Research On Collaborative Optimization Of Multi-park Integrated Energy System

In recent years,the energy crisis and environmental degradation have severely restricted the coordinated development of my country’s economy,energy and environment.It is urgent to build a safe,efficient,clean and low-carbon energy system structure.The emergence of the integrated energy system is a breakthrough in the traditional energy system.It integrates electricity,heat,cold,gas and other energy sources in a unified manner and centrally dispatches them to realize the complementarity between fossil energy,renewable energy and other energy sources,as well as energy cascade utilization.It is one of the development directions of the future energy system.The park-level integrated energy system is one of the main forms of the integrated energy system.The research on the structure of the park system,equipment composition and dispatching operation is the basis for the study of the integrated energy system,which is of great significance for promoting the transformation of the energy structure and establishing the future energy system.First,the integrated energy system is outlined based on the current research status,and the overall energy supply framework of the park-level integrated energy system is proposed in this paper.And established a mathematical model of the energy supply equipment and auxiliary energy supply equipment in the park-level integrated energy system.It mainly includes the mathematical models of combined cooling,heating and power equipment,gas boilers,electric refrigerators,wind turbines,photovoltaic equipment,and energy storage units,and restricts the output and climbing of each equipment,and analyzes the optimal operation of the park for the subsequent chapters Provide theoretical support.Secondly,a framework structure of park optimization scheduling ba sed on external energy information and internal load structure is proposed,and a park economic scheduling model is established from the perspective of park operators.Based on the analysis of the traditional power demand response,a comprehensive demand response mathematical model including vertical and horizontal response channels is proposed.In order to describe the user’s energy use experience more accurately,the user’s energy payment model and energy use dissatisfaction model are established,and the fuzzy algorithm is used to normalize the energy use comprehensive income index model.It is proposed that the user’s energy use comprehensive income index is the highest Integrated demand response strategy for the goal.Due to the contradiction between the park operator and user revenue model in the optimization process,the game theory is introduced to construct the park operator-user master-slave game model,and the existence and uniqueness of the game equilibrium solution are given.Proof of sex.Finally,on the basis of the above consideration of the optimal scheduling strategy for comprehensive demand response within the park,an operation mode for coordinated and optimized operation of the energy service station radiating the surrounding park is proposed,and the storage unit model,revenue model and constraint conditions of the energy service station are established.At the same time,in order to solve the situation that the intelligent algorithm is easy to fall into the local optimal solution,a chaotic particle swarm solution algorithm is designed by combining the chaos idea with the algorithm.Construct four sets of simulation scenarios to analyze the output of the equipment in the park,the improvement of the load curve,and the economics of operation.The results show that the comprehensive demand response model proposed in the article can effectively reduce the peak-to-valley load difference,reduce user payment costs,and improve the comprehensive income index of energy use.The energy service st ation coordinates the optimal operation of the park and has significant effects in improving the flexibility of system scheduling and reducing the operating cost of the park.