Structural Reliability Analysis of Wind Turbines: A Review

Jiang, Zhiyu; Hu, Weifei; Dong, Wenbin; Gao, Zhen; Ren, Zhengru

doi:10.3390/en10122099

Cited by 95 publications

(47 citation statements)

References 113 publications

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“…MCS can be incorporated with variance reduction techniques, e.g., Latin hypercube sampling (LHS), weighted Latin hypercube sampling (WLHS), importance sampling, subset simulation, etc. [19,20,45,52].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Structural Reliability Assessment Methods for Offshore Wind Turbine Jacket Support Structures

et al. 2020

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Offshore wind turbines (OWTs) are deployed in harsh environments often characterized by highly stochastic loads and resistance properties, thus necessitating the need for structural reliability assessment (SRA) to account for such uncertainties systematically. In this work, the SRA of an OWT jacket-type support structure is conducted, applying two stochastic methods to predict the safety level of the structure considering various design constraints. The first method refers to a commercial finite element analysis (FEA) package (DesignXplorer© from ANSYS) which employs direct simulations and the six sigma analysis function applying Latin hypercube sampling (LHS) to predict the probability of failure. The second method develops a non-intrusive formulation which maps the response of the structure through a finite number of simulations to develop a response surface, and then employs first-order reliability methods (FORM) to evaluate the reliability index and, subsequently, the probability of failure. In this analysis, five design constraints were considered: stress, fatigue, deformation, buckling, and vibration. The two methods were applied to a baseline 10-MW OWT jacket-type support structure to identify critical components. The results revealed that, for the inherent stochastic conditions, the structural components can safely withstand such conditions, as the reliability index values were found acceptable when compared with allowable values from design standards. The reliability assessment results revealed that the fatigue performance is the design-driving criterion for structural components of OWT support structures. While there was good agreement in the safety index values predicted by both methods, a limitation of the direct simulation method is in its requirement for a prohibitively large number of simulations to estimate the very low probabilities of failure in the deformation and buckling constraint cases. This limitation can be overcome through the non-intrusive formulation presented in this work.

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Section: Introductionmentioning

confidence: 99%

Comparative Study of Structural Reliability Assessment Methods for Offshore Wind Turbine Jacket Support Structures

et al. 2020

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“…The rapid development of offshore wind farms has been noticed with a trend of continued increasing in turbine size. The favor of larger offshore wind turbines (OWTs) results in decreasing costs of installation and grid connection per unit energy produced [1]. This comes with new challenges in offshore OWT installation.…”

Section: Introductionmentioning

confidence: 99%

A Crane Overload Protection Controller for Blade Lifting Operation Based on Model Predictive Control

2018

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Lifting is a frequently used offshore operation. In this paper, a nonlinear model predictive control (NMPC) scheme is proposed to overcome the sudden peak tension and snap loads in the lifting wires caused by lifting speed changes in a wind turbine blade lifting operation. The objectives are to improve installation efficiency and ensure operational safety. A simplified three-dimensional crane-wire-blade model is adopted to design the optimal control algorithm. A crane winch servo motor is controlled by the NMPC controller. The direct multiple shooting approach is applied to solve the nonlinear programming problem. High-fidelity simulations of the lifting operations are implemented based on a turbulent wind field with the MarIn and CaSADi toolkit in MATLAB. By well-tuned weighting matrices, the NMPC controller is capable of preventing snap loads and axial peak tension, while ensuring efficient lifting operation. The performance is verified through a sensitivity study, compared with a typical PD controller.

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“…Kim and Lee demonstrated their approach by application to OWT and jacket-type support structures under extreme wind and ocean wave loads. Recently, Jiang et al[156] have provided a detailed overview of structural reliability analysis of wind turbines. Ziegler et al[157] developed an efficient frequency-domain method for sensitivity analysis of wave-induced fatigue loads on offshore wind turbine monopile foundations.…”

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confidence: 99%

Foundations of offshore wind turbines: A review

et al. 2019

Renewable and Sustainable Energy Reviews

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333

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Offshore wind is a source of clean, renewable energy of great potential value to the power industry in the context of a low carbon society. Rapid development of offshore wind energy depends on a good understanding of technical issues related to offshore wind turbines, which is spurring ongoing research and development programmes. Foundations of offshore wind turbines present one of the main challenges in offshore wind turbine design. This paper reviews the present state of knowledge concerning geotechnical and structural issues affecting foundation types under consideration for the support structures of offshore wind turbines, and provides recommendations for future research and development.

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Structural Reliability Analysis of Wind Turbines: A Review

Cited by 95 publications

References 113 publications

Comparative Study of Structural Reliability Assessment Methods for Offshore Wind Turbine Jacket Support Structures

Comparative Study of Structural Reliability Assessment Methods for Offshore Wind Turbine Jacket Support Structures

A Crane Overload Protection Controller for Blade Lifting Operation Based on Model Predictive Control

Foundations of offshore wind turbines: A review

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