Low-carbon Scheduling Of Power Systems With Electric Vehicles

With the rapid development of electric vehicles from the scale and technology level,the friendly interaction between electric vehicle clusters and power grid has become the focus of scholars at home and abroad.The most important feature of electric vehicles is their low carbon ability.However,if the energy source of electric vehicles comes from thermal power in the charging process of electric vehicles,it is equivalent that electric vehicles brings carbon emissions during driving.How electric vehicles effectively cooperate with clean energy such as wind power during the charging process and fully use their carbon emission reduction benefits put forward new requirements for the interaction between electric vehicle clusters and power grids.This paper focuses on the low-carbon performance of electric vehicles participating in power grid dispatching.The research has been carried out from the evaluation of the full life cycle carbon emission level of electric vehicles,the introduction of electric vehicle carbon quotas,and the participation of electric vehicle aggregators and wind power producers in the power market.Firstly,the article analyzes the factors affecting the charging load of electric vehicles,and models the disordered charging scene of electric vehicles.According to the characteristics of wind speed and other factors,the wind power output was modeled.The Monte Carlo simulation was used to simulate the electric vehicle's disordered charging scene and wind power output,which established the basis for the subsequent examples.Secondly,a full life cycle assessment is used to model the carbon emissions that may occur during the life cycle of an electric vehicle.The life cycle of electric vehicles is divided into automobile manufacturing,automobile use,and automobile recycling and scrapping.The three stages are modeled and analyzed.By solving the model and comparing it with the traditional fuel vehicle,it can be seen that the electric vehicle must fully cooperate with wind power during the charging process to establish the advantages in carbon emission reduction.It also demonstrate the necessity of electric vehicles participating in the low-carbon dispatching of the power system..Thirdly,in view of the fact that the existing carbon trading system does not guide the emission reduction of electric vehicles,the article defines the calculation method of carbon quotas for electric vehicles,and guides electric vehicles to fully reduce emissions and participate in the carbon trading market.A power system scheduling model with electric vehicle carbon quota is established,and the interests of the thermal power supplier and the electric vehicle user is balanced and considered.The results show that when electric vehicleclusters participate in the carbon trading market,electric vehicles will use more wind power during the charging process,which can effectively increase the utilization rate of wind power and reduce the carbon emission level of electric vehicles.At the same time,the paper analyzes the impact of electric vehicle quantity,wind power capacity,electric vehicle carbon quota price and time-sharing electricity price system on low-carbon dispatching.The results show that the simultaneous development of clean energy such as wind power and electric vehicles is important for the friendly interaction between electric vehicles and power grids.Finally,the benefits of wind power producers are considered in the scheduling,and the wind power output deviation cost is modeled.At the same time,the article establishes a two-layer game model containing a cooperative game between electric vehicles and wind power.The upper grid is the leader,with the goal of minimizing the system's carbon emissions.In the underlying,electric vehicle clusters,wind power generators and thermal power generators participate in the competition in the electricity market as followers.By charging and discharging,electric vehicles can absorb the excess power of wind power bidding or make up for the lack of output caused by insufficient wind power output.The benefits of electric vehicle aggregators and wind power producers are shared by Sharpley values.The game results prove that the model can effectively balance the interests of all parties.Although the interests of the thermal power side will be reduced,it can better guide electric vehicles to absorb wind power,improve the benefits of the wind power side,and reduce the carbon emission level of the system.