Hydro power valley control: Decomposition/Coordination methods
Résumé
Hydro-power valleys can be considered as (large scale) plants that provide CO2-free power with good manoeuvrability capabilities. These plants are however submitted to the other ecological or process constraints, and they are made of various interconnected hydroelectric production units. In view of the institutional and society evolution, hydroelectric production recovers consideration for its flexibility, and the EDF French group gradually engages the improvement of hydroelectric plants it manages, by taking into account the overall optimization problem. Today indeed, most of the plants are controlled by decentralized power and level PID control with references determined by off-line optimization. In order to improve the efficiency of the whole hydro-power valley instead, an on-line optimal control with HD-MPC1 solution is studied. In the present work, some corresponding optimization problem formulation as well as possible use of so-called decomposition/coordination methods will be discussed. More precisely, those formulation and discussion will be based on a case study chosen to be relevant to a real application.