Research On Power Demand Response Of Electric Vehicle Power Group Based On Block Chain

In order to solve the problem of energy shortage,a large number of renewable sources such as wind and light are integrated into the power grid.However,the output of new energy is volatile,vulnerable to environmental impact,and has certain randomness and intermittency,which will not only pose a destructive threat to the stable operation of the power grid,but also lead to the problem of energy waste such as wind and light abandoning.Therefore,it is of great significance to maintain the load balance of the power grid and fully absorb new energy when wind,light and other renewable energy sources are randomly integrated into the power grid for stable operation of the power system,normal consumption of electricity by the people and improvement of environmental quality.As a daily transportation tool with energy storage characteristics,the number of electric vehicles increases in scale,which can effectively smooth the daily load of the power grid,compensate the intermittently of renewable energy,and provide auxiliary services for the power grid.For this reason,this paper focuses on the participation of electric vehicles in the renewable energy demand response and mainly does the following work:First,the congestion price algorithm is introduced.Based on the congestion price algorithm,a virtual congestion price algorithm is designed.Based on the virtual congestion price algorithm,an adaptive power adjustment scheme for electric vehicles to participate in demand response is obtained.In this scheme,the electric The urgency of the vehicle response,the power adjustment of the electric vehicle is determined according to the urgency of the electric vehicle,and the problem of power adjustment in the process of electric vehicle participation in demand response is solved.Second,based on the blockchain technology,the demand response hierarchical model of electric vehicle power group is designed.Based on this hierarchical model,the types of nodes in the blockchain and the block structure are designed,and smart rental contracts are designed to solve the problem of inconvenient response of electric vehicle users to participate in demand response and ensure the integrity and reliability of rental records And traceability,eliminating the cost of manual bookkeeping and auditing.Experiments have proved that the demand response of electric vehicle power group can effectively absorb renewable energy and ensure the stable operation of the power system.Finally,an electric vehicle transaction model based on smart contracts and double auction matching mechanism is proposed,in which a double auction matching mechanism is designed,and the problem of small number of transactions is solved by using this mechanism.Monte Carlo simulation experiments show that the transaction model based on the smart contract and two-way auction matching mechanism can increase the number of electricity transactions under conditions of oversupply,demand exceeds supply,and supply-demand balance,and has the effect of reducing peaks and valleys.