Wind Energy最新文献_第2页

On the use of secondary rotors for vertical axis wind turbine power take‐off 关于在垂直轴风力涡轮机功率起飞中使用二级转子

Wind Energy Pub Date : 2024-02-18 DOI: 10.1002/we.2901

Laurence Morgan, William Leithead, James Carroll

引用次数: 0

Impact of yaw misalignment on turbine loads in the presence of wind farm blockage 风场遮挡时偏航失准对风机载荷的影响

Wind Energy Pub Date : 2024-02-17 DOI: 10.1002/we.2899

F. Bernardoni, M. Rotea, Stefano Leonardi

{"title":"Impact of yaw misalignment on turbine loads in the presence of wind farm blockage","authors":"F. Bernardoni, M. Rotea, Stefano Leonardi","doi":"10.1002/we.2899","DOIUrl":"https://doi.org/10.1002/we.2899","url":null,"abstract":"Wake steering is very effective in optimizing the power production of an array of turbines aligned with the wind direction. However, the wind farm behaves as a porous obstacle for the incoming flow, inducing a secondary flow in the lateral direction and a reduction of the upstream wind speed. This is normally referred to as blockage effect. Little is known on how the blockage and the secondary flow influence the loads on the turbines when an intentional yaw misalignment is applied to steer the wake. In this work, we assess the variation of the loads on a virtual 4 by 4 array of turbines with intentional yaw misalignment under different levels of turbulence intensity. We estimate the upstream distance at which the incoming wind is influenced by the wind farm, and we determine the wind farm blockage effect on the loads. In presence of low turbulence intensity in the incoming flow, the application of yaw misalignment was found to induce a significant increase of damage equivalent load (DEL) mainly in the most downstream row of turbines. We also found that the sign (positive or negative) of the yaw misalignment affects differently the dynamic loads and the DEL on the turbines. Thus, it is important to consider both the power production and the blade fatigue loads to evaluate the benefits of intentional yaw misalignment control especially in conditions with low turbulence intensity upstream of the wind farm.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"79 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Function of the turbo‐sail airfoil applied to the Darrieus wind turbine 应用于达里厄斯风力涡轮机的涡轮风帆翼面的功能

Wind Energy Pub Date : 2024-02-17 DOI: 10.1002/we.2897

Yoshimichi Ono, R. Sayama, Yuichi Murai, H. Park, Y. Tasaka

引用次数: 0

Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers 全农场界面疲劳载荷估算：基于加速度计的数据驱动方法

Wind Energy Pub Date : 2024-02-15 DOI: 10.1002/we.2888

Francisco de N Santos, N. Noppe, W. Weijtjens, C. Devriendt

{"title":"Farm‐wide interface fatigue loads estimation: A data‐driven approach based on accelerometers","authors":"Francisco de N Santos, N. Noppe, W. Weijtjens, C. Devriendt","doi":"10.1002/we.2888","DOIUrl":"https://doi.org/10.1002/we.2888","url":null,"abstract":"Fatigue has become a major consideration factor in modern offshore wind farms as optimized design codes, and a lack of lifetime reserve has made continuous fatigue life monitoring become an operational concern. In this contribution, we discuss a data‐driven methodology for farm‐wide tower‐transition piece fatigue load estimation. We specifically debate the employment of this methodology in a real‐world farm‐wide setting and the implications of continuous monitoring. With reliable nacelle‐installed accelerometer data at all locations, along with the customary 10‐min supervisory control and data acquisition (SCADA) statistics and three strain gauge‐instrumented 'fleet‐leaders', we discuss the value of two distinct approaches: use of either fleet‐leader or population‐based data for training a physics‐guided neural network model with a built‐in conservative bias, with the latter taking precedence. In the context of continuous monitoring, we touch on the importance of data imputation, working under the assumption that if data are missing, then its fatigue loads should be modeled as under idling. With this knowledge at hand, we analyzed the errors of the trained model over a period of 9 months, with monthly accumulated errors always kept below . A particular focus was given to performance under high loads, where higher errors were found. The cause for this error was identified as being inherent to the use of 10‐min statistics, but mitigation strategies have been identified. Finally, the farm‐wide results are presented on fatigue load estimation, which allowed to identify outliers, whose behavior we correlated with the operational conditions. Finally, the continuous data‐driven, population‐based approach here presented can serve as a springboard for further lifetime‐based decision‐making.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"26 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139962161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical analysis of a tethered‐buoy mooring system for a prototype floating wind farm 浮动风电场原型系留浮标系泊系统的数值分析

