Study On The Analysis And Optimization Of An Airline Route Network From The Perspective Of Carbon Peak

With the rapid development of air transport industry,aviation carbon emissions have increased sharply.In the current energy crisis,a series of crises caused by excessive carbon emissions make people gradually realize the importance of "energy conservation and emission reduction",and the dual-carbon concept came into being.How to achieve the goal of energy conservation and emission reduction of the aviation industry,realize the transformation of the aviation economic development model,and put the aviation industry on the path of sustainable development,the key is how to balance the relationship between the development of air transport and carbon reduction and emission reduction.Therefore,based on the research of route network optimization,this article establishes an airline network optimization model with the goal of maximizing the profit of the airline network and minimizing the carbon emission index,in order to achieve the new development goal of aviation carbon emission reduction on the basis of achieving the goal of economic efficiency improvement.Firstly,the structure and performance stability of the airline network are analyzed and studied by using the complex network theory,which lays the foundation for the subsequent optimization research.Then,by using the theory of multi-objective optimization,a multi-objective optimization model with the goal of maximizing the profit of the airline network and minimizing the carbon emission index is established to carry out the research on the optimization of the airline network.The main research content of this article involves the following aspects:Aiming at the structural characteristics and robustness analysis of a certain airline’s airline network before and after the epidemic,network analysis was conducted on the airline’s airline network during the seven flight seasons before and after the epidemic using topological structure indicators of complex network.The results show that there are fluctuations in the evaluation results of the single layer network,which is not conducive to the overall performance analysis of the airline network under a certain period of time.Therefore,it is considered to use temporal network theory to evaluate the topological structure of the airline network by constructing a temporal model of the airline network,using temporal network characteristic indicators,and using two types of attack strategies,deliberate attack and random attack,to evaluate the robustness of the airline network.The research results show that temporal indicators can better reflect the dynamic change process of the airline network than static indicators.In addition,Chengdu and Lhasa have always been the hub nodes of an airline’s airline network.Secondly,comparing attack strategies,it is found that carbon dioxide sequencing attacks are more targeted against network attacks than the other two deliberate attack strategies,and can identify important edges of the network.Aiming at the problem of multi-objective optimization of airline network,By considering the influence of the construction of carbon emission factors,a multi-objective aircraft assignment optimization model based on the improved NSGA-Ⅱ algorithm is proposed to maximize flight profit and minimize carbon dioxide emissions.The optimization results show that compared with the original scheme,the flight profit and carbon dioxide emissions of the optimized scheme have increased and decreased by 12.27% and 8.19%respectively,thus achieving a win-win situation of economy and environmental protection.At the same time,through the comparative analysis of the carbon emission weight airline network before and after the optimization,it can be seen that the weight of the edge weight and the airport node weight of the optimized route network have changed to varying degrees,and the carbon emissions involved in the routes and airports ranking the top of the edge weight and airport weight are generally reduced,and in general,the optimization of the carbon emission indicators has been achieved,achieving the goal of energy conservation and emission reduction.On the other hand,it has optimized the aircraft type structure layout of the airline network,further improving the operational stability and reliability of the airline network.