Optimal Temperature Control of Large Scale District Heating Networks - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Proceedings/Recueil Des Communications Energy Procedia Année : 2018

Optimal Temperature Control of Large Scale District Heating Networks

R. Bavière
  • Fonction : Auteur

Résumé

The present paper synthetizes four years of research conducted by our team in collaboration with CCIAG, the operating company of the Grenoble large scale district heating network. This research focused on the design of a model predictive controller that optimizes the distribution of heat by an appropriate scheduling of supply temperatures and differential pressure at the production level. The controller relies on a heat load prediction covering a 24 h anticipation horizon combined with a constrained optimization problem. More specifically, our research was divided in four topics. First, we proposed and assessed various day-ahead load prediction models. An original feature of our work is to explicitly account for the network storage effect resulting from supply temperature variations. Second, we formulated a linear problem consisting of an objective function reflecting the production costs and a set of constraints representing, inter alia, the heat transport dynamics. In our solution, some of the parameters (e.g. producer-consumer temperature transportation delay) of the optimization program are periodically updated using dynamic simulation. Third, a fast fluid-dynamic simulation code based on a reduced-order model was designed and assessed. Finally, the developed models were all implemented and assembled in a decision support software tool called PEGASE. We proved the feasibility of running our controller in real-time for a large-scale DHN and the proposed solution is currently being evaluated by CCIAG.

Dates et versions

cea-04584035 , version 1 (22-05-2024)

Identifiants

Citer

R. Bavière, Mathieu Vallee. Optimal Temperature Control of Large Scale District Heating Networks. 16th International Symposium on District Heating and Cooling, DHC2018, 9–12 September 2018, Hamburg, Germany, Energy Procedia, 149, pp.69-78, 2018, ⟨10.1016/j.egypro.2018.08.170⟩. ⟨cea-04584035⟩
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