Electric automobile real-time charging method based on single electric automobile charging forecasting
A technology of electric vehicles and charging methods, which is applied in the field of real-time charging of electric vehicles, and can solve the problems of not considering charging vehicles connected to the grid, and the optimization effect is not good enough.
Active Publication Date: 2015-05-20
TSINGHUA UNIV
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[0003] In the current real-time optimization method, only the impact of grid-connected charging vehicles on peak shaving and valley filling is considered, and the impact of grid-connected charging vehicles in the future is not considered. Although the method is feasible, because the known information of optimization is limited to grid-connected vehicles, when electric vehicles grid-connected time is scattered The optimization is not good enough when
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[0022] The electric vehicle real-time charging method based on single electric vehicle charging prediction proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:
[0023] (1) At the dispatching time t of the power system, obtain the network connection time of the nth electric vehicle among the N electric vehicles that have been connected to the network from the power system control center and time to leave Note that the rated charging power of the nth electric vehicle is The net charging demand of the nth electric vehicle at dispatch time t is
[0024] (2) According to the data obtained above, determine the set of electric vehicles participating in real-time charging at the scheduling time t in the power system as where set M t The electric vehicles in the equation meet the following conditions: connect to the grid before the dispatch time t, leave the grid after the dispatch time t, and the net charging demand ...
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A method and a device for charging an electric vehicle in a power system are provided. The method includes: obtaining a first electric vehicle connected to the power system, and obtaining a rated charging power and a first charging requirement; determining a first charging period corresponding to the first electric vehicle; determining a forecast period, and obtaining a second electric vehicle to be connected to the power system; revising the first charging period to obtain a second charging period, and obtaining a second charging requirement and a maximum charging power; establishing a charging model, establishing a first constraint of the charging model, and establishing a second constraint of the charging model; and solving the charging model under the first constraint and the second constraint to obtain an optimal charging power so as to charge each first electric vehicle under the optimal charging power.
Description
technical field [0001] The invention relates to a real-time charging method for an electric vehicle based on charging prediction of a single electric vehicle, and belongs to the technical field of power system operation and control. Background technique [0002] As a representative of clean energy vehicles, electric vehicles have developed rapidly in recent years. After the number of electric vehicles reaches a certain scale, if they are allowed to charge disorderly, it will have a negative impact on the power system, causing a decline in power quality, increasing network losses, and even endangering the stability of the power system. Therefore, it is necessary to achieve real-time optimization of electric vehicle charging, avoid the above-mentioned effects, and realize peak-shaving and valley-filling of the power system. [0003] In the current real-time optimization method, only the impact of grid-connected charging vehicles on peak shaving and valley filling is considere...
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IPC IPC(8): H02J3/00H01M10/44
CPCB60L55/00B60L58/10Y02E60/00Y02T10/70Y04S10/126Y02T10/7072Y02T90/12Y02T90/14Y02T90/16
Inventor 孙宏斌郭庆来张伯明吴文传李正烁辛蜀骏
Owner TSINGHUA UNIV