Abstract:
A fast charging guidance strategy for multiple demands of the electric vehicles(EVs),fast charging stations(FCSs)and the distribution network is proposed.Firstly,a charging guidance architecture in electric vehicle,fast charging station and distribution network cooperation mode is introduced.Then,based on the distribution result of fast charging demand by origin destination(OD)analysis,a double-layer queue model is proposed to simulate the dynamic queue of FCSs.Secondly,according to the dynamic queue and charging load receptivity under the constrain of node voltage in distribution network,a charging price model is built by adapting the demand function of dynamic electricity price to guide the user to choose the FCSs with the goal of minimizing the charging cost.Finally,taking main urban areas of a city as an example,simulation is conducted under different participations of 1 000 EVs with fast charging demand.The result shows that proposed charging guidance strategy can not only save the charging cost of users,but also improve the operation efficiency of FCSs and ensure the safety operation of distribution network.