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化工学报  2013 

锅炉循环清洗调度问题优化

DOI: 10.3969/j.issn.0438-1157.2013.12.037, PP. 4515-4521

Keywords: 锅炉循环清洗调度,最速下降近似线性规划,非线性规划,线性约束

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Abstract:

多操作周期的锅炉蒸汽系统是一个性能随时间衰减的混合整数非线性规划问题,其目标函数由燃煤量和锅炉清洗维护的费用构成。针对此类非线性问题,提出了最速下降近似线性规划(SDALP)的算法,利用最快速下降的目的性搜索思想,引入移入、移出向量和积极富裕量,通过对调整变量边界的判断条件和途径进行了新的定义,排除了传统近似线性规划方法中主观选择初始可行解、步长限制量以及缩小系数等变量可能导致的将最优解排除在变量边界之外的问题。将该算法应用于锅炉蒸汽系统循环清洗调度问题,实验结果表明,SDALP算法解出的调度方案优于原电厂调度方案,节能效果明显。

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