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Economic Dispatch of CHP Units through District Heating Network’s Demand-Side Management

Author

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  • Pavel Rušeljuk

    (Narva Soojusvõrk AS, Oru 2, 20203 Narva, Estonia)

  • Kertu Lepiksaar

    (Department of Energy Technology, Tallinn University of Technology, 19086 Tallinn, Estonia)

  • Andres Siirde

    (Department of Energy Technology, Tallinn University of Technology, 19086 Tallinn, Estonia)

  • Anna Volkova

    (Department of Energy Technology, Tallinn University of Technology, 19086 Tallinn, Estonia)

Abstract

Optimisation of heat and electrical load distribution, where the objective function is the maximum efficiency of the CHP unit for a given load range, can be done considering the limitations of electrical power and the heat load. Simulating a real CHP unit with a district heating network shows that demand-side management can improve the overall economic efficiency of the CHP plant and increase the unit’s operating range in the electricity spot market. Economic dispatch makes it possible to determine a reasonable additional increase in the electric power of the CHP unit, and to optimise the supply temperature and mass flow of the district heating network. The results obtained and the analysis performed indicate that the proposed methodology provides logical results and can be used to calculate the efficiency indicators of the cogeneration of electrical and thermal energy. The problem of optimising the operating mode of the CHP unit was solved, which allows us to determine the optimal additional increase in the unit’s electrical load at a given heat load of consumers, which on average increases the CHP unit’s efficiency up to an additional 1.5%.

Suggested Citation

  • Pavel Rušeljuk & Kertu Lepiksaar & Andres Siirde & Anna Volkova, 2021. "Economic Dispatch of CHP Units through District Heating Network’s Demand-Side Management," Energies, MDPI, vol. 14(15), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4553-:d:602995
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    References listed on IDEAS

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    1. Pavel Ruseljuk & Andrei Dedov & Aleksandr Hlebnikov & Kertu Lepiksaar & Anna Volkova, 2023. "Comparison of District Heating Supply Options for Different CHP Configurations," Energies, MDPI, vol. 16(2), pages 1-14, January.

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