Genetic and Evolutionary Computing

Foundation Design for wind turbine

The combination of a wind turbine and fish cage (wind-fish) is able to solve the complex issue of power supply for deep-sea aquaculture. Nevertheless, the hydrodynamic coupling between the fish cage and the wind turbine foundation is increasingly complex, and there is little research on the related hydrodynamics. In this paper, the hydrodynamic research on the wind turbine foundation and fish cage structure is carried out using numerical simulation, in which the porous medium model is adopted to simulate the effects of the fish cage on the flow field. By analyzing the hydrodynamic characteristics of the combined structure of an offshore wind turbine and aquaculture cage under the action of regular waves, the load on both the cage in the combined structure and the wind turbine foundation, and the overall load on the combined structure of offshore wind turbine and cage are obtained. The effects of wave parameters, structural dimensions, cage submergence depth, and biological attachment on cage load, wind turbine foundation load, and overall load of the combined structure are analyzed. The results demonstrate that the wind turbine foundation is persistently the central part of the combined structure. The wave height, water depth, and degree of attachment of marine organisms all have different effects on the amplitude of the structural load. In contrast, the wave period, cage geometry, and cage submergence depth have no significant effects on the amplitude of the structural load. In addition to the water depth, other factors will affect the proportion of the load on the wind turbine foundation and the total load as well.

/pdf/study-of-the-interaction-between-regular-waves-and-a-wind-3mx96u03.pdf

Study of the Interaction between Regular Waves and a Wind-Fish Combined Structure

The type selection and design of the wind turbine foundation play a vital role in reducing the structure cost and guaranteeing the safety of the wind turbine operation. Using a new type of beam slab foundation as the research object, this study designs the prestressed anchor beam slab foundation, and optimizes the size of the former designing scheme by using Ansys finite element software, hope to be helpful for the relevant research and design reference.

Design and Research of Prestressed Anchor Wind Turbine Foundation

AbstractAiming at the problem that there are single characteristics and non-exquisite granularity for the existing key component state prediction methods of wind turbines, a wind turbine spindle fault state prediction model based on fusion structure is proposed. The model based on integration can more fully mine the information representation of wind turbine status. The Factorization Machine (FM) module is used to fine-tune the parameters of first-order and second-order features of the wind turbine. The Cross Network is used to perform a finite-order feature cross-product. The Deep Network module is combined to explore the advantages of high-order wind turbine feature information. The fusion structure model effectively fuses the features of the three modules. The influence of the high and low order features are fully considered to improve the fault state prediction effect of the model. In this paper, Area Under the Curve (AUC) and Log-likelihood Loss (Logloss) are used as evaluation indexes to verify the model's prediction performance in the real wind turbine data set of the SCADA system. The experimental results show that the spindle fault state prediction model based on the fusion structure has better performance than the traditional prediction model and the latest deep learning prediction model.KeywordsWind turbine spindleFusion structureNeural networkFault predictionHigh-order features 

Fusion Structure-based Fault State Prediction of Wind Turbine Spindle

As a significant bearing tower that is widely adopted in the electric transmission line, the angle tower is frequently found over-tilting in the inspection and maintenance of transmission lines. On the basis of the massive universal finite element software ANSYS, this study establishes a three-dimensional steel frame for the commonly used 500kV angle tower in the Inner Mongolian area, and analyzes the dynamic properties of angle towers while setting the base pre-tilting. It also conducts model analyses for the towers with or without base pre-tilting respectively, compares the frequency and mode of vibration, and paves way for further study of the setting of base pre-tilting and vibration response analysis.

The Influence of Base Pre-Tilting on the Dynamic Properties of Angle Towers

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Papers

Design and Research of Prestressed Anchor Wind Turbine Foundation

Fusion Structure-based Fault State Prediction of Wind Turbine Spindle

The Influence of Base Pre-Tilting on the Dynamic Properties of Angle Towers