基于生产-能源协同的钢铁企业能源系统双层鲁棒优化  

Production-energy cooperation based two-layer robust optimization for energy system of steel enterprise

作　　者：韩中洋 王志远 赵珺[1,2] 王伟[1,2] HAN ZhongYang;WANG ZhiYuan;ZHAO Jun;WANG Wei(Key Laboratory of Intelligent Control and Optimization for Industrial Equipment,Ministry of Education,Dalian University of Technology,Dalian 116024,China;School of Control Science and Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学控制科学与工程学院,大连116024 [2]大连理工大学工业装备智能控制与优化教育部重点实验室,大连116024

出　　处：《中国科学：技术科学》2024年第9期1763-1777,共15页Scientia Sinica(Technologica)

基　　金：国家自然科学基金项目(批准号:61833003,62125302,U1908218)资助。

摘　　要：钢铁产品生产与煤气、蒸汽、电力等能源密切相关,因而上述多能流协作及其与生产过程的协同是钢铁企业实现节能降耗的关键.现有文献通常基于能源产消量的预测实现动态闭环优化,然而因生产频繁波动造成的预测不确定性也为后续运行优化工作带来挑战.本文提出一种基于生产-能源协同的钢铁企业能源系统双层优化方法.该方法首先考虑分时电价建立上层热轧生产计划排产优化模型;进而以运行成本最低为目标、联合热电联产(combined heat and power,CHP)机组等能源耦合设备可行空间等约束,建立下层能源系统运行优化模型;为应对能源产消预测结果的不确定性,本文提出一种改进的弱鲁棒优化方法进行求解,从而最终获得经济最优的能源系统运行方案.本文基于中国某钢铁企业能源系统真实数据进行实验分析,通过分别与不考虑生产协同关系、忽视预测不确定性及不计入CHP机组可行空间等其他求解方法的对比,说明了协同优化对能源系统运行带来的经济性提升和自身鲁棒性优势.Iron and steel production is closely related to energy media,such as gas,steam,and electricity,so that the related collaboration as well as their cooperation with the production plays a pivotal role in energy saving and emission reduction.The existing studies typically implement real-time optimization in closed-loop with prediction,whereas the subsequent uncertainty brings further challenge for this work.As such,a production-energy cooperation based two-lay optimization method is proposed in this study.It starts with the modeling for production planning considering time-of-use electricity price in the upper layer.Then taking economic cost as the objective and feasible region for equipment such as Combined Heat and Power(CHP)as the constraints,the model for real-time optimization of energy system is established in the lower layer.In order to deal with the uncertainty problem,an improved light robust optimization algorithm is designed in this study,so as to obtain the final running scheme for the energy system.Based on the real data of a steel enterprise in China,simulations are conducted to compare with the solution without the consideration of cooperative relationship,prediction uncertainty and feasible region of the CHP,aiming at verifying the benefit for economic cost reduction and the superiority of robustness for the proposed method.

关 键 词：钢铁企业 能源系统 协同优化 鲁棒优化 

分 类 号：TF089[冶金工程—冶金物理化学] F426.31[经济管理—产业经济]