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The Flexibility of Thermostatically Controlled Loads as a Function of Price Notice Time
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems. (IRES)ORCID iD: 0000-0003-0685-0199
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems. (IRES)ORCID iD: 0000-0002-8189-2420
University of Michigan Ann Arbor, MI 48109 USA. (Department of Electrical Engineering & Computer Science)
2018 (English)In: 2018 POWER SYSTEMS COMPUTATION CONFERENCE (PSCC), Dublin: IEEE conference proceedings, 2018Conference paper, Published paper (Refereed)
Abstract [en]

Due to increased use of variable renewable energy sources, more capacity for balancing and ancillary services (AS) is required. Non-generating resources such as thermostatically controlled loads (TCLs) can arbitrage energy prices and provide AS due to their thermal energy storage capacity. This paper explores the impact of energy/AS price notice time, i.e. the time between when the price is announced and when it takes effect, on the TCL energy consumption and AS capacity bids, and quantifies trade-offs between notice time and flexibility. We first optimize the energy consumption and AS capacity offers at a given notice time, varied from 24 hours ahead to real-time. We then introduce uncertainty in TCL availability, formulate the stochastic optimization problem, and evaluate how the trade-offs change. We find that price notice time impacts TCL profits, but does not significantly affect the total AS capacity offered over the day. However, AS capacity offers are impacted by uncertainty, which is likely to increase with notice time.

Place, publisher, year, edition, pages
Dublin: IEEE conference proceedings, 2018.
Keywords [en]
ancillary services, demand response, electricity prices, notice time, thermostatically controlled loads
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-231946ISI: 000447282400092OAI: oai:DiVA.org:kth-231946DiVA, id: diva2:1231139
Conference
Power Systems Computation Conference (PSCC) 2018
Funder
Swedish Energy Agency, 76178
Note

QC 20180717

Available from: 2018-07-05 Created: 2018-07-05 Last updated: 2018-11-05Bibliographically approved

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Herre, LarsSöder, Lennart

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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