Wind Energy Pub Date : 2024-02-09 DOI: 10.1002/we.2898

Guodong Liang, Finn‐Christian Wickmann Hanssen, Karl Otto Merz, Zhiyu Jiang

{"title":"Numerical analysis of a tethered‐buoy mooring system for a prototype floating wind farm","authors":"Guodong Liang, Finn‐Christian Wickmann Hanssen, Karl Otto Merz, Zhiyu Jiang","doi":"10.1002/we.2898","DOIUrl":"https://doi.org/10.1002/we.2898","url":null,"abstract":"Conventional mooring systems contribute significantly to the cost of floating wind projects, and innovative solutions with cost‐saving potentials are desired. In the present paper, we investigate the fundamental dynamic behavior of an innovative tethered‐buoy mooring system for a prototype wind farm in which two spar floating offshore wind turbines (FOWTs) are moored to five submerged tethered buoys. Numerical decay tests are used to characterize the fundamental frequencies and oscillatory modes of the system. The influence of net buoyancy is established through a parametric study. Finally, the dynamic response of the tethered‐buoy mooring system is compared against two alternative shared mooring configurations with catenary mooring lines. Time‐domain simulations are carried out for one accidental scenario with a parked and an operational FOWT, and one extreme scenario with two parked FOWTs. The results show that net buoyancy has a significant influence on platform motions and mooring loads. Compared to alternative configurations with catenary mooring lines, the tethered‐buoy mooring system exhibits substantially lower mooring tension loads and practically eliminates the threat of snap events. The reduction in the maximum characteristic fairlead tension is up to 85%. The mean positional offset of the wind turbines in the loading direction is larger, up to 36% of the water depth, however, the relative motions are comparable. The mean distance between the FOWTs is even smaller for the tethered‐buoy system. With the application of dynamic inter‐array cables, the proposed tethered‐buoy system can be a promising mooring solution for floating offshore wind farms.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":" 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139788776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical analysis of a tethered‐buoy mooring system for a prototype floating wind farm 浮动风电场原型系留浮标系泊系统的数值分析

Wind Energy Pub Date : 2024-02-09 DOI: 10.1002/we.2898

Guodong Liang, Finn‐Christian Wickmann Hanssen, Karl Otto Merz, Zhiyu Jiang

{"title":"Numerical analysis of a tethered‐buoy mooring system for a prototype floating wind farm","authors":"Guodong Liang, Finn‐Christian Wickmann Hanssen, Karl Otto Merz, Zhiyu Jiang","doi":"10.1002/we.2898","DOIUrl":"https://doi.org/10.1002/we.2898","url":null,"abstract":"Conventional mooring systems contribute significantly to the cost of floating wind projects, and innovative solutions with cost‐saving potentials are desired. In the present paper, we investigate the fundamental dynamic behavior of an innovative tethered‐buoy mooring system for a prototype wind farm in which two spar floating offshore wind turbines (FOWTs) are moored to five submerged tethered buoys. Numerical decay tests are used to characterize the fundamental frequencies and oscillatory modes of the system. The influence of net buoyancy is established through a parametric study. Finally, the dynamic response of the tethered‐buoy mooring system is compared against two alternative shared mooring configurations with catenary mooring lines. Time‐domain simulations are carried out for one accidental scenario with a parked and an operational FOWT, and one extreme scenario with two parked FOWTs. The results show that net buoyancy has a significant influence on platform motions and mooring loads. Compared to alternative configurations with catenary mooring lines, the tethered‐buoy mooring system exhibits substantially lower mooring tension loads and practically eliminates the threat of snap events. The reduction in the maximum characteristic fairlead tension is up to 85%. The mean positional offset of the wind turbines in the loading direction is larger, up to 36% of the water depth, however, the relative motions are comparable. The mean distance between the FOWTs is even smaller for the tethered‐buoy system. With the application of dynamic inter‐array cables, the proposed tethered‐buoy system can be a promising mooring solution for floating offshore wind farms.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"266 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139848837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Which wind turbine types are needed in a cost‐optimal renewable energy system? 成本最优的可再生能源系统需要哪些类型的风力涡轮机？

