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A multi-rate dynamic analysis method of individual-based district heating system

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  • Xu, Changrui
  • Xu, Xiaosheng
  • Li, Mengshi
  • Wu, Qinghua
  • Zheng, Jiehui
  • Xiao, Wenting

Abstract

The new generation of the district heating system (DHS) has attracted much attention due to its high efficiency. A precise and fast dynamic simulation is the foundation of the optimization and control strategy of a DHS. As a type of heterogeneous system, the DHS has internal components with multiple time scales, which limits accuracy of simulations. However, current studies have either chosen pseudo-dynamic models or have not considered the effect of the internal time scale on the simulation. To solve above problems, a dynamic multi-rate simulation method based on the individual-based model (IBM) is proposed in this paper. According to IBM, a complex system is decoupled into individuals, who interact with each other to form the whole system from bottom-up. During the process of modeling, equations of individuals indicating their dynamic behaviors are all converted into a system of ordinary differential equations (ODEs). And then the ODEs are solved from system level using multi-rate simulation methods. The case study illustrates that the proposed method takes 36.59 s for the 72 h long-term simulation of the DHS containing three components commonly involved and a district heating network, which provides good decision-making information for the optimal control of the system.

Suggested Citation

  • Xu, Changrui & Xu, Xiaosheng & Li, Mengshi & Wu, Qinghua & Zheng, Jiehui & Xiao, Wenting, 2024. "A multi-rate dynamic analysis method of individual-based district heating system," Energy, Elsevier, vol. 295(C).
    • Handle: RePEc:eee:energy:v:295:y:2024:i:c:s036054422400745x
    DOI: 10.1016/j.energy.2024.130973
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    References listed on IDEAS

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