Research On Operation Optimization Of Regional Integrated Energy System Considering Demand Response

Due to the shortage of energy and the problem of environmental protection,all parties are actively looking for more efficient energy use and environmentally friendly renewable energy.Under the background of current low-carbon development,the establishment of an integrated energy system as an effective scheme can effectively solve the problems existing in the operation of China’s energy system,such as low utilization rate of equipment,inadequate utilization of energy,poor self-healing ability of the system and so on.At the same time,with the further practice of demand response,the combination of demand response and comprehensive energy for joint optimization has become a key means to alleviate the peak load pressure and slow down the construction of energy facilities.Therefore,it is necessary to study the application of demand response resources and demand response strategy in the integrated energy system,and construct the response strategy and operation optimization method of the integrated energy system to ensure the economic and efficient operation of the integrated energy system.The research content of this paper mainly includes the following four parts.Part1,the theory of demand response and integrated energy system optimization is analyzed.Firstly,the types of demand response are divided and three response strategies are analyzed in detail.Secondly,a universal demand response model is established for price-based and incentive demand response.Finally,the pain points in the implementation of the current integrated energy system operation optimization and the optimization algorithms applied to the integrated energy system operation optimization are analyzed.Part2,the characteristics of regional comprehensive energy system are analyzed and the mathematical model of typical equipment is established.Firstly,the connotation of the current integrated energy system is analyzed.Secondly,according to the characteristics of the integrated energy system,the mathematical model of the typical equipment in the regional integrated energy system is established.Part3,the operation optimization model of regional integrated energy system considering demand response is constructed.Firstly,the structure of the park integrated energy system is determined according to the resource conditions and load conditions,and the real-time electricity price demand response model is constructed based on the time-of-use electricity price and price load elasticity relationship.Secondly,the operation optimization model of the comprehensive energy system considering the demand response is established by taking the economy and carbon emissions as the objective function.Finally,the variables and their types in the model are identified and analyzed to determine the optimization algorithm and solution process.Part4,the simulation results of regional integrated energy system operation optimization based on demand response are analyzed.According to the real-time electricity price demand response model and the multi-objective optimization model of regional integrated energy system established in this paper,the simulation analysis is carried out under the two schemes of demand response participating in optimal operation and not participating in optimal operation.The differences of system load response and operation status under the two modes are analyzed,and the sensitivity analysis of some indexes is carried out.