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Estimating power plant start costs in cyclic operation

Keatley, Patrick, Shibli, Ahmed and Hewitt, Neil (2013) Estimating power plant start costs in cyclic operation. Applied Energy, 111 . pp. 550-557. [Journal article]

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URL: http://dx.doi.org/10.1016/j.apenergy.2013.05.033

DOI: 10.1016/j.apenergy.2013.05.033

Abstract

In many power systems large thermal generating units, which were primarily designed to resist creep damage caused by base load operation throughout an effective service life of more than 40 years, are being operated cyclically as a result of market liberalization and the rapid expansion of intermittent renewable energy sources. This type of off-design operation results in accelerated rates of life consumption due to the initiation of fatigue-related damage mechanisms which these units were not designed to withstand. This issue is of particular concern to the owners and operators of thermal generators in the Irish all-island system because of the significantly increased levels of cycling duty that their units will be required to perform as a result of plans to integrate very high levels of wind power by 2020. The impacts of cyclic operation on unit operating costs, scheduling and availability has largely been overlooked in renewable energy integration studies. The authors draw on the results of recent studies in Ireland and elsewhere to relate fatigue-life consumption (measured in total lifetime starts) and damage accumulation (measured in annual maintenance costs) to create a model which can be used to forecast lifetime hot, warm and cold per-start costs for a typical base load unit in a range of market and wind-penetration scenarios.

Item Type:Journal article
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute > Centre for Sustainable Technologies (CST)
Built Environment Research Institute
ID Code:26446
Deposited By: Dr Patrick Keatley
Deposited On:18 Jul 2013 11:00
Last Modified:18 Jul 2013 11:00

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