考虑市场竞争条件的管输天然气供应链优化

天然气作为一种清洁、绿色的能源,在全球能源消费结构中占比越来越重。目前,虽然已有大量关于天然气供应链优化的研究,但多集中于单一供应方的最优需求分配,对多方竞争市场下的天然气供应链优化研究鲜有报道。针对两供应方竞争同一市场,以两方所获总利润最大为目标函数,考虑供需平衡约束、管道建设约束、站场建设约束以及储气库建设约束等,对两方分别建立混合整数二次规划(Mixed Integer Quadratic Programming,MIQP)模型以及混合整数线性规划(Mixed Integer Linear Programming,MILP)模型,并结合粒子群(Particle Swarm Optimization,PSO)算法对模型进行求解。将模型应用于某一沿海地区的天然气供应链系统,求解得到各供应方的供气方案和建设方案。计算结果表明:该模型具有一定的适用性,模型求解的稳定性较好。研究成果对于考虑市场竞争的天然气供应链优化、保障天然气资源供应的经济性和稳定性具有指导意义。

Optimization of pipeline natural gas supply chain considering marketcompetition

As a kind of clean and green energy,natural gas accounts for an increasing proportion in global energy consumption structure.So far,a large number of studies were carried out on the optimization of natural gas supply chain,but most of them focused on the optimal demand allocation of single supplier,while few study was conducted on the optimization of natural gas supply chain in multi-competitive market.For the competition between two suppliers for the same market,the maximum profit of the two suppliers was taken as the objective function,and with consideration to the constraints of balance between supply and demand,as well as the construction of pipeline,station and gas storage,the mixed integer quadratic programming(MIQP)model and the mixed integer linear programming(MILP)model were respectively developed for the two suppliers,which were solved through particle swarm optimization(PSO)algorithm.Additionally,by applying the models to a natural gas supply chain system in the coastal region of China,the gas supply scheme and construction scheme of each supplier were worked out.The calculation results show the applicability of the model and the good stability of its solution,and the research findings are of guiding significance for optimizing the natural gas supply chain with the market competition considered and ensuring the economy and stability of natural gas supply.