Charging station electric vehicle online smooth charging system and method

Abstract

The invention provides a charging station electric vehicle online smooth charging system and method. The method includes a queuing step, a mediation step, an online charging step and a power update step. For the problem, only one optimization object can be considered, which is to minimize the charging costs of a charging station, or to maximize the stationarity of the charging power of the charging station. In the system and method, the minimizing of the charging costs of the charging station, the stability of the whole charging power of the charging station and the stability of the charging power of charging piles can be simultaneously considered; a multi-target optimization model can be established; the multi-target optimization model can be converted into a simple target optimization problem by utilizing an efficacy function method; and the charging power of an electric vehicle at the charging station at each time can be solved by designing an online smooth charging algorithm. The system and method can effectively enhance the charging efficiency of the charging station and reduce the waiting time of the electric vehicle on charging; and the system and method have advantages of being smooth in charging, low in charging cost and stable in charging power.

Description

technical field [0001] The present invention relates to the field of electric vehicle charging, in particular to a charging station electric vehicle online stable charging system and method, in particular to a single charging station electric vehicle online stable charging strategy for solving a multi-objective optimization model by means of an efficiency coefficient method. Background technique [0002] With the development of electric vehicle technology, there are more and more electric vehicles in cities, and the corresponding demand for electricity is also increasing. At present, the electricity price is set according to the peak and trough periods of electricity consumption. The electricity price during the peak period is the highest, while the electricity price during the trough period is the lowest. For a charging station, it is of course hoped that the charging cost should be as low as possible, so the charging station hopes that the electric vehicles will be the most...

AI Technical Summary

Problems solved by technology

At present, the electricity price is set according to the peak and trough periods of electricity consumption. The electricity price during the peak period is the highest, while the electricity price during the trough period is the lowest. For a charging station, it is of course hoped that the charging cost should be as low as possible, so the charging station hopes that the electric vehicles will be the most It is best to arrange charging during the low power consumption period. However, such a simple charging scheduling method cannot fully meet the charging needs of electric vehicles. Many trams arrive at the charging station and leave the charging station during the low power consumption period. The charging power of the charging station is too large, even exceeding the charging load of the charging station

In order to meet the fast charging needs of charging vehicles, charging stations will provide a large charging rate to complete charging quickly. However, such a high-power charging rate will inevitably lead to shortened service life of charging equipment and electric vehicle batteries.

Images