A new three-dimensional yaw wake model (3D_-yaw Jensen model) with a simple form and convenient calculation is proposed in this paper
aiming to reduce the power generation loss caused by the wake effect and achieve the yaw optimization strategy of wind farms. This model is improved on the basis of the 3D_ Jensen model
introducing the mass and momentum conservation theorems under yaw conditions. It comprehensively considers the impacts of various factors on the wake
such as incoming wind conditions
local geographical information
aerodynamic characteristics and operating conditions
and also takes into account the influence of the yaw effect on the wake center offset and wake wind speed distribution. The accuracy and universality of the model are verified comprehensively through actuator disk/large eddy simulation(AD/LES) numerical simulation and unmaned aerial vehide(UAV) field measurement examples. The results demonstrate that the new 3D_-yaw Jensen model accurately predicts the crosswind and vertical wake velocity distribution and its development pattern for different turbine types
incoming wind conditions
and yaw angle conditions. This paper provides a theoretical basis and technical support for the research on yaw optimization strategies of wind farms.
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references
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