4.7 Article

Dispatch Model for Integrated Heat and Power Systems Considering Internal Composition of CHP Plants

Journal

CSEE JOURNAL OF POWER AND ENERGY SYSTEMS
Volume 7, Issue 2, Pages 396-407

Publisher

CHINA ELECTRIC POWER RESEARCH INST
DOI: 10.17775/CSEEJPES.2020.00560

Keywords

Combined heat and power (CHP) plant; CHP unit; economic dispatch; Integrated heat and power system; wind power integration

Funding

  1. National Key Research and Development Program of China [2017YFB0902100]

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IHPS is a promising approach for mitigating wind curtailment issues, particularly through modeling the internal composition of CHP plants to achieve synergistic effects of different energy resources, promoting wind power accommodation and reducing fossil fuel consumption.
An integrated heat and power system (IHPS) is a promising approach for alleviating wind curtailment problems. In an IHPS, the combined heat and power (CHP) plant is the key component, which supplies both heat and electric loads, and couples the thermal system and power system. However, existing research commonly ignores or simplifies the internal composition of CHP plants, which could lead to some unavoidable errors. This paper focuses on the internal composition of CHP plants, and models the physical processes in different components and flexible resources in the CHP plant. Furthermore, a joint dispatch problem of an IHPS with the above CHP plant models is formulated, and an iterative algorithm is developed to handle the nonlinearity in this problem. Case studies are performed based on a real CHP plant in Northern China, and the results indicate that the synergistic effect of different energy resources in the CHP plant is realized by the joint dispatch model, which promotes wind power accommodation and reduces fossil fuel consumption.

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