Wind Energy Pub Date : 2024-02-07 DOI: 10.1002/we.2900

Henrik Hodel, L. Göransson, Peiyuan Chen, Ola Carlson

{"title":"Which wind turbine types are needed in a cost‐optimal renewable energy system?","authors":"Henrik Hodel, L. Göransson, Peiyuan Chen, Ola Carlson","doi":"10.1002/we.2900","DOIUrl":"https://doi.org/10.1002/we.2900","url":null,"abstract":"Previous research has indicated that wind power plants can be designed to have less‐variable power generation, thereby mitigating the drop in economic value that typically occurs at high wind power penetration rates. This study investigates the competitiveness of adapted turbine design and the interplay with other flexibility measures, such as batteries and hydrogen storage, for managing variations. The analysis covers seven turbine designs for onshore and offshore wind generation, with different specific power ratings and hub heights. Various flexibility measures (batteries, hydrogen storage and transmission expansion) are included in the optimization of investment and dispatch of the electricity system of northern Europe. Three driving forces for turbine design selection are identified: (1) lowest cost of electricity generation; (2) annual wind production per land area and (3) improved generation profile of wind power. The results show that in regions with good wind resources and limited availability of variation management, it is cost‐efficient to reduce the variability of wind power production by adapting the turbine design. This remains the case when variation management is available in the form of batteries, hydrogen storage and transmission system expansion. Moreover, it is more cost‐effective to improve variability by changing the specific power rating rather than the turbine hub height.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"25 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139795755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Which wind turbine types are needed in a cost‐optimal renewable energy system? 成本最优的可再生能源系统需要哪些类型的风力涡轮机？

Wind Energy Pub Date : 2024-02-07 DOI: 10.1002/we.2900

Henrik Hodel, L. Göransson, Peiyuan Chen, Ola Carlson

{"title":"Which wind turbine types are needed in a cost‐optimal renewable energy system?","authors":"Henrik Hodel, L. Göransson, Peiyuan Chen, Ola Carlson","doi":"10.1002/we.2900","DOIUrl":"https://doi.org/10.1002/we.2900","url":null,"abstract":"Previous research has indicated that wind power plants can be designed to have less‐variable power generation, thereby mitigating the drop in economic value that typically occurs at high wind power penetration rates. This study investigates the competitiveness of adapted turbine design and the interplay with other flexibility measures, such as batteries and hydrogen storage, for managing variations. The analysis covers seven turbine designs for onshore and offshore wind generation, with different specific power ratings and hub heights. Various flexibility measures (batteries, hydrogen storage and transmission expansion) are included in the optimization of investment and dispatch of the electricity system of northern Europe. Three driving forces for turbine design selection are identified: (1) lowest cost of electricity generation; (2) annual wind production per land area and (3) improved generation profile of wind power. The results show that in regions with good wind resources and limited availability of variation management, it is cost‐efficient to reduce the variability of wind power production by adapting the turbine design. This remains the case when variation management is available in the form of batteries, hydrogen storage and transmission system expansion. Moreover, it is more cost‐effective to improve variability by changing the specific power rating rather than the turbine hub height.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"67 2-4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139855609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new Wind Atlas to support the expansion of the Italian wind power fleet 新的风能地图集支持意大利风电机组的扩展

Wind Energy Pub Date : 2024-01-04 DOI: 10.1002/we.2890

S. Sperati, Stefano Alessandrini, Filippo D'Amico, Will Cheng, Christopher M. Rozoff, Riccardo Bonanno, M. Lacavalla, Martina Aiello, Davide Airoldi, Alessandro Amaranto, G. Decimi, Milena Angelina Vergata

