Journal of Physics: Conference Series最新文献

Constrained synthetic wind fields from high-resolution 3D WindScanner measurements 从高分辨率 3D WindScanner 测量中得到的受约束合成风场

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/4/042036

Paul J. Meyer, Ashim Giyanani, J. Gottschall

{"title":"Constrained synthetic wind fields from high-resolution 3D WindScanner measurements","authors":"Paul J. Meyer, Ashim Giyanani, J. Gottschall","doi":"10.1088/1742-6596/2767/4/042036","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/4/042036","url":null,"abstract":"The limited spatial and temporal resolution of wind measurements within the inflow of a wind turbine requires statistical modeling of synthetic wind fields, integrating actual measurements or derived statistics along with selected turbulence models. The short-range WindScanner technology enhances atmospheric wind measurements with high resolution in both spatial and temporal dimensions. This contribution utilizes 3D turbulent inflow measurements from three synchronized WindScanner to generate synthetic turbulent wind fields. Both, mean wind field parameters and turbulent time series are analyzed, and different input configurations for the constrained wind field generation are evaluated. Our findings indicate the presence of periods characterized by dominant horizontal shear and veer events, with wind speed and direction differences up to 1.53 ms−1 or 8.45° across the rotor span. Additionally, the study reveals that the optimal measurement configuration for constrained turbulence modeling varies depending on the specific evaluated location and velocity component being analyzed. Another observation is that excessive constraints, placed too closely, may lead to overfitting, thereby diminishing the representativeness of the synthetic field for the lateral velocity component.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410847","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

Autonomous operation domain generation and reduction method supporting the seamless power supply of important loads 支持重要负载无缝供电的自主运行域生成和缩减方法

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2781/1/012027

Jinhui Zhou, Ke Wang, Jiabei Ge, Xu Xu, Hongmin Wu

{"title":"Autonomous operation domain generation and reduction method supporting the seamless power supply of important loads","authors":"Jinhui Zhou, Ke Wang, Jiabei Ge, Xu Xu, Hongmin Wu","doi":"10.1088/1742-6596/2781/1/012027","DOIUrl":"https://doi.org/10.1088/1742-6596/2781/1/012027","url":null,"abstract":"In order to fully and accurately perceive the security risks of the intelligent distribution network, an autonomous operation domain generation and reduction method to support the seamless power supply of important loads is proposed. This method first adopts the scenario analysis method to analyze the photovoltaic uncertainty, introduces the micro-phasor measurement units (µPMU) with real-time, synchronization, accuracy, and comprehensive measurement data, and builds the fault data set through the scenario of each fault type occurring in each node of the smart distribution network. By constructing the load loss risk index of the autonomous operation domain under the photovoltaic scenario and the seamless switching ability index under the fault state, the autonomous operation domain evaluation and screening method based on the Dynamic Time Warping (DTW) algorithm is proposed. Combined with the evaluation index system, the autonomous operation domain scenario under the fault state is evaluated. The simulation results prove that this method is enough to realize the reliable screening of the autonomous operation domain scene set in the fault state, and effectively support the seamless power supply of important loads and the seamless operation of the distribution network.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391541","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

Advancing weather predictions for offshore wind farm maintenance through deep learning 通过深度学习推进海上风电场维护的天气预测

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/9/092091

V. Dighe, Y. Liu

{"title":"Advancing weather predictions for offshore wind farm maintenance through deep learning","authors":"V. Dighe, Y. Liu","doi":"10.1088/1742-6596/2767/9/092091","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/9/092091","url":null,"abstract":"Historical met-ocean data are widely used in the decision support tools to evaluate different operations & maintenance (O&M) strategies for offshore wind energy. Although effective, they are often very limited, which may not be able to represent prolonged offshore weather conditions at the wind farm sites. This hinders their application to the O&M planning. In this paper, a deep learning approach is proposed to build up the stochastic weather generator, in which the long short-term memory neural network is leveraged to simulate wind and wave time series data. The neural network is trained using the (limited) historical met-ocean dataset to accurately capture the statistical characteristics of wind and wave conditions. The results demonstrate the effectiveness of the proposed stochastic weather generator in delivering both open-loop and closed-loop forecasting for wind speed and significant wave height data, thereby supporting both corrective and preventive maintenance activities. The case study reveals that the open-loop forecast excels in short-term hourly met-ocean parameter predictions, while the closed-loop forecast proficiently captures the met-ocean patterns within a predefined window. Although the closed-loop forecast for wave parameters generally follows the measurements trend, it diverges from the actual measurements; a discrepancy likely due to the complex spatial-temporal dynamics of waves not completely captured by the LSTM model. The proposed LSTM model, considered as a complementary but connected solution, is able to enhance the utility of the limited historical data in O&M planning.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391498","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

