نتایج جستجو برای: wind uncertainty

تعداد نتایج: 203470  

2012
U. Bhaskar Gunturu Adam Schlosser John M. Reilly U. B. Gunturu

Wind resource in the continental and offshore United States has been reconstructed and characterized using metrics that describe, apart from abundance, its availability, persistence and intermittency. The Modern Era Retrospective-Analysis for Research and Applications (MERRA) boundary layer flux data has been used to construct wind profile at 50 m, 80 m, 100 m, 120 m turbine hub heights. The wi...

Journal: :Journal of Structural and Construction Engineering (Transactions of AIJ) 2016

Journal: :Journal of Geophysical Research: Space Physics 2014

2015
John Dalsgaard Sørensen

Wind turbines can be considered as structures that are in between civil engineering structures and machines since they consist of structural components and many electrical and machine components together with a control system. Further, a wind turbine is not a one-of-a-kind structure but manufactured in series production based on many component tests, some prototype tests and zeroseries wind tur...

2013
S. E. Lane J. F. Barlow

Currently there are few observations of the urban wind field at heights other than rooftop level. Remote sensing instruments such as Doppler lidars provide wind speed data at many heights, which would be useful in determining wind loadings of tall buildings, and predicting local air quality. Studies comparing remote sensing with traditional anemometers carried out in flat, homogeneous terrain o...

2006
Youlong Xia

[1] World Meteorological Organization (WMO) regression models for precipitation gauge bias developed by Goodison et al. (1998) were optimized using the very fast simulated annealing algorithm. The regression model uncertainties were estimated by use of a Bayesian stochastic inversion (BSI) algorithm. Legates and Willmott’s (1990) precipitation correction factors database (applicable to average ...

Although significant private investment is absorbed in different sectors of power systems, transmission sector is still suffering from appropriate private investment. This is because of the pricing policies of transmission services, tariffs, and especially for investment risks. Investment risks are due to the uncertain behaviour of power systems that discourage investors to invest in the transm...

2013
Edgardo D. Castronuovo Julio Usaola Ricardo Bessa Manuel Matos I. C. Costa L. Bremermann Jesus Lugaro George Kariniotakis

The increasing wind power penetration in power systems represents a techno-economic challenge for power producers and system operators. Due to the variability and uncertainty of wind power, system operators require new solutions in order to increase the controllability of wind farm output. On the other hand, producers that include wind farms in their portfolio need to find new ways to boost the...

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