班轮运输燃油补给决策与航速优化的经济环保双目标模型

Bi-objective Liner Refueling Strategy and Optimal Speed model for Simultaneously Minimizing Emission and Cost

为了解决航运企业既需要节约成本又需要低碳减排的问题,以燃油补给策略与航速为决策变量,建立了考虑经济与环保双目标的班轮运输燃油补给决策模型.在对目标进行标准化处理的基础上,采用加权和法将双目标优化问题转换为单目标优化问题,从而采用Lingo优化软件实现模型的求解,并采用权重调整策略得到了营运成本及碳排放的Pareto解集.以远东至北美的TPS班轮航线为例,求得了该问题的Pareto解集,以及对应的燃油补给策略与各航段的最优航速.结果表明建立的模型与设计的求解方法能够解决一定约束条件下航运企业营运成本与碳排放量均较好的双目标优化问题,帮助航运企业降低运输成本,提高运输利润及更好的面对行业低碳减排的发展趋势.

In order to solve that shipping companies need to reduce both cost and carbon emissions,establish a bi-objective liner refueling model for simultaneously minimizing emission and cost.Refuel strategy and speed are decision variables in the model.Employing the method of weight-added sum to convert the bi-objective optimization problem into a singleobjective on the basis of standardizing the objectives.So the model could be solved with the optimization software,and could obtain the Pareto set of operating costs and carbon emissions using the weight adjustment strategy.Taking the TPS liner route as an example,obtain the Pareto solution,refuel strategy and optimal speed.The results show that the model established and the solution method designed could solve the bi-objective optimization problem of shipping companies with better operating cost and carbon emissions under certain constraints.The research could be helpful for reducing costs and increasing profits,and better facing the development trend of low-carbon emission reduction.