Restoration of Vector Magnetization Image from Vector Scanning-SQUID Microscope Measurement 从矢量扫描-SQUID 显微镜测量中还原矢量磁化图像

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2776/1/012001

Masahiko Hayashi, T. Ishida, H. Shishido, The Dang Vu, S. Kawamata

引用次数: 0

In-plane shear failure behavior and mechanical properties of SiC/SiC Composites 碳化硅/碳化硅复合材料的面内剪切破坏行为和机械性能

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2730/1/012026

Tianshan Li, Guoqiang Yu, Shihao Zhou, Zhikang Zheng, Xiguang Gao, Yingdong Song

引用次数: 0

The Underwater Berlin Research Turbine: A Wind Turbine Model for Wake Investigations in a Water Towing Tank 水下柏林研究涡轮机：用于水上拖曳槽波浪研究的风力涡轮机模型

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/4/042011

S. Krumbein, M. Jentzsch, J. Saverin, C. Nayeri, C. Paschereit

{"title":"The Underwater Berlin Research Turbine: A Wind Turbine Model for Wake Investigations in a Water Towing Tank","authors":"S. Krumbein, M. Jentzsch, J. Saverin, C. Nayeri, C. Paschereit","doi":"10.1088/1742-6596/2767/4/042011","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/4/042011","url":null,"abstract":"The design of a three-bladed horizontal axis research wind turbine for wake investigations is described. The turbine has a rotor diameter of 1.3 m and will be operated in a large water towing tank at a submergence depth of 2.5 m, yielding 3.3 % blockage. The test rig is configured to allow for underwater-stereo-particle-image-velocimetry measurements of the near and the far wake at chordwise Reynolds numbers approaching 700 000. The low-Reynolds number airfoil SG6040 is selected to constitute the rotor blades. Cavitation-free operation is assured by assigning a rated angle of attack of 1°. The blades are designed to maintain a constant circulation along the blade span and to minimize tip deflections. The blade pitch angles are adjustable. Various blade designs, with and without passive flow control devices, can be tested by replacing individual blade sections. This eliminates the need for multiple sets of blades. Sensors for acquiring the turbine’s thrust, torque, rotational speed, the azimuthal positions of the blades, and the imposed blade root bending moments are incorporated into the design. The wind turbine simulation suite QBlade is utilized to simulate the turbine characteristics. A model of the entire test rig is derived, representing its structural properties. Results from the analytical verification of the structural model are provided. QBlade is utilized to analyze the test rig design by imposing design loads and calculating the modal properties.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141413624","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

New methodology to estimate fatigue from acceleration time series experimentally validated in an onshore and floating offshore wind turbine 从加速度时间序列估算疲劳的新方法在陆上和浮动海上风力涡轮机中得到实验验证

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/3/032029

Francisco Pimenta, Gonçalo Mata, Filipe Magalhães

{"title":"New methodology to estimate fatigue from acceleration time series experimentally validated in an onshore and floating offshore wind turbine","authors":"Francisco Pimenta, Gonçalo Mata, Filipe Magalhães","doi":"10.1088/1742-6596/2767/3/032029","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/3/032029","url":null,"abstract":"In onshore wind turbines, the association of fatigue damage with the environmental conditions based on the wind field properties have already been shown to be effective. However, most of the predictive power of such approach is based on average results, being the informative power regarding a single event extremely reduced. In this paper, a new methodology based on a reduced order model where the tower top accelerations are explicitly taken into consideration is proposed, with the adequate adaptations for floating offshore and onshore applications. After a numerical validation of the model predictions using OpenFAST, the methodology is used to reconstruct the bending moments time series of both an onshore and a floating wind turbine that are currently being monitored with accelerometers and strain gauges. The existence of this experimental data allowed for a direct comparison of the accelerations based estimates with the values obtained from the strain gauges readings and the method was proven to reproduce with great accuracy the tower bending moments time series. This conclusion sustain the claim that the proposed methodology for fatigue estimation is more robust than conventional SCADA-driven approaches and more informative regarding each individual event, making it suitable to be used in real time decision making processes.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141404344","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

Edgewise Structural Damping of a 2.8-MW Land-Based Wind Turbine Rotor Blade 2.8 兆瓦陆基风力涡轮机叶片的边缘结构阻尼

