Dimitra Apostolopoulou

Research Fellow

Dimitra is a Research Fellow in the Electricity Research Programme. Before joining OIES she was a Lecturer in the Engineering Department at City, University of London. She was also the Programme Director for the MSc in Renewable Energy and Power Systems Management; a member of the Energy, Sustainability and Net-Zero Research Centre and the Artificial Intelligence Research Centre both at City, University of London.

Previously, she was a Postdoctoral Researcher in the Engineering Department and a Lecturer at Christ Church College at University of Oxford and have worked at the Smart Grid & Technology Department in Commonwealth Edison (ComEd), Chicago, US. She obtained her PhD in Electrical and Computer Engineering from University of Illinois at Urbana-Champaign in December 2014 under the supervision of Prof. Peter Sauer and Prof. Alejandro D. Dominguez-Garcia; and her M.S. in 2011 from the same institution under the supervision of Prof. George Gross.

She was a member of the IEEE Power and Water Systems Taskforce; the IEEE P2030.7 Standard for the Specification of Microgrid Controllers Working Group; the IEEE P2030.8 Standard for the Testing of Microgrid Controllers Working Group; and the IEEE Distributed Resource Integration Working Group. She has been actively involved in professional service activities at the IEEE Power and Energy Society, being regular reviewer for highly cited conferences and journals. She was a Co-organiser of Risk and Resilience Day 2023, EPSRC Supergen Energy Networks Hub with Dr. Robin Preece from University of Manchester and she have served as a guest Editor in Sustainability and Energies journals. She have been invited to give seminars at various places, such as Imperial College London and King’s College London, UK; Argonne National Laboratory, US; and MINES ParisTech, France.

