基于数学规划法的蒸汽动力系统优化运行研究

Study on optimization of steam power system based on mathematical program

为满足石油化工行业实际生产中各单元、各工艺过程对不同等级蒸汽的需求,将不同蒸汽动力循环过程归纳综合为一种通用的过程,并利用数学规划的方法建立了数学模型。采用数学规划法对实际操作系统进行优化,得到最佳操作参数,并与人工调度方案进行了比较。结果表明:对于复杂蒸汽动力系统的优化,借助优化模型和求解软件可以方便地确定系统最优运行状态,使整个蒸汽动力系统的运行费用最低。该方法可为过程动力、热能、工艺蒸汽等的分配提供参考数据,对实际蒸汽动力系统的优化改造有着重要的指导意义。

In order to meet the demand of different grade steam in different units and technical process of petrochemical production,the different steam power circulations are concluded to a universal process,and the mathematical model is established by mathematical program. The practical operation system is optimized by mathematical program and the optimum operation parameters are obtained,which is compared with the scheme of artificial scheduling. The results show that for the optimization of complex steam power system,the optimum operation is simple to determine by means of optimized model and solving software to realize the low operation cost of the steam power system. The method of mathematical program can provide reference to the distribution of process power,heat energy and technical steam,which has important instructional effect to optimization and improvement of practical steam power system.