| Energy shortages and environmental issues urgently require changes in the energy supply side.The construction of energy systems that are economical,environmentally friendly,and energy-efficient is the key direction for energy development.With the development of global energy networks and domestic smart grids,the future The energy system architecture will be centered on electric energy,and various green and new energy sources will lead the collaborative development of all energy systems.Based on this,research on comprehensive energy systems will be carried out to achieve multi-energy complementarity and construction with sources,networks,stocks,and reservoirs.The interactive energy system has an important significance.Based on the in-depth research and analysis of the current comprehensive energy system and power demand side response,in response to the traditional demand side response in the thermal system description can not meet the application of integrated energy systems,proposed the user side involved in the electricity,gas,heat Integrated energy system joint optimization scheduling model.The coupling between energy hub model and energy multi-input and multi-output is used to describe the internal electricity,gas and heat in the integrated energy system.The user side uses the transferable power load classification to participate in the demand side power adjustment;considers the peak-valley electricity price in the power market,the gas price in the natural gas market,etc.,and uses the characteristics of the energy storage system for energy time shift,and sets the system operation cost within the scheduling period.The minimum sum of the load call costs is the objective function,and the thermodynamic equilibrium equation constraint that considers the system heat load demand and the electric boiler to provide power demand conversion is added.The simulation results show that,compared with the user-side optimization model that does not participate in the scheduling,the user-side participation can change the original power load curve to achieve peak-to-peak filling,reduce the total cost of the integrated energy system,ensure the normal operation of the integrated energy system and achieve the system Source,storage,and charge coordination.In order to further verify the economy,environmental protection,and high energy efficiency of the integrated energy system operation,the economic,environmental,and energy efficiency evaluation indicators of the integrated energy system were constructed,and different scenarios of energy supply systems were set up,which validated the integration of coordinated scheduling of multi-energy interconnections.Energy system economy,environmental protection and energy efficiency.At present,the integrated energy system can conduct electricity trading through the large-scale grid-connected grid and the electricity market,or it can run without electricity trading and isolated networks.In the transaction process,the price patterns of its energy trading have average electricity prices,peak-to-valley electricity prices and real-time electricity prices,etc.The optimized scheduling was carried out respectively.Analysis of simulation results shows that the integrated energy system with grid-connected type is more economical,and the real-time price transaction mode makes the system more responsive to price changes.Its operating cost is lower,and it can be used under different operating modes and transaction price modes.Integrated energy systems provide a certain reference.The coordinated energy source,storage,and charge of an integrated energy system are conducive to improving the economics of system operation.Through integrated energy systems,multi-energy interconnected coordinated scheduling methods are more economical,environmentally friendly,and energy-efficient,and they are connected with real-time price-based integrated energy sources.The system can better respond to changes in transaction prices to make it more economical to operate. |
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