Volume 11: Wind Energy最新文献

Effect of Surface Corrugations on Laminar and Transitional Flows 表面波纹对层流和过渡流的影响

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-81910

Ishita Jain, S. Sarkar

引用次数: 0

Condition Monitoring of Wind Turbines Based on Anomaly Detection Using Deep Support Vector Data Description 基于深度支持向量数据描述异常检测的风力发电机组状态监测

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82624

Dandan Peng, Chenyu Liu, W. Desmet, K. Gryllias

{"title":"Condition Monitoring of Wind Turbines Based on Anomaly Detection Using Deep Support Vector Data Description","authors":"Dandan Peng, Chenyu Liu, W. Desmet, K. Gryllias","doi":"10.1115/gt2022-82624","DOIUrl":"https://doi.org/10.1115/gt2022-82624","url":null,"abstract":"\u0000 Wind turbine condition monitoring is considered as a key task in wind power industry. A plethora of methodologies based on machine learning have been proposed but the absence of faulty data, at the amount and the variety needed, still set limitations. Therefore Anomaly Detection methodologies are proposed as alternatives for fault detection. Deep learning tools have been introduced in the research field of wind turbines’ monitoring for the purpose of higher detection accuracy. In this work, a deep learning-based anomaly detection method, the Deep Support Vector Data Description (Deep SVDD), is proposed for the monitoring of wind turbines. Compared to the classic SVDD anomaly detection approach, this method combines a deep network, more specifically a Convolutional Neural Network (CNN), with the SVDD detector in order to automatically extract effective features. To test and validate the effectiveness of the proposed method, the Deep SVDD method is applied on SCADA data from a real wind turbine use case, targeting to the ice detection on wind turbine blades. The experimental results show that the method can effectively detect the generation of ice on wind turbines’ blades with a successful detection rate of 91.45%.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123583513","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

Effects of the Surge Motion on the Performance of Floating Wind Turbine Considering Blade Structural Flexibility 考虑叶片结构柔性的浮式风力机喘振运动对性能的影响

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82264

Le Zhou, X. Shen, Jiajia Chen, F. Yin, Z. Du

引用次数: 0

Optimization of the Traveling Time of Construction Crews to Minimize the Time to Operation of a Wind Farm 优化施工人员的出行时间以减少风电场的运行时间

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-83454

L. Ferrari, G. F. Frate, Francesca Leanza, Gian Lorenzo Giuliattini Burbui

{"title":"Optimization of the Traveling Time of Construction Crews to Minimize the Time to Operation of a Wind Farm","authors":"L. Ferrari, G. F. Frate, Francesca Leanza, Gian Lorenzo Giuliattini Burbui","doi":"10.1115/gt2022-83454","DOIUrl":"https://doi.org/10.1115/gt2022-83454","url":null,"abstract":"\u0000 Building a wind farm is a long and critical process. Many operations have to be arranged in sequence to complete and put in operation a wind farm. Typically, a wind farm is located in an exposed site, with a reduced accessibility and a limited interconnections between machines. The number of crews operating in parallel on the plant is a crucial parameter. By increasing the number of teams, the time to operation decreases but the overall commissioning cost increases. The strategy adopted to schedule the building operations can have an impact on this balance. An optimized sequence may keep the time to operation low but still limiting the number of crews involved. In this study, an optimization procedure based on a genetic algorithm was used for the minimization of the construction time of a wind farm of 200 MW selected as a case study. The problem was solved by considering an approach inspired to the Multiple Travelling Salesman Problem. An increasing number of crews was also considered to find the tradeoff between time and cost. The comparison between the results of the optimization process and those of a more traditional approach showed the benefits of an optimized approach to the problem both in terms of time to operation and costs. In particular, in the case study analyzed, a saving of almost 24% of the erection and installation time (around 280k$) was achieved only by optimizing the routes followed by the construction crews.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116148065","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

Computational Modeling of the Effects of Rain on Wind Turbine Performance 降雨对风力机性能影响的计算模型

