Production Scheduling of a Large-Scale Steelmaking Continuous Casting Process via Unit-Specific Event-Based Continuous-Time Models: Short-Term and Medium-Term Scheduling

2012 ◽  
Vol 51 (21) ◽  
pp. 7300-7319 ◽  
Author(s):  
Jie Li ◽  
Xin Xiao ◽  
Qiuhua Tang ◽  
Christodoulos A. Floudas
Keyword(s):  
Continuous Casting ◽  
Continuous Time ◽  
Production Scheduling ◽  
Large Scale ◽  
Casting Process ◽  
Medium Term ◽  
Continuous Casting Process ◽  
Short Term ◽  
Specific Event ◽  
Event Based

scholarly journals Unit-Specific Event-Based and Slot-Based Hybrid Model Framework with Hierarchical Structure for Short-Term Scheduling

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Yue Wang ◽  
Hongye Su ◽  
Hanshan Shao ◽  
Lei Xie
Keyword(s):  
Hybrid Model ◽  
Hierarchical Structure ◽  
Continuous Time ◽  
Production Scheduling ◽  
Lower Layer ◽  
Short Term ◽  
Model Framework ◽  
Time Model ◽  
Specific Event ◽  
Event Based

Unit-specific event-based continuous-time model has inaccurate calculation problems in involving resource constraints, due to the heterogeneous locations of the event points for different units. In order to address this limitation, a continuous-time unit-specific event-based and slot-based hybrid model framework with hierarchical structure is proposed in this work. A unit-specific event-based model without utility constraints is formulated in upper layer, and a slot-based model is introduced in lower layer. In the hierarchical structure, the two layers jointly address the short-term production scheduling problem of batch plants under utility consideration. The key features of this work include the following: (a) eliminating overstrict constraints on utility resources, (b) solving multiple counting problems, and (c) considering duration time of event points in calculating utility utilization level. The effectiveness and advantages of proposed model are illustrated through two benchmark examples from the literatures.

scholarly journals Fine Description of Multi-Process Operation Behavior in Steelmaking-Continuous Casting Process by a Simulation Model with Crane Non-Collision Constraint

Metals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1078 ◽  
Author(s):  
Yang ◽  
Zhang ◽  
Guan ◽  
Hong ◽  
Gao ◽  
...  
Keyword(s):  
Continuous Casting ◽  
Simulation Model ◽  
Production Scheduling ◽  
Casting Process ◽  
Simulation Software ◽  
Continuous Casting Process ◽  
Proposed Model ◽  
Dynamic Simulation Model ◽  
Process Operation ◽  
Plant Simulation

The fine description of multi-process operation behavior in steelmaking-continuous casting process is an important foundation for the improvement of production scheduling in steel plants. With sufficient consideration on non-collision movements among cranes, a dynamic simulation model is established by Plant Simulation software to describe the operation behavior of multi-process in the steelmaking-continuous casting process of lacking refining span. The design and implement of simulation are illustrated based on a typical workshop layout of “one converter-one refining furnace-one caster”. The method to avoid the collisions between adjacent cranes is represented in detail. To validate the availability of this model, an actual steel plant without refining span is studied, and simulation experiments are conducted by introducing actual production plans as simulation instances. The simulated findings agree well with the actual results of interest, including the total completed times of simulation instances, the turnover number of ladles, and the transfer times of heats among different processes. Hence, the proposed model can reliably simulate the multi-process operation behavior in steelmaking-continuous casting process.

Production scheduling of a large-scale industrial continuous plant: Short-term and medium-term scheduling

2009 ◽  
Vol 33 (3) ◽  
pp. 670-686 ◽  
Author(s):  
Munawar A. Shaik ◽  
Christodoulos A. Floudas ◽  
Josef Kallrath ◽  
Hans-Joachim Pitz
Keyword(s):  
Production Scheduling ◽  
Large Scale ◽  
Medium Term ◽  
Short Term ◽  
Continuous Plant
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