Research On Optimization Of Multi-energy Complementary Distributed Energy System

Since the 21st century,the transitional use of fossil energy,such as coal and oil,has not only created rich material life,but also caused a lot of pollution emissions and energy waste.In recent years,distributed energy systems,which are one of the important directions of energy development,have received widespread attention.However,due to the problems of equipment capacity design mismatch and single source of energy in distributed energy systems,the development of distributed energy systems is limited to some extent.Therefore,it is of great engineering value and practical significance to optimize the equipment capacity of distributed energy systems with new energy sources.In order to achieve energy saving and emission reduction and improve energy efficiency,it was designed that the multi-energy complementary distributed energy system integrated fan,PV and distributed energy system.Established mathematical models for photovoltaic power generation,wind power generation,gas turbines,etc,putting the separation production as reference objects,considering the influence of the output of wind,light on the system and the influence of the cost of electricity purchase and the supplement of PV power to the economy,a comprehensive operation index composed of annual energy saving rate,annual total cost saving rate and annual greenhouse gas emission reduction rate was constructed.In this paper,an optimal operation strategy of gas turbines considering wind and solar power output is proposed,which is based on particle swarm optimization-genetic algorithm?PSO-GA?,and the gas turbine capacity,electric refrigeration ratio,fan and PV capacity of the energy system are optimized.Finally,multi-energy complementary distributed energy system optimization model based on comprehensive operational indicators,taking the Taixing Hongqiao Industrial Park in Jiangsu Province as an example,the system configuration scheme under the optimal comprehensive operation index is obtained.We can see that:The multi-energy complementary distributed energy system operates on the principle of optimal operation strategy,compared with the other two modes of operation,the annual energy consumption and annual CO₂ emissions of the system can be effectively reduced,and the advantages of energy saving and emission reduction are obvious,and the system integration can be improved.The hybrid algorithm can avoid falling into local optimum and achieve better integrated operation indicator value.