Two-Stage Mathematical Programming Approach for Steelmaking Process Scheduling Under Variable Electricity Price  

作　　者：TAN Yuan-yuan HUANG Ying-lei LIU Shi-xin 

机构地区：[1]College of Information Science and Engineering, Northeastern University [2]State Key Laboratory of Synthetical Automation for Process Industries [3]Enterprise Solution Business Group, Shanghai Baosight Software Limited Company

出　　处：《Journal of Iron and Steel Research International》2013年第7期1-8,共8页

基　　金：Item Sponsored by National Natural Science Foundation of China (71171038,71021061 );Fundamental Research Funds for Central Universities of China (N100504001)

摘　　要：The steelmaking process scheduling problem by considering variable electricity price （SMSPVEP） was in- vestigated. A decomposition approach was proposed for the SMSPVEP. At the first stage, mathematical program-ming was utilized to minimize the maximum completion time for each cast without considering variable electricity price. At the second stage, based on obtained relative schedules of all casts, a mathematical model was formulated with an objective of minimizing the energy cost for all casts scheduling problem. The two-stage models were tested on randomly generated instances based on the practical process in a Chinese steelmaking plant. Computational results demonstrate the effectiveness of the proposed approach.The steelmaking process scheduling problem by considering variable electricity price （SMSPVEP） was in- vestigated. A decomposition approach was proposed for the SMSPVEP. At the first stage, mathematical program-ming was utilized to minimize the maximum completion time for each cast without considering variable electricity price. At the second stage, based on obtained relative schedules of all casts, a mathematical model was formulated with an objective of minimizing the energy cost for all casts scheduling problem. The two-stage models were tested on randomly generated instances based on the practical process in a Chinese steelmaking plant. Computational results demonstrate the effectiveness of the proposed approach.

关 键 词：steelmaking process SCHEDULING variable electricity price mathematical programming 

分 类 号：TF703[冶金工程—钢铁冶金]