Details

Autor(en) / Beteiligte

• Agner, Felix
• Kergus, Pauline
• Pates, Richard
• Rantzer, Anders

Titel

Combating district heating bottlenecks using load control

Ist Teil von

• Smart energy (Amsterdam), 2022-05, Vol.6, p.100067, Article 100067

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The 4th generation of district heating systems face a potential problem where lowered water temperatures lead to higher flow rates, which requires higher hydraulic capacity in terms of pipe and pump sizes. This increases the effect of the already existing issue of hydraulic bottlenecks, causing peripheral units (customers) to experience reduced flow rates. A coordinating control strategy is presented in this work aimed at reducing the effect of such bottlenecks on the comfort of customers. This is done by distributing the flow deficit over many units rather than a few. Previous works mainly focus on MPC-structured controllers that depend on complex system models and online optimization techniques. This work proposes a method that requires little information about models for individual units and minimal IT communication between control systems. The proposed method is compared with a traditional control strategy and an optimal baseline in a simulation study. This shows that the proposed method can decrease the worst case indoor temperature deviations. [Display omitted] •Hydraulic constraints in a line-shaped district heating network are formulated.•A load control method is proposed to balance the distribution of flow.•The method builds on existing control infrastructure.•The method's computational complexity is relatively low.•A simulation shows an 80% reduction of discomfort against traditional control.