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Direct Model Predictive Control: A Theoretical and Numerical Analysis

This paper focuses on online control policies applied to power systems management. In this study, the power system problem is formulated as a stochastic decision process with large constrained action space, high stochasticity and dozens of state variables. Direct Model Predictive Control has previously been proposed to encompass a large class of stochastic decision making problems. It is a hybrid model which merges the properties of two different dynamic optimization methods, Model Predictive Control and Stochastic Dual Dynamic Programming. In this paper, we prove that Direct Model Predictive Control reaches an optimal policy for a wider class of decision processes than those solved by Model Predictive Control (suboptimal by nature), Stochastic Dynamic Programming (which needs a moderate size of state space) or Stochastic Dual Dynamic Programming (which requires convexity of Bellman values and a moderate complexity of the random value state). The algorithm is tested on a multiple-battery management problem and two hydroelectric problems. Direct Model Predictive Control clearly outperforms Model Predictive Control on the tested problems.

Author(s):

Marie-Liesse Cauwet    
University of Liège
Belgium

Jérémie Decock    
CEA Saclay
France

Jialin Liu    
University of Essex
United Kingdom

Olivier Teytaud    
TAO/Inria Saclay-IDF
France

 

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