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/2/022069

M. Chetan, P. Bortolotti

{"title":"Edgewise Structural Damping of a 2.8-MW Land-Based Wind Turbine Rotor Blade","authors":"M. Chetan, P. Bortolotti","doi":"10.1088/1742-6596/2767/2/022069","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/2/022069","url":null,"abstract":"Modern wind turbines push the predictive capabilities of state-of-the-art aero-servo-elastic tools. The existing limitations hide across the numerical tool chain and can result in serious issues, such as missing aeroelastic instabilities during the design phase. Structural damping is an input that is usually hard to estimate, but also has a major impact on the turbine behavior. In this paper, we discuss an experiment that aims to accurately quantify the structural damping characterizing the edgewise modes of modern wind turbine blades. The experiment is carried out on a 2.8-MW land-based wind turbine and features a fast yaw actuation that induces an edgewise motion on one of the three blades. The Covariant-subspace system identification (Cov-SSI) method is then used to post-process the blade root moment to estimate the short-term edgewise structural damping. Despite limitations of the Cov-SSI method, which consistently under-predicts the absolute values of damping, we observe that structural damping decreases across the first three blade edgewise modes, which is different from the stiffness-proportional damping model that assumes that structural damping increases with the modes. This paper argues that a stiffness-proportional damping model, which is implemented in most aeroelastic tools, is therefore not conservative and might hide aeroelastic instabilities that can instead appear in the field.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141404385","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

Lift-Induced Wake Re-Energization for a VAWT-Based Multi-Rotor System 基于 VAWT 的多转子系统的升力诱导唤醒装置

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/7/072012

T. J. Broertjes, D. Bensason, A. Sciacchitano, C. Ferreira

{"title":"Lift-Induced Wake Re-Energization for a VAWT-Based Multi-Rotor System","authors":"T. J. Broertjes, D. Bensason, A. Sciacchitano, C. Ferreira","doi":"10.1088/1742-6596/2767/7/072012","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/7/072012","url":null,"abstract":"This study explores the performance and near-wake dynamics of a VAWT-based Multi-Rotor System in both its original configuration and in the presence of external lift-generating devices, specifically employed for wake control operations. The wake of a scaled VAWT-based MRS was measured in a wind tunnel using Particle Tracking Velocimetry. Lift-generating devices, including a 3-element cascading wing on top and a single-element wing in the middle of the MRS, were used to enhance wake control and deflection. Measurements in the near-wake revealed notable differences between configurations with and without these devices. Without them, the wake remained concentrated in the actuator surface’s projected downstream area, with minimal crossflow diffusion. Conversely, the configuration with lift-generating devices exhibited significant wake deformation, including axial expansion and lateral contraction, promoting streamwise momentum recovery. As a result, increased power recovery was found downstream of such a system compared to the clean MRS. These findings underscore the potential of such systems, particularly when equipped with lift-generating devices, to manipulate wake dynamics and enhance wind farm efficiency, thereby advancing innovative wind energy solutions.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141406580","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

How do technological choices affect the economic and environmental performance of offshore wind farms? 技术选择如何影响海上风电场的经济和环境绩效？

Journal of Physics: Conference Series Pub Date : 2024-06-01 DOI: 10.1088/1742-6596/2767/8/082005

S. Kainz, A. Guilloré, C. Bottasso

{"title":"How do technological choices affect the economic and environmental performance of offshore wind farms?","authors":"S. Kainz, A. Guilloré, C. Bottasso","doi":"10.1088/1742-6596/2767/8/082005","DOIUrl":"https://doi.org/10.1088/1742-6596/2767/8/082005","url":null,"abstract":"The ongoing energy transition towards fully sustainable energy systems requires designing wind farms looking beyond the sole levelized cost of energy, in order to concurrently ensure not only the economic profitability but also the environmental friendliness of future plants. Within this new approach to design, it becomes necessary to understand the effects that various possible technological choices have on both the economic and the environmental performance of wind farms. This study presents a framework designed to support these coupled economic-environmental assessments. The capabilities of the code are showcased by analysing the impact of different choices in terms of support structure type, specific power, tower height, powertrain type, and array and export voltage level for an exemplary offshore farm, chosen here as the IEA Wind 740-10-MW Reference Offshore Wind Plant with irregular layout. While the effects of many technological choices on the cost of energy are already well understood by industry, the present analysis shows that — at least in this specific case — climate change impacts are mainly driven by steel production, due to the massive amount of required material, but also, interestingly, by vessel activities. A low specific power, tall towers, and a high export cable voltage appear to offer the greatest potential for the concurrent improvement of the environmental and economic performance of the plant.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141413100","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