Research On Dynamic Cost-sharing Mechanism Of Cooling, Heating And Power For A Regional Energy Supply System

Regional energy supply system is a kind of energy hub which can supply many kinds of energy,and the cost and price,as an important part of regional energy supply system,are very important to the research on the cost of cooling,heating and power of integrated energy system,the size of the cost will affect the energy supply-side revenue and demand-side to bear the size of the cost.However,as far as the price form of energy supply in China’s integrated energy system is concerned,the energy price is relatively single,and the differences in the production and transportation costs of different energy products and different users are not taken into account,as a result,the operation cost of the energy supply enterprise is large and the energy price of the user is high.At present,the research mainly focuses on the cost allocation of power transmission and distribution,and does not involve the allocation of heat cost,and most of the research focuses on the cost of supply side,few studies have focused on cost-sharing on the demand side.Therefore,starting from the analysis of energy consumption characteristics of users and regions,this paper establishes the cost-sharing model of cooling,heating and power at the energy supply end and the cost-sharing model of cooling,heating and power at the energy transmission and distribution end,the cold,heat and power cost of the regional energy supply system is studied by connecting the supply end,the transmission and distribution end and the demand end.Firstly,the energy consumption of a typical single building and the total energy consumption of the system are analyzed by the software of Grasshopper parameterization based on Rhino,and the energy consumption characteristics of each type of building are calculated.Secondly,based on the dynamic load characteristics of the regional energy system and the basic principle of cost allocation in thermoeconomics,the cost model of the energy supply end is established,at the same time,the mathematical calculation model of thermal economics is constructed to clarify the energy conversion characteristics and energy supply mechanism.Taking a regional energy station as the project background,taking the optimal thermoeconomic coefficient as the objective function,the optimal energy flow of the system is solved by MATLAB software,and the cost allocation result of the energy supply end is obtained.Thirdly,from the point of view of distribution network and heating pipe network,a cost-sharing model for energy transmission of regional integrated energy system is established,according to the analysis results of energy consumption characteristics of different energy users,the cost sharing coefficients of energy distribution are calculated,and the cost sharing results of cooling,heating and power are obtained.Finally,in the background of a regional energy station project,based on the results of the system dynamic cogeneration cost allocation and the transmission and distribution dynamic cogeneration cost,the dynamic cogeneration cost of the user’s energy end is obtained,the feasibility and uncertainty of the results are analyzed.The feasibility and uncertainty analysis is carried out by comparing the calculated results with the actual price,which shows that the peak and valley cost time periods of different energy consumption terminals are not consistent,different Peak and valley price periods and peak and valley price levels can be set according to different energy end,and different heating price can be set for different energy end.The research results of this paper can provide a theoretical basis for constructing a reasonable energy cost allocation system for regional integrated energy system,and can quantify the costs of different energy products when users respond to energy use,it provides a reference for energy companies to formulate reasonable and scientific time-sharing energy pricing policies and energy supply schemes for different users.