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82500

Aishwerya Gahlot, L. Sankar, Auraluck Pichitkul

{"title":"Computational Modeling of the Effects of Rain on Wind Turbine Performance","authors":"Aishwerya Gahlot, L. Sankar, Auraluck Pichitkul","doi":"10.1115/gt2022-82500","DOIUrl":"https://doi.org/10.1115/gt2022-82500","url":null,"abstract":"\u0000 Wind turbines often operate under misty or rainy conditions. There is a considerable body of experimental evidence on the adverse effects of rain on wind turbine power production. Physical understanding of these effects, guided by quantitative modeling, is necessary to fully understand the effects of rain power production. This work presents an application of a two-way coupled computational fluid dynamics approach to the modeling of the effects of rain on airfoil and rotor performance. The aerodynamics is modeled by solving the Reynolds averaged Navier-Stokes equations with a suitable turbulence model. The droplet transport is modeled using an Eulerian approach that allows droplets of different diameters to be treated as individual/independent species, although all the studies presented here were for specified droplet sizes. The external flow exerts a drag force on the water droplets, and a reaction force is exerted by the droplets on the airflow.\u0000 2-D viscous flow simulations are presented for a representative wind turbine airfoil for several angles of attack under wet and dry conditions. Regression fits of these drag polars have been used in a combined blade element-momentum analysis for the NREL Phase VI rotor. The calculations indicate a loss of 30% to 40% in power production, attributable to rain, over a range of wind speeds.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122875631","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 Study on the Performance of Hybrid Darrieus-Savonius Vertical Axis Wind Turbines Having Twisted Blades 叶片扭曲的Darrieus-Savonius混合型垂直轴风力机性能的数值研究

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-80201

A. Saad, Mahmoud A. Ahmed

{"title":"Numerical Study on the Performance of Hybrid Darrieus-Savonius Vertical Axis Wind Turbines Having Twisted Blades","authors":"A. Saad, Mahmoud A. Ahmed","doi":"10.1115/gt2022-80201","DOIUrl":"https://doi.org/10.1115/gt2022-80201","url":null,"abstract":"\u0000 Darrieus and Savonius rotors are the main types of vertical axis wind turbines. Darrieus rotors exhibit high power coefficient but suffer from lower self-starting capabilities. On the other hand, Savonius rotors demonstrate relatively high self-starting capabilities but with an inferior power coefficient. Therefore, the current study proposes three hybrid Darrieus-Savonius designs with different angles of twisting aiming at having a compact turbine with high coefficient of power and easy to self-start. The Savonius turbine is placed inside the Darrieus turbine in the three proposed hybrid designs. Accordingly, the trends of coefficient of power against ratio of rotor tip speed in addition to coefficient of torque over a whole cycle (360 degrees) are computed. The coefficient of static torque during a whole cycle is also calculated. Therefore, three dimensional, incompressible, and unsteady Reynolds-Average Navier-Stokes equations in conjunction with the turbulence model of k-ω shear-stress transport is developed and numerically simulated utilizing ANSYS Fluent. The devolved numerical model is validated using the available measurements from literature. The predicted characteristics of flow field over the three suggested hybrid designs are analyzed and presented.\u0000 Accordingly, results illustrated that a significant enhancement of the coefficient of power is attained by suggested hybrid designs with twisting blades in comparison with the straight-bladed design. The model with twisted-bladed Darrieus and Savonius turbines with angles of twisting of 90° and 45°, respectively attains the largest peak of coefficient of power of 0.353. This hybrid configuration exhibits lower static torque fluctuations with positive values during the whole cycle. Consequently, using the suggested hybrid turbine with twisting blades improves both coefficient of power and the self-starting capability of the turbine.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129264156","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

Impact of Post-Stall Extrapolation and Rotational-Augmentation Models on the Performance of Stall-Controlled Wind Turbines 失速后外推和旋转增强模型对失速控制风力机性能的影响

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82268

F. Papi, A. Nocentini, P. F. Melani, A. Bianchini

{"title":"Impact of Post-Stall Extrapolation and Rotational-Augmentation Models on the Performance of Stall-Controlled Wind Turbines","authors":"F. Papi, A. Nocentini, P. F. Melani, A. Bianchini","doi":"10.1115/gt2022-82268","DOIUrl":"https://doi.org/10.1115/gt2022-82268","url":null,"abstract":"\u0000 While most wind energy comes today from utility-scale machines, small wind turbines SWTs can still play a role in off-grid installations or in the context of distributed production and smart energy systems. Due to cost reasons, SWTs (especially up to 100kW) are usually controlled via progressive stall of the blades. Accurate airfoils polars are therefore key in engineering simulation models, not only to ensure predictive blade performance, but are also pivotal for proper controller tuning and an effective evaluation of loads. This study presents an analysis on the impact of post-stall extrapolation methods for airfoil polars, combined with the rotational-augmentation correction, on the aero-servo-elastic simulation of a stall-controlled wind turbine. The selected test case is the UNIFI 50kW RWT, a 50kW reference turbine recently developed by Università degli Studi di Firenze. Aero-servo-elastic simulations are carried out with the open-source code OpenFAST by NREL considering typical turbine Design Situations. Several post-stall extrapolation methods are tested on the same set of polars, also including the 3D correction. Results prove that the performance of turbines like the one studied here is strongly dependent on these methods, especially after the needed correction for rotational-augmentation is applied. In this view, dedicated studies and experimental validations in the next future could help increase the predictivity of low-order numerical models, establish new engineering best-practices, and finally increase the economic feasibility of small wind turbines.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124048688","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: 1

