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Ancillary Services by Thermal Energy Storage Systems in Smart Grids

Ancillary Services by Thermal Energy Storage Systems in Smart Grids. P. Romano s 1 , P. Eame s 1 , C. N. Markides 2 , N. Hatziargyriou 3 , N. Soultanis 3 1 CREST, School of Electronic, Electrical and Systems Engineering, Loughborough University, Loughborough, LE11 3TU

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Ancillary Services by Thermal Energy Storage Systems in Smart Grids

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  1. Ancillary Services by Thermal Energy Storage Systems in Smart Grids P. Romanos1, P. Eames1, C. N. Markides2, N. Hatziargyriou3, N. Soultanis3 1 CREST, School of Electronic, Electrical and Systems Engineering, Loughborough University, Loughborough, LE11 3TU 2 Clean Energy Processes (CEP) Laboratory, Department of Chemical Engineering, Imperial College London, London SW7 2AZ 3 School of Electrical Computer Engineering, Division of Electric Power, National Technical University of Athens, Zografou 15780 June 2016

  2. Contents The Concept Power Stations with Thermal Energy Storage Distributed Generation with Thermal Energy Storage Stability and Ancillary Services Analysis Conclusions

  3. Greater System Uncertainty due to More Asynchronous Generators – Germany: “50.2 Hz problem” – Automatic disconnection of PV systems National Grid Frequency data to a 15 second resolution 16:00-17:00, 5/6/2016

  4. Firm Frequency Response (Dynamic) – Primary and Secondary Balancing Services Timeline 30 minutes 50 Hz 20 seconds 50 Hz 49.8 Hz 49.5 Hz

  5. EDF Power Plant Grand Composite Curves Sensible 13% Latent 87%

  6. Different Heat Absorption Profiles of the Working fluid within an ORC Engine Sensible 13% Latent 87% QI QII

  7. Heat Exchanger Network Diagram – ORC Engine working fluid absorbing heat from 2 waste heat streams

  8. 1 hour Charging 25.6 MWh 1 hour Discharging 25.6 MWh

  9. Derating Plant versus Steam Extraction

  10. Rankine Cycle Efficiency versus Steam Extraction

  11. Heat Rate Input Versus Steam Extraction

  12. Thermal Energy Storage versus Net Generator Output

  13. Net Generator Output and Available Electrical Energy from Thermal Energy Storage

  14. Power Station Electrical Generation During Peak Demand

  15. 1 MW ORC turbine electrical power, simulated and measured vs. time (1 day, 2012-01-03) 30 s

  16. Dynamic Primary and Secondary Frequency Response - Thermal Energy Storage ORC Generators Droop 30 minutes 30 seconds 10 seconds

  17. National Grid – Firm Frequency Response Tender Sheet – EDF ORC 151 MW Profits: £39,000/day (£1680/hour X 23 hours/day = £39,000/day )

  18. Grid Integration of Decentralised Power Production • Stability: • Power Flows • Renewable Energy Sources • Storage • Intelligent Load Demand TES Jurgen Schmid. Grid Integration of Decentralised Power Production. Fraunhofer IWES [Online] http://www.iwes-fraunhofer.de.

  19. Static Firm Frequency Response – Multi Agents in Smart Grids 30 minutes 10 s

  20. Pay Back Period:20 Years

  21. Conclusions Thermal Energy Storage Units can play an important role in providing ancillary services Grand Composite Curves with Heat Exchanger Networks is the key function for the deployment of Thermal Energy Storage in Power Stations Maximum Power Station Profits with Dynamic Primary and Secondary Frequency Responses of £270,000 per week Maximum Power Station Net Profits with Static Frequency Response during Peak Demand £8,400 per week

  22. Acknowledgments Dimitris Tsintzilonis, TERNA Qatar Constructions Richard Hawksby, EDF James Bowers, SSE Richard Drew, EON Panagiotis Papadopoulos, UK Power Networks Holdings Limited Irena Wasiak and Janusz Buchta, Lodz University Oyewunmi Oyeniyi and Cedillos Alvarado Dagoberto, Imperial College Nikos Daniil, Bristol University

  23. Thank you for your Attention! P. Romanos

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