,the load control demand of the power system is analyzed,which is the purpose of the dispatch of EV charging load.The peak shaving demand and the frequency regulation demand of load dispatch are analyzed from the view of the power balance control.The congestion control demand of load dispatch is analyzed from the view of power transmission.The system reserve demand of load dispatch is analyzed from the view of system operation.Furthermore,the methods and scenarios of EV charging dispatch for demand side response are clearly defined.At last,the model and method of EV charging control participating in electricity market is discussed,which is the method of the dispatch of EV charging load.The time and religion division EV charging control framework based on the power system regulation characteristics is established.The trading flow of demand side response with EV charging control is analised based on the electricity market model.Power system synergistic dispatch method is proposed based on the distributd developping trend of power system.The pricing mechanism of demand side response is analyzed based on the locational marginal price in real time electricity price theory and the deviation assessment in current electric selling marke.An EV charging control device responding to grid frequency fluctuation is invented.And the control strategy is established according to the accidents reserve demand.Based on an urban power grid case,this paper analyzes the effect of EV charging control under dumb charging scenario and smart charging scenario.The innovation of this paper:1)Analyzed the demand side response pricing mechanism based on the deviation assessment in current electric selling market;2)Proposed a synergistic dispatch method for EV charging control which can reflect the individual demand by users' bid settings;3)Invented an EV charging control device responding to grid frequency fluctuation.This paper provided the demand side response pricing basis by the analysis of demand side response pricing mechanism.Took the users' individual demand into consideration by the design of an EV charging synergistic dispatch method with users'bidding.And provided reference for the engineering practice of EV charging control by inventing an EV charging control device responding to grid frequency fluctuation.