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dc.contributor.advisorChalmers, Hannahen
dc.contributor.advisorHarrison, Garethen
dc.contributor.authorBruce, Robert Alasdair Wilsonen
dc.date.accessioned2017-02-20T10:42:46Z
dc.date.available2017-02-20T10:42:46Z
dc.date.issued2016-06-27
dc.identifier.urihttp://hdl.handle.net/1842/20387
dc.description.abstractThe integration of variable renewable energy sources (VRE) is likely to cause fundamental and structural changes to the operation of future power systems. In the United Kingdom (UK), large amounts of price-insensitive and variable-output wind generation is expected to be deployed to contribute towards renewable energy and carbon dioxide (CO2) emission targets. Wind generation, with near-zero marginal costs, limited predictability, and a limited ability to provide upward dispatch, displaces price-setting thermal power plants, with higher marginal costs, changing flexibility and reserve requirements. New-build, commercial-scale, and low-carbon generation capacity, such as CO2 capture and storage (CCS) and nuclear, may impact power system flexibility and ramping capabilities. Low-carbon generation portfolios with price-sensitive thermal power plants and energy storage are therefore likely to be required to manage increased levels of variability and uncertainty at operational timescales. This work builds on a high-resolution wind reanalysis dataset of UK wind sites. The locations of existing and proposed wind farms are used to produce plausible and internally consistent wind deployment scenarios that represent the spatial distribution of future UK wind capacity. Temporally consistent electricity demand data is used to characterise and assess demand-wind variability and net demand ramp events. A unit commitment and economic dispatch (UCED) model is developed to evaluate the likely operating regimes of thermal power plants and CCS-equipped units across a range of future UK wind scenarios. Security constraints for reserve and power plant operating constraints, such as power output limits, ramp rates, minimum up/down times, and start-up times, ensure the operational feasibility of dispatch schedules. The load factors, time spent at different loads, and the ramping and start-up requirements of thermal power plants are assessed. CO2 duration curves are developed to assess the impacts of increasing wind capacity on the distribution of CO2 emissions. A sensitivity analysis investigates the impacts of part-load efficiency losses, ramp rates, minimum up/down times, and start-up/shut-down costs on power plant operating regimes and flexibility requirements. The interactions between a portfolio of energy storage units and flexible CO2 capture units are then explored. This multi-disciplinary research presents a temporally-explicit and detailed assessment of operational flexibility requirements at full 8760 hour resolution, highlighting the non-linear impacts of increasing wind capacity. The methodological framework presented here uses high spatial-and temporal-resolution wind data but is expected to provide useful insights for other VREbased power systems to mitigate the implications of inadequate flexibility.en
dc.contributor.sponsorEngineering and Physical Sciences Research Council (EPSRC)en
dc.language.isoen
dc.publisherThe University of Edinburghen
dc.relation.hasversionA. R. W. Bruce, G. P. Harrison, J. Gibbins, and H. Chalmers, “Operational flexibility of future generation portfolios using high spatial- and temporal-resolution wind data,” IEEE Transactions on Sustainable Energy, 2015. DOI: 10.1109/TSTE.2015.2497704en
dc.relation.hasversionA. R. W. Bruce, G. P. Harrison, J. Gibbins, and H. Chalmers, “Assessing operating regimes of CCS power plants in high wind and energy storage scenarios,” Energy Procedia, vol. 63, pp. 7529-7540, Elsevier, 2014. DOI: 10.1016/j.egypro.2014.11.789en
dc.relation.hasversionA. R. W. Bruce, G. P. Harrison, J. Gibbins, and H. Chalmers, “Impacts of wind and energy storage on future thermal power plant operating regimes,” In EI Energy Systems Conference 2014, London, UK.en
dc.relation.hasversionA. R. W. Bruce, G. P. Harrison, J. Gibbins, and H. Chalmers, “Reviewing case study examples of energy storage capabilities to uncover practical outcomes in terms of ease and efficiency,” In 3rd Annual Power Plant Flexibility and Optimization Conference 2013, Amsterdam, Netherlands.en
dc.subjectoperating regimesen
dc.subjectpower plantsen
dc.subjectCO2en
dc.subjectCarbon Capture and Storageen
dc.subjectunit commitment and economic dispatchen
dc.subjectUCEDen
dc.subjectwinden
dc.subjectenergy storageen
dc.titleImpacts of variable renewable generation on thermal power plant operating regimesen
dc.typeThesis or Dissertationen
dc.type.qualificationlevelDoctoralen
dc.type.qualificationnamePhD Doctor of Philosophyen


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