cycle based simulator

The dummy period method is applied to control the quality of crude inventory in the last period.

采用PIMS软件中的多周期混合整数规划技术建立炼油企业购油计划模型,使优化结果与实际购油方式相吻合;采用虚拟周期方法解决原油期末库存质量控制问题;采用滚动处理方式解决炼厂月、季原油选购计划的衔接和全局优化问题。