Research On Economic Dispatching Method Of Regional Integrated Energy System Based On Ranking Optimization Algorithm

With the development of economy and society,energy crisis and environmental pollution have become urgent problems for the society to solve.People’s demand for energy is increasing day by day,and the existing energy production and consumption methods can no longer fully meet the development needs of human society.The integrated energy system can couple fossil energy and various renewable energy sources,realize the coordinated optimization and comprehensive utilization of various energy sources,and is an effective way to promote energy conservation,emission reduction,green and sustainable development,and improve the current environment and energy crisis.A variety of energy sources are brought together in an integrated energy system,and there are complex connections between various energy equipment.How to reasonably optimize and dispatch the system to make the system run stably and reduce the operating cost has important research value for the promotion and application of the integrated energy system.The specific research contents of this paper are as follows:1.Mathematical model of each equipment in integrated energy system is given.Firstly,the energy hub model of the integrated energy system is established,and its internal composition and energy flow are introduced in detail.After that,the mathematical models of new energy power generation equipment such as photovoltaic cells,wind turbines,fuel cells,ground source heat pumps,combined cooling,heating and power systems,and electricity and thermal energy storage devices in the integrated energy system are given.It lays the foundation for the establishment of the economic dispatch model of the integrated energy system.2.An integrated energy system economic dispatch model based on Rank Pair Learning Crisscross Optimization algorithm is established.Under the grid-connected condition,a comprehensive energy system economic dispatch model with the lowest total system operating cost as the objective function is established.The influence of ground source heat pump and energy storage device on the operation of integrated energy system is analyzed.A Rank Pair Learning Crisscross Optimization algorithm is proposed to solve the objective function,and the methods of penalty function and boundary absorption are used to deal with various constraints.In order to verify the superiority of the proposed algorithm,the sorting and cross-optimization algorithm is used to solve the above optimal scheduling model.And compared with the other four optimization algorithms,it is concluded that this algorithm has better solution effect.3.An economic dispatch model of island integrated energy system is established.In order to improve the stability and economy of the system,the system can cut off the load operation when the energy is difficult to meet the balance.An economic dispatch model of the integrated energy system in the isolated island area considering the comprehensive demand response strategy of the cooling,heating and electric loads is established.The grouping algorithm solves the model.In order to analyze the impact of the comprehensive demand response strategy on the operation of the regional integrated energy system,the proposed comprehensive demand response strategy and the demand response strategy without considering the demand response strategy and the demand response strategy considering the electric load are compared and simulated in this paper.The experimental results show that the unit output of the regional integrated energy system considering the integrated demand response strategy is more flexible and the operating cost is lower,indicating that the integrated demand response strategy can improve the stability and economy of the system operation.