{"title":"A new Wind Atlas to support the expansion of the Italian wind power fleet","authors":"S. Sperati, Stefano Alessandrini, Filippo D'Amico, Will Cheng, Christopher M. Rozoff, Riccardo Bonanno, M. Lacavalla, Martina Aiello, Davide Airoldi, Alessandro Amaranto, G. Decimi, Milena Angelina Vergata","doi":"10.1002/we.2890","DOIUrl":"https://doi.org/10.1002/we.2890","url":null,"abstract":"As a contribution to national strategic energy planning, recent developments in meteorological modeling and wind generation technologies have improved the representation of the spatio‐temporal features of wind. This paper describes an updated Italian Wind Atlas (Atlante EOLico ItaliANo [AEOLIAN]) released in the early 2000s. The objective of AEOLIAN is to guide future wind generation to accord with ambitious European greenhouse gas emission targets set for 2030 and 2050. AEOLIAN is the result of a collaboration effort between Ricerca sul Sistema Energetico (RSE) SpA and the National Center for Atmospheric Research (NCAR), which jointly developed a novel approach combining high‐resolution numerical weather modeling with the Analog Ensemble (AnEn) statistical technique. This paper uses dynamical model runs with hourly output for 1990–2019 with 4 km horizontal grid spacing. For 2015–2019, an inner grid nest with 1.33 km horizontal grid spacing is used. The AnEn is then employed to temporally extend the 5 years of high‐resolution runs back through 1990–2014 to create a 30‐year dataset for Italy and surrounding marine areas. A thorough verification is carried out using 104 observational stations homogeneously distributed throughout the territory. Compared with other state‐of‐the‐art products, AEOLIAN provides enhanced accuracy over complex terrain thanks to higher horizontal resolution and the assimilation of observational wind data over the domain, which result in a reduction of model bias on complex terrain and a better reconstruction of the wind distributions. Finally, a new WebGIS interface (https://atlanteeolico.rse-web.it/) to explore AEOLIAN data is described.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":"7 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139384523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling dynamic stall of an airfoil with vortex generators using a double‐wake panel model with viscous–inviscid interaction 利用粘性-粘性相互作用的双翼面板模型，对带有涡流发生器的机翼的动态失速进行建模

Wind Energy Pub Date : 2023-12-29 DOI: 10.1002/we.2889

Wei Yu, Lukas K. Bajarūnas, Alessandro Zanon, Carlos J. S. Ferreira

{"title":"Modeling dynamic stall of an airfoil with vortex generators using a double‐wake panel model with viscous–inviscid interaction","authors":"Wei Yu, Lukas K. Bajarūnas, Alessandro Zanon, Carlos J. S. Ferreira","doi":"10.1002/we.2889","DOIUrl":"https://doi.org/10.1002/we.2889","url":null,"abstract":"Vortex generators (VGs) have been widely applied to wind turbines thanks to their potential to increase aerodynamic performance. Due to the complex inflow perceived by a rotor and the proneness to flow separation, VGs on wind turbines usually experience highly unsteady flow. While there are models that exist to simulate the steady effects of VGs, we lack a fast and efficient tool to model the unsteady performance of airfoils equipped with VGs. This paper adopts an unsteady double‐wake panel model with viscous–inviscid interaction developed to simulate a vertical axis turbine in dynamic stall, adding the capability of predicting the dynamic aerodynamic performance of VG‐equipped airfoils. The results of a series of steady and unsteady cases of an airfoil with different VG configurations in various pitch motions in free and forced transition are verified against experimental data. Results show that the double wake model offers results with sufficient accuracy compared with experimental data to claim the model's validity in a preliminary evaluation of an airfoil's capability to prevent stall with VGs. A few limitations, including the accuracy in prediction the transition location, separation, and reattachment, have been identified for future development.","PeriodicalId":506912,"journal":{"name":"Wind Energy","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139143603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0