Energy storage system impact on the operation of a demand response aggregator

dc.contributor.authorVahid-Ghavidel, Morteza
dc.contributor.authorJavadi, M.S.
dc.contributor.authorSantos, Sérgio F.
dc.contributor.authorGough, M.
dc.contributor.authorShafie-khah, M.
dc.contributor.authorCatalão, J.P.S.
dc.description.abstractIn this paper, we consider a demand response (DR) aggregator responsible for participating in the wholesale electricity market on behalf of the end-users who participated in the DR programs. Thus, the DR aggregator can trade its acquired DR within the short-term electricity markets, i.e., the day-ahead and the balancing (real-time) markets. In the proposed framework, the electricity market prices are considered uncertain, and a robust optimization approach is applied to address the uncertainties to maximize the profit of the DR aggregator. A model for analyzing the impact of the energy storage system (ESS) unit on a DR aggregator's performance is developed to provide more flexibility for the consumers. The direct interactions of a DR aggregator with an ESS are neglected in many models. However, this consideration can lead to improvement in the flexibility of the aggregator and also increase the profit of the entity by trading energy in the short-term markets to charge the ESS during the low-price periods and discharge it to the market while the electricity market prices are high. Hence, it is assumed that the DR aggregator owns an ESS unit and can cover a percentage of its traded power through the ESS. An analysis of the impact of the ESS unit on the DR aggregator's performance is applied to study the most appropriate size of the ESS that can maximize the profit of the aggregator. In addition, renewable energy production is employed for end-users through the installation of rooftop photovoltaic (PV) panels. This demand-side renewable generation can provide more flexibility for the participants in DR programs. Various feasible case studies have been applied to demonstrate the model's effectiveness and usefulness, and conclusions are duly drawn. The numerical results indicate that having an ESS seems necessary when the decision-maker desires to protect its profit from the worst-case scenarios and reduces the negative effect of the uncertain parameter, i.e., the wholesale electricity market prices. Thus, it can be shown that having a greater capacity for the ESS has a significant and direct impact on increasing the profit of the aggregator even in the worst-case scenarios, where the profit rises 20 % when the budget of uncertainty in the robust optimization is equal to 12.pt_PT
dc.identifier.citationVahid-Ghavidel, M., Javadi, M. S., Santos, S. F., Gough, M., Shafie-khah, M., & Catalão, J. P. S. (2023). Energy storage system impact on the operation of a demand response aggregator. Journal of Energy Storage, 64(107222), 1-9. Repositório Institucional UPT.
dc.relationMorteza Vahid-Ghavidel: Methodology, Investigation, Data curation, Writing –original draft. Mohammad Sadegh Javadi: Formal analysis, Validation. Sergio ´ F. Santos: Conceptualization, Visualization. Matthew Gough: Writing – review & editing. Miadreza Shafie-khah: Supervision, Validation. Joao ˜ P.S. Catalao: ˜ Supervision, Writing – review & editing.pt_PT
dc.rightsopen accesspt_PT
dc.subjectDemand responsept_PT
dc.subjectElectricity marketspt_PT
dc.subjectEnergy storage systempt_PT
dc.subjectRenewable energy resourcespt_PT
dc.subjectRobust optimizationpt_PT
dc.titleEnergy storage system impact on the operation of a demand response aggregatorpt_PT
dc.typejournal articlept_PT
degois.publication.titleJournal of Energy Storagept_PT


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