A two-step optimization model for quantifying the flexibility potential of power-to-heat systems in dwellings

Oluleye, Gbemi and Allison, John and Hawker, Graeme and Kelly, Nick and Hawkes, Adam D. (2018) A two-step optimization model for quantifying the flexibility potential of power-to-heat systems in dwellings. Applied Energy, 228. pp. 215-228. ISSN 0306-2619

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    Abstract

    Coupling the electricity and heat sectors is receiving interest as a potential source of flexibility to help absorb surplus renewable electricity. The flexibility afforded by power-to-heat systems in dwellings has yet to be quantified in terms of time, energy and costs, and especially in cases where homeowners are heterogeneous prosumers. Flexibility quantification whilst accounting for prosumer heterogeneity is non-trivial. Therefore in this work a novel two-step optimization framework is proposed to quantify the potential of prosumers to absorb surplus renewable electricity through the integration of air source heat pumps and thermal energy storage. The first step is formulated as a multi-period mixed integer linear programming problem to determine the optimal energy system, and the quantity of surplus electricity absorbed. The second step is formulated as a linear programming problem to determine the price a prosumer will accept for absorbing surplus electricity, and thus the number of active prosumers in the market. A case study of 445 prosumers is presented to illustrate the approach. Results show that the number of active prosumers is affected by the quantity of absorbed electricity, frequency of requests, the price offered by aggregators and how prosumers determine the acceptable value of flexibility provided. This study is a step towards reducing the need for renewable curtailment and increasing pricing transparency in relation to demand-side response.

    Author(s):Oluleye, Gbemi, Allison, John ORCID: https://orcid.org/0000-0003-3133-0558, Hawker, Graeme ORCID: https://orcid.org/0000-0003-2876-4371, Kelly, Nick ORCID: https://orcid.org/0000-0001-6517-5942 and Hawkes, Adam D.
    Item type:Article
    ID code:64970
    Keywords:air source heat pump, demand-side response, flexibility, power-to-heat, surplus electricity, thermal energy storage, Building construction, Mechanical engineering and machinery, Building and Construction, Energy(all), Mechanical Engineering
    Subjects:Technology > Building construction
    Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    University of Strathclyde > University of Strathclyde
    Faculty of Engineering > Electronic and Electrical Engineering
    Strategic Research Themes > Energy
    Depositing user: Pure Administrator
    Date deposited:01 Aug 2018 15:30
    Last modified:09 Aug 2019 03:11
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/64970
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