Capacity measures a system’s ability to survive stress. For example, structures are engineered in part to have the capacity to survive the worst wind loads expected over the life of the structure. Likewise wind electric power systems should have the capacity to reliably survive the worst combination of high load and low wind. A superior approach for quantifying wind’s contribution to system capacity is well known. It is to view wind as a negative load and use the Effective Load Carrying Capacity (ELCC) methodology for a given year. A frequent mistake is to average these annual ELCC estimates. A main contribution of this paper is to explain why the system design criteria should take the worst of the annual ELCC estimates over a number of years and not an average of annual ELCC estimates. Based on extreme events, wind generation contributes little to system capacity (<6.6% of wind nameplate). The empirical evidence shows that wind generation is an energy source, not a capacity resource.
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ASME 2014 Power Conference
July 28–31, 2014
Baltimore, Maryland, USA
Conference Sponsors:
- Power Division
ISBN:
978-0-7918-4608-7
PROCEEDINGS PAPER
Wind System Reliability and Capacity Available to Purchase
Alex Pavlak,
Alex Pavlak
Future of Energy Initiative, Severna Park, MD
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Harry V. Winsor
Harry V. Winsor
Future of Energy Initiative, Catonsville, MD
Search for other works by this author on:
Alex Pavlak
Future of Energy Initiative, Severna Park, MD
Harry V. Winsor
Future of Energy Initiative, Catonsville, MD
Paper No:
POWER2014-32148, V001T06A004; 6 pages
Published Online:
November 19, 2014
Citation
Pavlak, A, & Winsor, HV. "Wind System Reliability and Capacity." Proceedings of the ASME 2014 Power Conference. Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues. Baltimore, Maryland, USA. July 28–31, 2014. V001T06A004. ASME. https://doi.org/10.1115/POWER2014-32148
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