Periodical replanning with hierarchical repairing for the optimal operation of a utility plant

The integration methodology of periodical replanning and hierarchical repairing is proposed to handle the prediction errors of energy demands in the multiperiod operational planning. The periodical replanning is implemented by the decomposition method. The hierarchical repairing is triggered during...

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Bibliographic Details
Published in:Control engineering practice 2003-08, Vol.11 (8), p.881-894
Main Authors: Yi, Heui-Seok, Kim, Jeong Hwan, Han, Chonghun, Jung, Jae Hak, Lee, Moon Yong, Lee, Jie Tae
Format: Article
Language:English
Subjects:
Hierarchical repairing
Knowledge base
Multiperiod planning
Optimization
Periodical replanning
Prediction error
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Summary:The integration methodology of periodical replanning and hierarchical repairing is proposed to handle the prediction errors of energy demands in the multiperiod operational planning. The periodical replanning is implemented by the decomposition method. The hierarchical repairing is triggered during the execution interval when prediction errors in energy demands exist. The hierarchical repairing uses the heuristic knowledge. The efficiency indices for utility pumps are introduced to determine the optimal configuration of motors and turbines for running utility pumps without integer programming. Case studies show that the proposed method is more profitable than the periodical replanning. The operational cost is reduced by 0.9–4.0% compared with the cost by the periodical replanning.
ISSN:0967-0661
1873-6939
DOI:10.1016/S0967-0661(02)00214-9