Optimal Scheduling Of Integrated Energy System Considering The Uncertainty Of User Psychological Factors

By combining with various renewable energy systems,integrated energy systems can achieve large-scale utilization of clean energy and coordinated operation of different types of energy,which is an effective way to reduce the dependence on traditional fossil energy,improve the reliability and stability of energy systems,and reduce energy consumption.At the same time,the diversity of load types in integrated energy systems also brings great applied potential for demand response,however,most existing demand response studies do not consider the influence of user psychological factors.In addition,the large scale access of clean energy,the diversity of load types and the difficult prediction of user behavior have aggravated the uncertainties in the integrated energy system and brought great challenges to its economic and stable operation.To address these problems,this paper investigates the optimal operation of integrated energy systems from two aspects:demand response and source-load dual uncertainty,aiming to fully coordinate source-grid-load resources and improve the economy,environmental friendliness and reliability of integrated energy system operation.First,clean energy sources such as wind power and photovoltaic are introduced,and an integrated energy system containing electricity,heat and cold loads is constructed from three aspects:energy supply layer,energy conversion layer and energy demand layer.The coupling relationship of various energies in the system is analyzed,and the corresponding mathematical model is established according to the operating characteristics of each energy conversion equipment in the system.Then,in order to fully mobilize the flexible load resources and solve the source-load imbalance problem in the integrated energy system,the price-based and incentive-based integrated demand response schemes are established for the different response characteristics of time-elastic load and interruptible load in the integrated energy system,respectively.Considering that in addition to economic factors,user psychological factors also largely influence user energy use behavior,the endowment effect and environmental awareness are introduced to describe the influence of user psychological factors on the positivity of demand response.Taking into account the operating characteristics of the integrated energy system and the participation of demand response,the economic optimal scheduling of the integrated energy system is carried out,and the influence of user psychological factors on the participation of demand response as well as the economical and environmental protection of the integrated energy system operation is studied.Finally,a robust optimal dispatching model considering uncertainties of wind power,PV,load and user psychological factors is developed for various uncertainties in the operation of integrated energy systems.The effectiveness of the proposed robust optimal scheduling model for integrated energy systems is demonstrated by combining with arithmetic examples.Compared with the traditional optimization methods,with the consideration of system balancing cost,the optimization method of integrated energy system considering source-load uncertainty can not only reduce the actual operating cost of integrated energy system and improve the robustness of the scheduling scheme of the system,but also the uncertainty parameter can effectively improve the flexibility of optimal scheduling of integrated energy system.