Rolling Horizon Condition-based Planning of Production and Utility Systems in Process Industries

Abstract

Abstract The reactive condition-based planning of production and utility system follows a rolling horizon modelling approach in order to deal with process uncertainty. The proposed optimization framework considers for the production and utility units: (i) improved unit performance degradation and recovery models; (ii) alternative options for offline cleaning tasks; (iii) limited availability of cleaning resources; and (iv) initial state of the system at the beginning of each planning horizon. In particular, in comparison with a rolling horizon sequential approach, the rolling horizon integrated approach can achieve considerable reductions in total costs. The purchases of utility resources can be avoided by the proposed integrated approach as demonstrated in a case study. Overall, the proposed integrated approach results in more resource- and energy- efficient processing plans.