Powering Telecommunication Towers Using Vertical Axis Wind Turbines: A Feasibility Study in Saudi Arabia 利用垂直轴风力涡轮机为电信塔供电:沙特阿拉伯的可行性研究

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82770

Z. Toor, H. Bahaidarah, S. Rehman

{"title":"Powering Telecommunication Towers Using Vertical Axis Wind Turbines: A Feasibility Study in Saudi Arabia","authors":"Z. Toor, H. Bahaidarah, S. Rehman","doi":"10.1115/gt2022-82770","DOIUrl":"https://doi.org/10.1115/gt2022-82770","url":null,"abstract":"\u0000 This paper presents a road map to select and integrate an existing off-the-shelf Vertical Axis Wind Turbine (VAWT) for telecommunication towers. A comprehensive feasibility analysis is performed based on technical, economic, and greenhouse gas (GHG) emission reduction factors. More than 80% of these towers have a maximum power requirement of less than 3.5 kW. Hence, the study is conducted for wind turbines with 10 kW rated power. Four commercially available VAWTs are selected and analyzed at two locations within Dhahran using hourly wind data recorded between 2019 and 2020. The study found that the best wind turbine has a capacity factor of 18.7% and 19.1% for these sites at 10 m hub height, and the capacity factor increases to 21.6% and 22.3% at 50 m hub height. Similarly, the specific yield of the turbine also increases from 137 to 263 kWh/m2 as the hub height is increased from 10 m to 50 m. Economic analysis revealed that the best wind turbine results in 15,043 kWh of energy exported to the tower leading to 7.2 years’ payback period. Emissions analysis for the best case reduces the GHG emissions by 83%, which amounts to 23.3 tons of CO2.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126841585","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

Mooring System Design and Analysis for a Floating Offshore Wind Turbine in Pantelleria panteleria浮式海上风力发电机系泊系统设计与分析

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-83219

A. Ghigo, F. Niosi, B. Paduano, G. Bracco, G. Mattiazzo

引用次数: 0

Parametric Design of Radial Guide Vanes for Power Augmentation of Darrieus-Type Vertical-Axis Wind Turbines 达里厄式垂直轴风力机增功率径向导叶参数化设计

Volume 11: Wind Energy Pub Date : 2022-06-13 DOI: 10.1115/gt2022-82867

P. F. Melani, F. Balduzzi, G. Ferrara, A. Bianchini, R. Bissanti, Palmiro Bissanti

{"title":"Parametric Design of Radial Guide Vanes for Power Augmentation of Darrieus-Type Vertical-Axis Wind Turbines","authors":"P. F. Melani, F. Balduzzi, G. Ferrara, A. Bianchini, R. Bissanti, Palmiro Bissanti","doi":"10.1115/gt2022-82867","DOIUrl":"https://doi.org/10.1115/gt2022-82867","url":null,"abstract":"\u0000 Among proposed solutions for power augmentation of Darrieus turbines, one of the most promising is represented by Radial Guide Vanes (RGVs) which can potentially increase both the velocity magnitude and the swirl of the incoming flow, without losing omni-directionality like in the case of diffusers. The main drawback of this technology is the increase in the dimension of the wind energy converter, which however comes together with reasonable cost (only static parts are added) and additional benefits like a higher safety and lower noise.\u0000 The study presents an extensive parametric analysis aimed at investigating the impact of some key design parameters of a RGV cascade on the performance of a medium-size industrial Darrieus rotor. Focus is given to vanes angle and length. Simulations are carried out by means of the two-dimensional Actuator Line Model developed by some of the authors for the commercial ANSYS® FLUENT® 20.2 solver. The hybrid simulation approach has been validated against blade-resolved unsteady CFD RANS simulations of the machine in both open- and vaned-rotor configurations. The use of high-fidelity techniques comes indeed with a non-negligible calculation cost, but it can solely provide the needed accuracy in modeling the physics related to the interaction of the flow with both static and rotating blades. Different turbine operating points and inlet flow angles are considered, so that the effective omni-directionality of the RGV concept could be verified. Tested configurations are compared in terms of power coefficient and blade loading azimuthal profile. Overall, results prove that — if the correct design is chosen — RGVs can provide notable improvements in the performance of a Darrieus VAWT, opening interesting prospects for their future application in industrial installation.","PeriodicalId":336848,"journal":{"name":"Volume 11: Wind Energy","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125273724","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