A hierarchical scheduling approach is presented by a simplified scheduling model of refinery crude system with both reduced problem scale and length of solving time.

提出了操作活动聚合的递阶排产法，简化了原油系统排产模型，并大幅度地降低了模型的求解时间。

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For the flexible scheduling problem of complex single product, a new hierarchical scheduling algorithm is presented based on improved processing operation tree model.

对复杂单产品柔性调度问题，本文在改进加工工艺树模型的基础上，提出一种新的分步式求解算法。

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