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Energies 2017, 10(7), 893; https://doi.org/10.3390/en10070893

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

Department of Electrical Engineering, Dalian University of Technology, Dalian 116024, China
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Received: 11 May 2017 / Revised: 8 June 2017 / Accepted: 28 June 2017 / Published: 30 June 2017
(This article belongs to the Section Electrical Power and Energy System)
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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. View Full-Text
Keywords: combined heat and power dispatch; pipelines’ dynamic thermal performance (PDTP); buildings’ thermal inertia (BTI); power and heat decoupling; wind power integration combined heat and power dispatch; pipelines’ dynamic thermal performance (PDTP); buildings’ thermal inertia (BTI); power and heat decoupling; wind power integration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Li, P.; Wang, H.; Lv, Q.; Li, W. Combined Heat and Power Dispatch Considering Heat Storage of Both Buildings and Pipelines in District Heating System for Wind Power Integration. Energies 2017, 10, 893.

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