| Compared with conventional energy sources,solar energy and wind energy and other renewable energy intermittent and unstable shortcomings lead to its power grid difficulties.At the same time there are power grid peak and electricity trough,if using some adjustment system to adjust the power consumption of the grid,will inevitably lead to part of the boiler and turbine charge generation and result in low efficiency.Energy storage system can make up for the intermittence and instability of the renewable energy power generation.The energy storage system is used to generate electricity during the peak period,and the energy is stored when the power consumption is low.Because of the unit capacity,energy density,system efficiency,output power,energy storage cycle,cycle time,operation costs,environmental factors,Compressed air energy storage systems have been commercialized on a large scale.Based on the research results of compressed air energy storage at home and ab road,this paper takes TICC-500 and 1.5MW demonstration power station of Chinese Academy of Sciences as the research object.Based on energy,mass conservation equation,fluid-mechanics,heat transfer,engineering thermodynamics and other relevant professional knowledge,Combining with working and flow factors of various working fluid and modularization method,this paper studies the performance of advanced adiabatic compressed air energy storage system,such as compressor,heat exchanger,header,gas tank,turbine of the mathematical model;the corresponding algorithm is programmed by C program.Corresponding simulation module is established on STAR-90 simulation supporting system platform.Based on the existing equipment /components,the dynamic simulation model of advanced adiabatic compressed air storage power plant thermal power system with certain commonality is developed based on the model,the dynamic characteristics of thermal power system.The static accuracy and dynamic characteristics of the simulation model are verified by literature data and curves.Based on the simulation model,the dynamic characteristics of advanced adiabatic compressed air storage power station are analyzed.The verification of the simulation model and the analysis of the dynamic characteristics of the power station show that the simulation model can accurately reflect the operation process of the unit and the dynamic characteristics of the unit thermal system.The main thermal parameters are consistent with the unit operation mechanism and thermal regulation process,and can meet the simulation real-time requirements.The simulation model is stable,reliable and has good self-stability.Simulation model can be used for real-time simulation of the development of such units and operating characteristics of the study,but also for the unit control system design and analysis to provide a good nonlinear object model. |
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