Reserch On Pricing Model Of Micro Energy System Considering Demand Response

With the rapid development of energy internet,the connection between power system,natural gas system and thermal system comes closer and closer.However,the electricity price,natural gas price and heat price are still adopting the pricing methods of the individual energy system,which leads to the shortage of cooperation and flexibility between multienergy systems,and the advantages of integrated energy system cannot be fully unleash.Thus,it is necessary to study on the pricing model of integrated energy system.Base on the research background,a joint pricing model for micro-electric-gas-thermal integrated energy system is established,which is based on the general model of demand response for multiple energy systems in this paper.User can be guided to transfer the load in reason by integrated demand response.Under the premise of satisfying the user's demand,the purpose of reducing the operating costs of the integrated energy system and user's energy expenditure is achieved,besides,the fluctuation of system load can be stabilized,and energy efficiency can be improved.The specific work of this paper is as follows:Firstly,the research status of integrated energy systems,pricing models and demand response is described.A micro-electric-gas-thermal integrated energy system is established.The principle and mathematical model of the coupling components in the system are studied in detail.The characteristics and the regulative action on the power purchase side of the power system are analyzed.In addition,the application of demand response theory in single energy system and multi-energy system is analyzed,and the solving methods applied in this paper are given.Secondly,taking wind/storage microgird system as object,the pricing model of microgrid based on price demand response is studied.In this paper,an in-depth study of the demand response model,which is based on shifted load,is carried out,and it is improved with considering user's actual situation.Then a general model of demand response is proposed.A micro system pricing model that considers the combined effect of the energy storage system and the general model of demand response and maximizes the benefit of the microgrid is established.The model is modeled by the YALMIP toolbox and solved by the interior point method of the fmincon solver.The results show that the combined effect of the energy storage system and the demand response scheme can complement each other.Under the condition of maintaining the dynamic balance of both microgrid and user,the operating cost of mirogrid is reduced while meeting user demand completely.The effect that promotes user's reasonable distribution of time and electricity consumption is proved.Finally,the focus is on the joint pricing model for micro-integrated energy systems.In this paper,the concept of flexible load is proposed and modeled in detail.Based on this,a integrated demand response model considered flexible load is established.A joint pricing model for micro-electric-gas-thermal integrated energy system that includes combined heat and power system and air source heat pump system is proposed,which takes the maximum benefit of the integrated energy system as the objective and is combined with the integrated demand response model,thus the three kinds of load can be adjusted as a whole.The model is modeled by the YALMIP toolbox and solved by the interior point method of the fmincon solver.The results show that the proposed model can help user allocate energy consumption and time more reasonably.Under the condition of maintaining the entire energy consumption of users,it not only saves the user energy cost,but also reduces the overall cost of the integrated energy system.Energy efficiency has been greatly improved.