期刊
APPLIED ENERGY
卷 88, 期 12, 页码 4785-4794出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2011.06.054
关键词
Demand side management; Maximum demand; Model predictive control; Optimal control; Water pumping
资金
- National Research Foundation
- South African National Energy Research Institute
This paper defines and simulates a closed-loop optimal control strategy for load shifting in a plant that is charged for electricity on both time-of-use (TOU) and maximum demand (MD). A model predictive control approach is used to implement the closed-loop optimal control model, and the optimization problem is solved with integer programming. The simulated control model yields near optimal switching times which reduce the IOU and MD costs. The results show a saving of 5.8% for the overall plant, and the largest portion of the saving is due to a reduction in MD. The effect of disturbances, model uncertainty and plant failure is also simulated to demonstrate the benefits of a model predictive control model. (C) 2011 Elsevier Ltd. All rights reserved.
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