Optimization Of The Operation Strategy Of CCHP System With Complementary Wind And Solar Energy

With the extensive use of fossil energy,the development of distributed energy supply system and green energy has become an effective method to solve energy and environmental problems.CCHP system has the advantages of high energy efficiency and less pollution.However,In the traditional CCHP system structure,the energy input and output form is single,the green energy is not utilized;in the operation strategy,there is a phenomenon of energy waste in the traditional operation strategy.In this paper,the structure and operation strategy of the CCHP system are optimized,it makes comprehensive reference target of the optimization target to achieve the optimal results.The main contents of this paper are as follows:(1)On the basis of the traditional CCHP system,solar energy and wind energy are added to increase the diversity of energy input of the system.At the same time,the electric refrigerator is added to facilitate the flexible adjustment of the energy output form of the system.The structure of the CCHP system with complementary wind and solar energy is designed,and the working principle of the system is studied.(2)In the aspect of system operation strategy,a comprehensive index including energy,environment and economy is established,which can be used as the standard to measure the advantages and disadvantages of the operational strategy.This paper optimizes the two traditional operation strategies of " following the thermal load " and " following the electric load ".this makes the two operation strategies suitable for the CCHP system with complementary wind and solar energy,and the optimal comprehensive index of the two operation strategies is solved by genetic algorithm.(3)In order to further improve the efficiency of energy utilization,an optimal operation strategy based on matrix modeling is proposed,and the optimization model of matrix modeling operation strategy is established,the sequential quadratic programming algorithm is used to solve the optimization model,in this way,the optimal synthetic index of matrix modeling strategy is obtained.(4)The three system operation strategies are simulated and verified by Matlab,and the comprehensive indexes of the three operation strategies at different times are obtained,through comparative analysis of the comprehensive indicators,it is verified that the operation strategy based on matrix modeling has more advantages than the traditional operation strategy in terms of primary energy saving,operation cost reduction and carbon dioxide emission reduction.The results of this paper show that the integrated performance of CCHP system with complementary wind and solar energy structure and the operation strategy of matrix modeling are superior to those of the traditional system structure and operation strategy in energy,environment and economy.It provides a reference for the research of the CCHP system.