Optimal operational planning for district heating coupled industrial energy systems considering participation models

• Published in: Procedia CIRP 2023, Vol.116, p.203-208
• Main Authors: Kohne, Thomas, Piendl, Daniel, Theisinger, Lukas, Weigold, Matthias
• Format: Article
• Language: English
• Subjects: bilevel optimization; heat pricing; heat transfer station; Industrial energy system; operational strategy; waste heat
• ISSN: 2212-8271; 2212-8271
• DOI: 10.1016/j.procir.2023.02.035

To accelerate the transition of the heating sector possibilities are discussed to make excess heat from industrial companies available for building supply via district heating systems (DHS). By coupling complex industrial energy systems (IES) with DHS the utilization of industrial waste heat, renewable energy sources as well as more efficient energy converters can be increased. In the transformation of DHS through an increasingly decentralized heat supply and the integration of prosumers, different pricing schemes are being discussed. To participate in DHS, IES must consider different participation models during their investment and operational planning. We present an optimization approach for the operational planning of IES focusing on the coupling to DHS. The modeling approach can adapt to different participation models within DHS such as contractual pricing, coordinated feed-in, and cooperative operation. The optimization yields the optimal operating decisions and cost. The results of an industrial use case shows that a higher utilization of waste heat and energy converters such as combined heat and power can be reached by coupling IES to DHS, but the cost and emission savings are highly dependent on the participation model of the DHS.