Developing an Exhaustive Optimal Maintenance Schedule for Offshore Wind Turbines Based on Risk-Assessment, Technical Factors and Cost-Effective Evaluation

2021 ◽  
Author(s):  
Tuyet Thi Anh Nguyen ◽  
Shuo-Yan Chou ◽  
Hui-Kuang Yu
Keyword(s):  
Risk Assessment ◽  
Wind Turbines ◽  
Cost Effective ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Maintenance Schedule ◽  
Effective Evaluation ◽  
Optimal Maintenance ◽  
Technical Factors

Substructure Flexibility and Member-Level Load Capabilities for Floating Offshore Wind Turbines in OpenFAST

2019 ◽  
Author(s):  
Jason M. Jonkman ◽  
Rick R. Damiani ◽  
Emmanuel S. P. Branlard ◽  
Matthew Hall ◽  
Amy N. Robertson ◽  
...  
Keyword(s):  
Rigid Body ◽  
Wind Turbines ◽  
Cost Effective ◽  
Offshore Wind ◽  
Functional Requirements ◽  
Global Response ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines ◽  
Load Analysis ◽  
Source Physics

Abstract OpenFAST is an open-source, physics-based engineering tool applicable to the load analysis of land-based and offshore wind turbines, including floating offshore wind turbines. The substructure for a floating wind turbine has historically been modeled in OpenFAST as a rigid body with hydrodynamic loads lumped at a point, which enabled the tool to predict the global response of the floating substructure but not the structural loads within its individual members. This limitation is an impediment to designing floating substructures — especially newer designs that are more streamlined, flexible, and cost-effective. This paper presents the development plan of new capabilities in OpenFAST to model floating substructure flexibility and member-level loads, including the functional requirements and modeling approaches needed to understand and apply them correctly.

scholarly journals Optimal maintenance system for offshore wind turbines

2010 ◽  
Vol 1 (08) ◽  
pp. 339-343 ◽  
Author(s):  
M. Pérez ◽  
E. García ◽  
F. Morant ◽  
A. Correcher ◽  
E. Quiles
Keyword(s):  
Wind Turbines ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Maintenance System ◽  
Optimal Maintenance

The Reduced-Draft Spar: A Novel Cost-Effective Concept for Floating Offshore Wind Turbines

2019 ◽  
Author(s):  
Santiago de Guzmán ◽  
Miguel Jesús Taboada ◽  
Albino Pombo ◽  
Rafael Martín ◽  
Ana Bezunartea ◽  
...  
Keyword(s):  
Wind Turbines ◽  
Cost Effective ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines

Hurricane risk assessment of offshore wind turbines

2018 ◽  
Vol 125 ◽  
pp. 234-249 ◽  
Author(s):  
Spencer T. Hallowell ◽  
Andrew T. Myers ◽  
Sanjay R. Arwade ◽  
Weichiang Pang ◽  
Prashant Rawal ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Wind Turbines ◽  
Offshore Wind ◽  
Offshore Wind Turbines ◽  
Hurricane Risk

scholarly journals Global analysis of floating offshore wind turbines with shared mooring system

2021 ◽  
Vol 1201 (1) ◽  
pp. 012024
Author(s):  
H Munir ◽  
C F Lee ◽  
M C Ong
Keyword(s):  
Wind Turbines ◽  
Time Domain ◽  
Global Analysis ◽  
Cost Effective ◽  
Offshore Wind ◽  
Mooring Line ◽  
Mooring System ◽  
Offshore Wind Turbines ◽  
Floating Offshore Wind Turbines ◽  
Restoring Stiffness

Abstract Floating wind turbines (FWTs) with shared mooring systems can be one of the most cost- effective solutions in reducing mooring costs. First, the static configuration of a shared line is estimated using the elastic catenary equation. The present study investigates the global responses of two FWT with a shared mooring system. Two shared mooring configurations with different horizontal distances between the FWTs are considered. In the first configuration, the FWTs are placed 750m apart; and in the second configuration, they are placed 1000m apart. Two different environmental conditions (ECs) are used to simulate the global responses of the system in time domain. The shared mooring line results in higher extreme motions in surge and sway (degree of freedoms) DOFs due to the reduction of mooring restoring stiffness. The lower mooring restoring stiffness can be attributed to the reduction of one seabed anchoring point for each FWT as compared to a single FWT with three anchors installed. In the rotational DOFs, the shared mooring line configurations result in slight mean offset in each direction and significant increase in the motion standard deviations. This is caused by the reduced mooring stiffness associated with the change in platform orientation.

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