Distributed Renewable Energy Consumption Strategy Considering Electric Vehicle Operation

With the rapid development of society,global energy consumption is also increasing,traditional fossil energy is gradually depleted,and the environmental pollution caused by it also needs to be solved urgently.The country is vigorously advocating green energy and green travel.Electric vehicles and renewable energy power generation are vigorously developing under the advocacy of the country.They will be an indispensable part of the power grid in the future,and their proportion will continue to grow.As more and more Distribute Generators(DG)are connected to the power grid,it is difficult for the existing grid frame and units with relatively low regulation capacity to absorb it,especially in the winter heating season.Many combined heat and power units,under the premise of ensuring the heating load,make the consumption of wind,solar and other renewable energy more serious.There are various types of electric vehicles,and their charging load will also have many changes.If they are allowed to charge in a large-scale disorderly manner,it will not only cause a waste of resources,but even cause adverse effects such as load peaks on the load and excessive line power.At the same time,electric vehicle charging load is a good demand response resource,taking into account the benefits of charging station operation,which can effectively reduce the peak-to-valley load.In this context,this article discusses the reasonable scheduling of electric vehicles and retired batteries to solve the problem of DG consumption and make the power distribution system safer and more economical.First,the resources of different types of electric vehicle charging station loads are integrated,and the electric vehicle charging station operators uniformly arrange and regulate to absorb renewable energy such as wind and solar,and analyze the load characteristics of different types of electric vehicle charging stations during free charging.According to the load characteristics of different types of charging stations,the characteristics of consuming renewable energy are analyzed,and a scheduling strategy combining incentive-based demand response and price-based demand response is proposed to guide different types of electric vehicle charging stations according to their own load.The property participates in the consumption of renewable energy.Secondly,for charging station operators in the process of participating in the grid to absorb renewable energy,there is still a certain amount of waste of wind and solar energy due to economic efficiency,which will become more and more difficult to use and difficult to handle,but still has a certain use value.The retired batteries of electric vehicles are used in cascades and combined with existing electric vehicle charging stations to form an integrated charging station.Based on this,an electric vehicle charging station that combines retired batteries with different types of electric vehicle charging stations is proposed.Dispatching model.Compared with the independent participation of electric vehicle charging stations,this model increases the benefits of charging station operators when participating in the consumption of renewable energy,and makes up for the fact that only electric vehicle charging stations consume renewable energy.Insufficient adjustment resources at the time of acceptance have reduced the amount of abandoned scenery to a certain extent.Finally,the simulation was performed on the IEEE 33-node test system.The results show that the dispatching strategy that combines incentive-based demand response and price-based demand response proposed in this paper can fully consider the interests of electric vehicle charging station operators while solving the problems of wind abandonment and solar power in the power grid to the greatest extent.At the same time,combining different types of electric vehicle charging stations with decommissioned battery systems can further reduce the amount of abandoned wind and solar,reduce the peak-to-valley difference of the load,and improve the source-load matching of the system.