| People’s increasing demand for energy is accompanied by increasing pollution emissions.With the announcement of the "two-carbon" goal,the concept of environmental protection has become more popular.Integrated energy system can realize the integration of fossil energy and renewable energy resources in the region,achieve efficient use of energy,reduce environmental pollution and ensure the needs of users with high quality energy,not only effectively solve our energy problems of poor coal,oil and gas,and can speed up the realization of the "double carbon" goal.This paper studies the optimization scheduling and comprehensive evaluation of the integrated energy system,aiming at providing theoretical guidance for the optimization and evaluation of the integrated energy system.The main research contents of this paper are as follows:The theoretical knowledge of integrated energy system is studied and analyzed.Starting from the nature of the comprehensive energy system,the advantages of the comprehensive energy system are summarized based on five points:flexibility,safety and reliability,economy,low carbon and environmental protection,and high efficiency,and the main operating equipment in the comprehensive energy system is modeled,the operating mechanism of the equipment is analyzed,and the theoretical reference is provided for subsequent optimization.The optimal scheduling model of integrated energy system in service area is proposed.Firstly,the infrastructure of the integrated energy system in the service area was established,and the energy hub matrix modeling method was used to divide the integrated energy system into three sub-modules:supply side,conversion side and demand side.Secondly,the system optimization scheduling model was established with the optimal economy of the system as the objective function,and the equipment capacity,climb rate,output upper and lower limits,and energy balance equations as the operation constraints.The model was known to be a mixed integer nonlinear programming problem,and the Ipopt solver under the MATLAB platform was used to solve the model.Finally,different energy system configuration schemes are optimized and compared,and the main differences between the comparison schemes are whether the system configuration equipment has energy storage equipment,power to gas equipment,cogeneration equipment,etc.The calculation results show that the system structure scheme built in this paper is the optimal scheme,and economically,it can achieve peak cutting and valley filling within the cycle of operating costs.Establish a comprehensive evaluation system for the comprehensive energy system in the service area.First of all,starting from efficiency,economy,environmental protection,reliability and industry,the evaluation index system of comprehensive energy system in the service area is constructed by combining the inherent characteristics of the service area and considering the consumption of new energy.Secondly,the AHP-entropy weight method-CRITIC method combined subjective and objective weight method is adopted as the weight determination method of indicator system.Then,an improved adversarial interpretative structure model based on TOPSIS is constructed as an evaluation model of integrated energy system approach in the service area.Finally,an example study of the comprehensive evaluation model of the comprehensive energy system in the service area is carried out.Through the evaluation and analysis of seven different system equipment configuration schemes,the advantages and disadvantages of different energy systems are ranked.The results show that the system structure scheme built in this paper is the optimal scheme. |
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