Research On Energy Saving Optimization Of Integrated Energy System Considering Generalized Electric Heating Demand Response And Ladder Carbon Trading Mechanism

With the global energy crisis and the worsening of environmental pollution,the traditional energy structure dominated by fossil fuels is facing transformation.How to achieve high efficiency and low carbon energy development has become the key to the development of countries around the world.The integrated energy system uses advanced technology to integrate various heterogeneous energy sources of electric heat,realizes the complementary advantages of various energy sources,and can effectively absorb new energy sources,which has become the key to realizing energy transformation at this stage.However,there are many internal devices,complex structures,and cumbersome constraints in the integrated energy system,which makes it extremely difficult to study the energy-saving optimization of the integrated energy system.Especially with the proposal of the "dual carbon" goal and the development of the carbon trading market,the traditional operation strategy of the integrated energy system has changed,which brings new challenges to its low-carbon dispatch.Therefore,in order to realize the low-carbon economic operation of the integrated energy system,this paper proposes a research on the energy-saving optimization of the integrated energy system considering the generalized electric heating demand response and the stepped carbon trading mechanism.Optimization,the main work of this paper is as follows:First,a typical comprehensive energy system model is established,and the main equipment inside the system,such as cogeneration unit and energy storage equipment,are modeled and analyzed.On the other hand,the generalized electrothermal demand response is introduced into the integrated energy system,P2G power-to-gas and ORC organic Rankine cycle are introduced on the source side,and the two devices are modeled and analyzed;the traditional demand side response is introduced on the load side,and a variety of energy sources are used.Complementary and mutually beneficial,realize the lowcarbon economic operation of the comprehensive energy system.Secondly,it introduces the carbon trading market and the theoretical knowledge related to step-by-step carbon trading.The development status of the global carbon trading market and China’s carbon trading market is introduced from the aspects of development history,basic settings,allowance allocation,carbon price,etc.In order to further limit the carbon emissions of the integrated energy system,a stepped carbon trading mechanism is introduced into the integrated energy system,and a stepped carbon trading model is calculated from the free carbon trading quota model and the actual carbon emission model.Finally,a comprehensive energy system energy-saving optimization scheduling model considering the generalized electric heating demand response and the stepped carbon trading mechanism is established.The objective function is to minimize the total cost of the system,and the operating status and power balance of each equipment are constrained.Linearization transforms the mixed integer nonlinear model into a linear model for solution,and combines examples to verify the proposed model.The results show that the scheduling strategy based on the above model can effectively reduce the economic cost and carbon emission of the system.