scholarly journals Reliability Assessment of Wind Turbines

2020 ◽  
Author(s):  
Mai F.M. Ayoub
Keyword(s):  
Wind Turbines ◽  
Reliability Assessment

Bayesian Networks in Electric Reliability Assessment of Doubly-Fed Wind Turbine Generator

2014 ◽  
Vol 494-495 ◽  
pp. 1791-1794 ◽  
Author(s):  
Hai Ning Pan ◽  
Ming Qin ◽  
Jun Zhang ◽  
Chao Chang ◽  
Pan Lei
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Reliability Assessment ◽  
Turbine Generator ◽  
Turbine Generators ◽  
Wind Turbine Generators ◽  
Reliability Methods ◽  
Doubly Fed ◽  
Electrical Components ◽  
Large Wind

For the development of large wind turbines, the approach of trial and error is also not adequate for mass produced wind turbines, a reliability-concerned manufacturing must be involved for the future development. An approach which introduces probabilistic reliability assessment which incorporates reliability methods into wind turbine engineering is described. Fault Tree of wind turbine generators electrical components is firstly built. Then it is transformed to the Bayesian network and probabilistic distribution is preceded using Markov chain Monte Carlo inference. Finally a set of qualitative and quantitative reliability is given according to a specific probabilistic input.

scholarly journals Reliability assessment of the hydraulic system of wind turbines based on load-sharing using survival signature

2020 ◽  
Vol 153 ◽  
pp. 766-776 ◽  
Author(s):  
Yao Li ◽  
Frank P.A. Coolen ◽  
Caichao Zhu ◽  
Jianjun Tan
Keyword(s):  
Wind Turbines ◽  
Hydraulic System ◽  
Reliability Assessment ◽  
Load Sharing

scholarly journals Time-dependent reliability analysis of wind turbines considering load-sharing using fault tree analysis and Markov chains

2019 ◽  
Vol 233 (6) ◽  
pp. 1074-1085 ◽  
Author(s):  
Yao Li ◽  
Frank PA Coolen
Keyword(s):  
Wind Turbines ◽  
System Reliability ◽  
Service Providers ◽  
Fault Tree ◽  
Reliability Assessment ◽  
Fault Tree Analysis ◽  
Cost Effective ◽  
Load Sharing ◽  
Tree Analysis ◽  
Critical Components

Due to the high failure rates and the high cost of operation and maintenance of wind turbines, not only manufacturers but also service providers try many ways to improve the reliability of some critical components and subsystems. In reality, redundancy design is commonly used to improve the reliability of critical components and subsystems. The load dependencies and failure dependencies among redundancy components and subsystems are crucial to the reliability assessment of wind turbines. However, the redundancy components are treated as a parallel system, and the load correlations among them are ignored in much literature, which may lead to the wrong system’s reliability and much higher costs. For this reason, this article explores the influences of load-sharing on system reliability. The whole system’s reliability is quantitatively evaluated using fault tree analysis and the Markov-chain method. Following this, the optimisation of the redundancy allocation problem considering the load-sharing is conducted to maximise the system reliability and reduce the total cost of the system subjecting to the available system cost and space. The results produced by this methodology can show a realistic reliability assessment of the entire wind turbine from a quantitative point of view. The realistic reliability assessment can help to design a cost-effective and more reliable system and significantly reduce the cost of wind turbines.

scholarly journals Multi-hazard reliability assessment of offshore wind turbines

Wind Energy ◽  
2014 ◽  
Vol 18 (8) ◽  
pp. 1433-1450 ◽  
Author(s):  
Maryam Mardfekri ◽  
Paolo Gardoni
Keyword(s):  
Wind Turbines ◽  
Reliability Assessment ◽  
Offshore Wind ◽  
Offshore Wind Turbines
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