Contact

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  • This paper analyses capacity markets and proposes an approach to incorporate the flexibility of residential consumers in these markets considering reliability as a differentiated product.
  • We introduce and assess the potential of non-linear pricing schemes, specifically priority pricing contracts, as mechanisms to enhance implicit residential demand response.
  • We suggest a model to integrate priority pricing contracts via an aggregator as explicit demand response in capacity markets, advocating for participation on the ‘demand’ side rather than the ‘supply’ side to prevent market distortion and better align with consumer reliability preferences.
  • To incorporate these contracts into the capacity demand curve, we examine the correlation between capacity and reliability, establishing that under ideal conditions, the marginal cost of outages aligns with the marginal cost of capacity, thus linking capacity to the value of lost load and loss of load expectations. This connection informs the design of the capacity demand curve using data from priority pricing contracts.
  • We demonstrated this approach using the 2027-28 UK capacity market, and also introduced a refined capacity product for trading in capacity markets, designed to encourage investment in demand response resources and incorporating specifics about location, flexibility, and adjustments to the calculation of firm capacity profile.
  • Lastly, we propose a potential business model for the aggregator that leverages residential demand response that does not create distortions in the retail market.
[post_title] => Reforming Capacity Markets: How to Incorporate the Flexibility of Residential Consumers? [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => reforming-capacity-markets-how-to-incorporate-the-flexibility-of-residential-consumers [to_ping] => [pinged] => [post_modified] => 2024-05-28 11:05:19 [post_modified_gmt] => 2024-05-28 10:05:19 [post_content_filtered] => [post_parent] => 0 [guid] => https://www.oxfordenergy.org/?post_type=publications&p=47373 [menu_order] => 0 [post_type] => publications [post_mime_type] => [comment_count] => 0 [filter] => raw ) [1] => WP_Post Object ( [ID] => 47272 [post_author] => 111 [post_date] => 2024-04-29 10:26:49 [post_date_gmt] => 2024-04-29 09:26:49 [post_content] => Energy storage, encompassing not only the storage of electricity but also the storage of energy in various forms such as heat and chemicals, is a linchpin in the movement toward a decarbonized energy sector, due to its myriad roles in fortifying grid reliability, facilitating the integration of renewables, and advocating for energy efficiency and equity. Furthermore, energy storage facilitates the electrification of various sectors, including transportation and heating, promotes energy access in remote and underserved regions, and encourages the development of innovative business models and services in electricity markets. By exploring these topics, the articles in this issue of the Oxford Energy Forum (OEF) aim to stimulate insightful discussions that will influence policy, regulation, and market development, pushing forward the integration of energy storage solutions. The issue focuses on the critical function of energy storage in evolving electricity markets, highlighting its necessity in renewable integration and grid stability. It explores various storage forms, such as battery and chemical, and their role in balancing energy supply and demand both in short- as well as long-term, thus supporting a shift toward decarbonization. Additionally, it addresses the economic challenges posed by the high upfront costs, regulatory and revenue uncertainties of energy storage projects. The issue also examines different market designs and support schemes to alleviate these risks, underlining the need for innovative solutions to ensure long-term financial viability for storage investors and adapting electricity markets to accommodate the unique characteristics of storage technologies for sustainable energy system operations. [post_title] => Powering the Future: Energy Storage in Tomorrow's Electricity Markets - Issue 140 [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => powering-the-future-energy-storage-in-tomorrows-electricity-markets-issue-140 [to_ping] => [pinged] => [post_modified] => 2024-05-09 14:43:17 [post_modified_gmt] => 2024-05-09 13:43:17 [post_content_filtered] => [post_parent] => 0 [guid] => https://www.oxfordenergy.org/?post_type=publications&p=47272 [menu_order] => 0 [post_type] => publications [post_mime_type] => [comment_count] => 0 [filter] => raw ) [2] => WP_Post Object ( [ID] => 44580 [post_author] => 111 [post_date] => 2022-02-17 10:58:54 [post_date_gmt] => 2022-02-17 10:58:54 [post_content] => This paper proposes a distributed framework for vehicle grid integration taking into account the communication and physical networks. To this end, we model the electric vehicle behavior that includes times of departure and arrival, state of charge, required energy, and its objectives, e.g., avoid battery degradation and willingness to pay. Next, we formulate the centralised day ahead distribution market which explicitly represents the physical system, supports unbalanced three phase networks with delta and wye connections, and incorporates the charging needs of electric vehicles under a uni- and a bi-directional charging scheme. The solution of the centralised market requires knowledge of electric vehicle information in terms of desired energy, departure and arrival times that electric vehicle owners are reluctant in providing. Moreover, the computational effort required to solve the day ahead distribution market in cases of numerous electric vehicles is very intensive. As such, we propose a distributed solution of the day ahead distribution market clearing mechanism over a time-varying communication network where no private information is exchanged. We also incorporate uncertainty of electric vehicle charging needs and provide guarantees on the probability of constraint satisfaction. We illustrate the proposed vehicle grid integration framework through the 13-bus, 33-bus, and 141-bus distribution feeders. Apostolopoulou, D., Poudineh, R. and Sen, A., 2022. Distributed Vehicle to Grid Integration Over Communication and Physical Networks With Uncertainty Effects. IEEE Transactions on Smart Grid, 13(1), pp.626-640. 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  • This paper analyses capacity markets and proposes an approach to incorporate the flexibility of residential consumers in these markets considering reliability as a differentiated product.
  • We introduce and assess the potential of non-linear pricing schemes, specifically priority pricing contracts, as mechanisms to enhance implicit residential demand response.
  • We suggest a model to integrate priority pricing contracts via an aggregator as explicit demand response in capacity markets, advocating for participation on the ‘demand’ side rather than the ‘supply’ side to prevent market distortion and better align with consumer reliability preferences.
  • To incorporate these contracts into the capacity demand curve, we examine the correlation between capacity and reliability, establishing that under ideal conditions, the marginal cost of outages aligns with the marginal cost of capacity, thus linking capacity to the value of lost load and loss of load expectations. This connection informs the design of the capacity demand curve using data from priority pricing contracts.
  • We demonstrated this approach using the 2027-28 UK capacity market, and also introduced a refined capacity product for trading in capacity markets, designed to encourage investment in demand response resources and incorporating specifics about location, flexibility, and adjustments to the calculation of firm capacity profile.
  • Lastly, we propose a potential business model for the aggregator that leverages residential demand response that does not create distortions in the retail market.
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Latest Publications by Dimitra Apostolopoulou

Ongoing research by Dimitra Apostolopoulou