Electric vehicle charging strategy determination method and device
A technology for electric vehicles and charging strategies, applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of increasing system computing and communication burdens
Active Publication Date: 2021-01-19
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology
However, due to the mutual independence between electric vehicles, this traditional interaction mechanism is not necessarily able to find the optimal charging strategy combination that minimizes the energy cost of the charging station, and it will also increase the calculation of the system when the problem scale is large. and communication burden
In addition, in the existing electric vehicle charging research work, most of them only consider that the on-board battery has only two states of charging and idle in the charging station, and can only be directly controlled by the aggregator.
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[0035] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.
[0036] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features, ...
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The invention provides an electric vehicle charging strategy determination method and device, and the method comprises the steps: carrying out the modeling of a charging problem of an electric vehiclethrough a non-cooperative game framework, and enabling a non-cooperative game model to comprise an electric vehicle set in a charging station, a strategy set of each electric vehicle in the electricvehicle set, and the charging cost of each electric vehicle, the strategy set and the charging cost of each electric automobile depend on the strategy set and the charging strategies of other electricautomobiles in the electric automobile set. Furthermore, the invention provides a distributed Nash equilibrium search algorithm based on a Newton fixed point method to solve the non-cooperative gamemodel, and an optimal charging strategy of each electric vehicle is obtained, so that the total energy cost of the charging station is minimum. According to the method, the strategy interaction relationship among a plurality of electric vehicles in the charging station is considered, and the charging and discharging flexibility of the electric vehicles is fully utilized, so that the total energy cost of the charging station is minimized while the charging requirements of the electric vehicles and the constraint conditions of the charging station are met.
Description
technical field [0001] The present disclosure relates to the technical field of orderly charging and discharging control of electric vehicles, in particular to a method and device for determining a charging strategy of an electric vehicle. Background technique [0002] Electric vehicle V2G (vehicle to grid) technology refers to the technology that electric vehicles send power to the grid. Its core idea is to use a large number of electric vehicle energy storage as a buffer between the grid and renewable energy to realize the two-way interaction between electric vehicles and the grid. Specifically, when the grid load is too high, electric vehicles will send power to the grid; and when the grid load is low, the grid can store excess power generation in electric vehicles to avoid waste of resources. Through this V2G technology, electric vehicle owners can purchase electricity from the grid and store it in their batteries when the electricity price is low, and sell electricity t...
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IPC IPC(8): B60L53/64G06F30/20
CPCB60L53/64G06F30/20G06F2111/10G06F2111/04Y02T10/70Y02T10/7072Y02T90/12
Inventor 秦家虎万艳妮李曼
Owner UNIV OF SCI & TECH OF CHINA