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Combined Heat and Power Dispatch Considering Heat Storage of Both Buildings and Pipelines in District Heating System for Wind Power Integration

Author

Listed:
  • Ping Li

    (Department of Electrical Engineering, Dalian University of Technology, Dalian 116024, China)

  • Haixia Wang

    (Department of Electrical Engineering, Dalian University of Technology, Dalian 116024, China)

  • Quan Lv

    (Department of Electrical Engineering, Dalian University of Technology, Dalian 116024, China)

  • Weidong Li

    (Department of Electrical Engineering, Dalian University of Technology, Dalian 116024, China)

Abstract

The strong coupling between electric power and heat supply highly restricts the electric power generation range of combined heat and power (CHP) units during heating seasons. This makes the system operational flexibility very low, which leads to heavy wind power curtailment, especially in the region with a high percentage of CHP units and abundant wind power energy such as northeastern China. The heat storage capacity of pipelines and buildings of the district heating system (DHS), which already exist in the urban infrastructures, can be exploited to realize the power and heat decoupling without any additional investment. We formulate a combined heat and power dispatch model considering both the pipelines’ dynamic thermal performance (PDTP) and the buildings’ thermal inertia (BTI), abbreviated as the CPB-CHPD model, emphasizing the coordinating operation between the electric power and district heating systems to break the strong coupling without impacting end users’ heat supply quality. Simulation results demonstrate that the proposed CPB-CHPD model has much better synergic benefits than the model considering only PDTP or BTI on wind power integration and total operation cost savings.

Suggested Citation

  • Ping Li & Haixia Wang & Quan Lv & Weidong Li, 2017. "Combined Heat and Power Dispatch Considering Heat Storage of Both Buildings and Pipelines in District Heating System for Wind Power Integration," Energies, MDPI, vol. 10(7), pages 1-19, June.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:893-:d:103235
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    References listed on IDEAS

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