Analysis of vibration monitoring data of an onshore wind turbine under different operational conditions

2020 ◽  
Vol 205 ◽  
pp. 110071 ◽  
Author(s):  
Yan Zhao ◽  
Jianing Pan ◽  
Zhuye Huang ◽  
Yachao Miao ◽  
Jianqun Jiang ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Vibration Monitoring ◽  
Monitoring Data ◽  
Onshore Wind ◽  
Operational Conditions

Field monitoring of the ground vibrations adjacent to an onshore wind turbine foundation

2020 ◽  
Author(s):  
Pengpeng He ◽  
Jesús González-Hurtado ◽  
Tim Newson ◽  
Hanping Hong ◽  
Melanie Postman ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Near Field ◽  
Wind Farms ◽  
Field Monitoring ◽  
Vibration Monitoring ◽  
Onshore Wind ◽  
Wind Structure ◽  
Soil Foundation ◽  
Non Gaussian ◽  
Fluctuating Wind

Investigations of the soil-foundation interaction behavior of wind turbine foundations and transfer of energy from the wind to the ground have not been reported in Canada. Indeed, very few vibration monitoring studies have been conducted globally around wind farms. It has been found that turbines predominantly produce vibrations related to structural resonances and blade passing frequencies. Energy is found to be modified with distance and is dominated by surface waves. This paper describes a study of the effect of the wind-structure interaction on the behaviour of a turbine foundation and the generation of ground-based vibrations around a working commercial wind turbine in Ontario. The field monitoring system and meteorological instrumentation are described in this paper and the responses of the structure and the surrounding ground due to the fluctuating wind-field are discussed. The spectral analysis shows that the higher frequency vibrations attenuate more rapidly than the lower frequency vibrations. The tilted elliptical particle motions are found to be non-Gaussian because of the non-Gaussian wind conditions. The response attenuation with distance indicates that both geometric and material attenuation may dominate the vibration attenuation in the near field and only geometric attenuation occurs in the far field.

scholarly journals Development of a digital twin of an onshore wind turbine using monitoring data

2020 ◽  
Vol 1618 ◽  
pp. 022065
Author(s):  
F Pimenta ◽  
J Pacheco ◽  
C M Branco ◽  
C M Teixeira ◽  
F Magalhães
Keyword(s):  
Wind Turbine ◽  
Monitoring Data ◽  
Onshore Wind ◽  
Digital Twin

scholarly journals Deterioration of cracks in onshore wind turbine foundations

2018 ◽  
Vol 167 ◽  
pp. 121-131 ◽  
Author(s):  
Jack McAlorum ◽  
Marcus Perry ◽  
Grzegorz Fusiek ◽  
Pawel Niewczas ◽  
Iain McKeeman ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Onshore Wind

Overview of Wind Turbine Field Failure Databases: A Discussion of the Requirements for an Analysis

2018 ◽  
Author(s):  
Roozbeh Bakhshi ◽  
Peter Sandborn
Keyword(s):  
Statistical Analysis ◽  
Wind Turbine ◽  
Wind Turbines ◽  
Wind Farms ◽  
Onshore Wind ◽  
Failure Times ◽  
Reliability Parameters ◽  
Failure Data ◽  
Offshore Installations ◽  
Field Failure

With renewable energy and wind energy in particular becoming mainstream means of energy production, the reliability aspect of wind turbines and their sub-assemblies has become a topic of interest for owners and manufacturers of wind turbines. Operation and Maintenance (O&M) costs account for more than 25% of total costs of onshore wind projects and these costs are even higher for offshore installations. Effective management of O&M costs depends on accurate failure prediction for turbine sub-assemblies. There are numerous models that predict failure times and O&M costs of wind farms. All these models have inputs in the form of reliability parameters. These parameters are usually generated by researchers using field failure data. There are several databases that report the failure data of operating wind turbines and researches use these failure data to generate the reliability parameters through various methods of statistical analysis. However, in order to perform the statistical analysis or use the results of the analysis, one must understand the underlying assumptions of the database along with information about the wind turbine population in the database such as their power rating, age, etc. In this work, we analyze the relevant assumptions and discuss what information is required from a database in order to improve the statistical analysis on wind turbines’ failure data.

Steel hybrid onshore wind towers installed with minimal effort: Development of lifting process

2018 ◽  
Vol 42 (4) ◽  
pp. 335-352 ◽  
Author(s):  
Mohammad Reza Shah Mohammadi ◽  
Carl Richter ◽  
Daniel Pak ◽  
Carlos Rebelo ◽  
Markus Feldmann
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Lattice Structure ◽  
Cost Component ◽  
Onshore Wind ◽  
Supporting Structure ◽  
Element Simulation ◽  
Connection Component ◽  
Minimal Effort ◽  
Relevant Cost

The total costs per produced kilowatt-hour for wind turbines depend significantly on the investment costs. Thereby, the tower is a relevant cost component, which depends on the chosen supporting structure, the material, and especially on the erection process. Here, an innovative erection process is presented in order to minimize the wind turbine installation, which leads to excluding the extra tall cranes for installing the wind turbines with hub heights over 180 m. In order to propose the innovative erection process, a new hybrid lattice/tubular supporting structure for the onshore wind turbines is designed. The connection component between the tubular part and lattice structure is proposed considering the support functionality for the new erection process. Furthermore, the building steps of the complete erection process are explained. The operational and the lifting loads on wind turbine supporting structure are estimated, and consequently, the erection process stages were analyzed. Finally, the finite element simulation are performed to specify the critical stresses in subcomponents of the supporting structure in each lifting stage and to show the feasibility of the erection process. Moreover, the most critical points and the stages are investigated and stress level in the supporting structure components is computed.

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