Research On Low Carbon Economy Operation Of Integrated Energy System Based On Carbon Trading Mechanism

Due to the serious pollution of the world environment and the worsening problem of excessive energy development,countries all over the world are committed to changing the energy structure to strengthen the importance of new energy power generation.At the same time,the traditional optimal scheduling method in the integrated energy system only takes the economic operation cost as the objective function,which is not in line with the new development direction of low-carbon sustainable power grid.In order to reduce the environmental pollution caused by carbon emissions in the process of integrated energy system power generation,and improve the economic benefits of integrated energy system,this paper takes the electricity/gas/heat/cold cogeneration integrated energy system as the research object,establishes a typical integrated energy system model,and comprehensively considers the dual optimal adjustment of system economic operation and environmental protection under the influence of carbon trading market It’s a matter of degree.Firstly,the integrated energy system is divided into three parts: the energy supply side,the energy conversion storage side and the user demand side,and the operation characteristics and carbon emissions of the new energy generating unit in the energy supply side,the micro gas turbine,electric boiler,gas boiler,electric refrigerator,absorption refrigerator and energy storage equipment in the energy conversion storage side are analyzed The mathematical model of operation cost and maintenance cost of each unit is constructed.Secondly,the carbon trading market based on carbon trading mechanism is deeply studied.In order to improve the constraint weight of the initial carbon emission quota and carbon trading cost on the carbon emission of integrated energy system,this paper sets different carbon emission excess penalty intervals according to the excess carbon emission of the system,implements the gradient penalty price of carbon emission excess,and proposes an improved whale algorithm based on the reverse learning mechanism to improve the convergence accuracy and convergence rate of the conventional whale optimization algorithm to solve the problem By adjusting the output of each coordinated unit in the system,the total carbon emission excess of the integrated energy system is minimized while ensuring the load supply on the user demand side,and two scenarios without considering the carbon trading mechanism and considering the traditional carbon trading mechanism are set to verify the ladder type carbon trading machine The feasibility and effectiveness of the system to the low-carbon economic operation of the integrated energy system.Finally,in order to further improve the economic and environmental benefits of the integrated energy system,a life cycle analysis method is proposed to analyze the indirect impact of the electric energy storage equipment system on the total carbon emissions of the integrated energy system.Under the setting of step-by-step carbon trading mechanism,with the objective of minimizing the economic cost and total carbon emission of the integrated energy system,the optimal scheduling model of low-carbon economy for the integrated energy system of electricity/gas/heat/cold cogeneration considering the carbon emission of electric energy storage equipment is constructed,and the optimal scheduling model of low-carbon economy for the integrated energy system of electricity/gas/heat/cold cogeneration excluding electric energy storage equipment is set for comparison Analysis,verify its economy and feasibility.