The Operation And Capacity Optimization Of Integrated Energy System

People already have started to think about that patterns on existing energy consumption,under the dual pressure of the energy crisis and environmental pollution.It is still a puzzle that countries in the world need to solve urgently about how to reduce the pollution of the environment while the energy is continuously supplied.Nowaday,the research on integrated energy systems mainly focuses on system operation optimization,equipment capacity configuration,and pipeline energy transmission and distribution,etc.And there are few studies on the coupling between the three.Based on the existing research,this paper co uples the operation scheduling,equipment capacity configuration and energy transmission of the integrated energy system.Under the precondition of satisfying the customer’s need of cold,heat,and electrical loads,the essay takes them as the objective function which the initial system investment and total operation cost,research the operation and capacity optimization of the integrated energy system,providing relevant ideas about how to design and operate for the system of integrated energy system.The main contents and results are as follows:Firstly,establish an integrated energy system operation scheduling model,perform energy simulation and optimized scheduling analysis on an integrated energy system including a composite heat and cold storage devi ce,and propose a method for coupling dynamic programming and improved particle swarm optimization.Simulation and comparative analysis of systems containing different energy storage conditions,and the normalization function processing method is used to e xplore the influence of cold,heat,electricity load and hourly electricity price on the hourly energy release during the energy dispatching process.The result shows that it has a critical impact on the operation cost of the integrated energy system of the scheduling of energy storage devices and their charging and discharging.The operating costs of simulated working conditions 3 and 2 are reduced by 14.65% and 5.92% compared to working condition 1 respectively.In the process of scheduling while releasing energy,the hourly energy release is affected by the cold,heat,electric load,and electricity price changes anytime.The effect of the electric load on the hourly energy release is higher than the other three parameters,and the effects is significant that reduces system operating cost.Secondly,the project of Jinghu New District in Shaoxing City as a background to establish that model of an equipment capacity optimization.Under the precondition of satisfying the requirements about user load,we use that as the objective function which the initial investment and total operation cost of the system,to optimize the capacity of the energy supply equipment in the energy station.The results show that the established numerical model has high accuracy.After the equipment capacity has optimized,the proportion of the total cost reduction increases with the increase of the service life.when the service life is 6-20 years,the overall Percentage reduction in total system cost after optimization(SS)increases with the increase of the capacity storage capacity N Large,increasing first and then decreasing.When the service life is 6-10 years,12-14 years and 15-20 years,the optimal capacity of the energy storage device accounts for 40%,50% and 60% of the most unfavorable typical daily load,respectively.Finally,the typical daily load in summer and winter as input parameters which the Project of Jinghu New Area Planning.Establishing pipe network thermal dynamic model and generation-gird-load coupling model.Dynamically couple energy supply,distribution and users,and the network thermal dynamic model is verified.On the basis of the above research,the output status of the equipment,the daily operating costs and the pipe network energy transmission were simu lated in Energy Station 1.The simulation result shows that it has greatly high accuracy about established network model and numerical solution method.Under the daily typical situation in winter,the daily operation cost of the energy station after optimi zation is reduced by8.7% compared with that before the optimization.in typical summer days,the daily operation cost of the energy station after optimization is reduced by 27.1% compared with the before optimization.The typical daily operation cost in winter after optimization is less than in summer,because of the equipment efficiency,energy prices and energy storage device input.The use of the integrated energy system is of great significance to solve the current problem of clean energy consumption,and to promote the transition of China’s energy strategy to clean low-carbon and diversified and comprehensive international cooperation.The research provides that a reference for integrated energy system of planning,designing,optimal operation,and energy transmission and distribution.