Mod-2 Wind Turbine Loads Test Correlations

1986 ◽  
Vol 108 (1) ◽  
pp. 26-30
Author(s):  
D. K. Zimmerman ◽  
S. A. Shipley
Keyword(s):  
Wind Turbine ◽  
Electric Power ◽  
Vortex Generator ◽  
Electric Power Research Institute ◽  
Sampling Techniques ◽  
Fatigue Load ◽  
Test Program ◽  
Load Spectra ◽  
Boeing Company ◽  
Prediction Techniques

The Boeing Company, under contract to the Electric Power Research Institute (EPRI), has completed a test program on the Mod-2 wind turbines at Goodnoe Hills, Washington. The objectives were to update fatigue load spectra for different sites, to measure vortex generator effects, and to evaluate rotational sampling techniques. This paper presents the results of these tests and assesses the adequacy of prediction techniques.

scholarly journals Análise de Perdas Técnicas em Sistemas de Distribuição com Controle de Potência Reativa da Geração Distribuída

2020 ◽  
Author(s):  
Luan A. Sousa ◽  
Rodolfo V. Rocha ◽  
Renato M. Monaro ◽  
Marina Timo de Sá
Keyword(s):  
Electric Power ◽  
Electric Power Research Institute ◽  
Research Institute

Com o aumento da inserção de unidades de geração, principalmente fotovoltaica e eólica, nos sistemas de distribuição modernos, tem sido muito discutido como essas podem auxiliar no suporte a rede. O controle de tensão e compensação de reativos em redes têm sido os mais abordados, muitas vezes como forma de auxílio a reguladores de tensão e bancos de capacitores. O presente artigo tem como objetivo analisar as perdas técnicas em um alimentador de um sistema de distribuição real quando a geração é usada para suporte de reativo. Foram avaliados os controles de "fator de potência" e da tensão no ponto de conexão. Como caso de estudo foi usado um sistema de distribuição real disponibilizado pelo Electric Power Research Institute. Notou-se que o controle de reativo empregado pelasgerações distribuídas altera as perdas dos elementos do sistema.

The Study of Wake and Array of Double Wind Turbine

2013 ◽  
Vol 448-453 ◽  
pp. 1707-1711
Author(s):  
Rui Yang ◽  
Wei Wei Xia ◽  
Jin Long Li
Keyword(s):  
Numerical Simulation ◽  
Wind Turbine ◽  
Turbulence Intensity ◽  
Fatigue Load ◽  
Wake Effect ◽  
Wake Field ◽  
Aerodynamic Interaction ◽  
Simulation Results ◽  
Effective Use ◽  
Wind Resources

For the effective use of wind resources, and in order to decrease the wake effect on the performance of wind turbine, a numerical simulation has carried out to the aerodynamic interaction between two rotors coaxial arrangement. At last the numerical simulation results are verified by experiment. The results show that downstream turbine makes the upstream diverging wake to be converged when coaxial arrangement, and the output of downstream turbine is affected by upstream wake when the distance is less than 5D.The wake field become more diffused after pass the downstream turbine, the area of diverging wake become larger than the wake of upstream turbine mainly due to the increase of turbulence intensity. The greater fatigue load will impact on the downstream turbine. At last the simulation results are in well agreement with the experimental results.

Analysis and Observations of Wind Turbine Yaw Dynamics

1989 ◽  
Vol 111 (4) ◽  
pp. 367-371 ◽  
Author(s):  
A. C. Hansen ◽  
X. Cui
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Quantitative Agreement ◽  
Complex Model ◽  
New Methods ◽  
New Models ◽  
Solution Methods ◽  
Horizontal Axis Wind Turbines ◽  
Temporal And Spatial ◽  
Prediction Techniques

Two models of the yaw behavior of horizontal axis wind turbines are presented and discussed. Emphasis in this paper is on the description of the models and underlying assumptions with details of the equations and solution methods referenced in technical reports. The more complex model (YawDyn) considers the coupling of blade flap motions and yaw motions which result from temporal and spatial variations in the approaching wind speed. The new methods are unique in that they simultaneously model the effects of skewed wake aerodynamics and blade stall. Both of these effects must be considered if yaw behavior is to be adequately understood. The models are validated by comparison with other prediction techniques, wind tunnel tests and full-scale atmospheric tests. In all cases the models are shown to give excellent qualitative agreement and reasonable quantitative agreement. It is concluded that the new models represent a significant improvement in the methods available to the wind turbine designer for understanding yaw loads and motions.

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