IET Renewable Power Generation最新文献

Impact of using text classifiers for standardising maintenance data of wind turbines on reliability calculations 使用文本分类器规范风力涡轮机维护数据对可靠性计算的影响

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-11-07 DOI: 10.1049/rpg2.13151

Julia Walgern, Katharina Beckh, Neele Hannes, Martin Horn, Marc-Alexander Lutz, Katharina Fischer, Athanasios Kolios

{"title":"Impact of using text classifiers for standardising maintenance data of wind turbines on reliability calculations","authors":"Julia Walgern, Katharina Beckh, Neele Hannes, Martin Horn, Marc-Alexander Lutz, Katharina Fischer, Athanasios Kolios","doi":"10.1049/rpg2.13151","DOIUrl":"https://doi.org/10.1049/rpg2.13151","url":null,"abstract":"This study delves into the challenge of efficiently digitalising wind turbine maintenance data, traditionally hindered by non-standardised formats necessitating manual, expert intervention. Highlighting the discrepancies in past reliability studies based on different key performance indicators (KPIs), the paper underscores the importance of consistent standards, like RDS-PP, for maintenance data categorisation. Leveraging on established digitalisation workflows, we investigate the efficacy of text classifiers in automating the categorisation process against conventional manual labelling. Results indicate that while classifiers exhibit high performance for specific datasets, their general applicability across diverse wind farms is limited at the present stage. Furthermore, differences in failure rate KPIs derived from manual versus classifier-processed data reveal uncertainties in both methods. The study suggests that enhanced clarity in maintenance reporting and refined designation systems can lead to more accurate KPIs.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3463-3479"},"PeriodicalIF":2.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal spatial arrangement of modules for large-scale photovoltaic farms in complex topography 复杂地形下大型光伏农场模块的最佳空间布局

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-11-05 DOI: 10.1049/rpg2.13150

Xu Tai, Hanlin Ru, Fei Wu, Wanbing Zhao, Yifan Ding, Qiang Yang

{"title":"Optimal spatial arrangement of modules for large-scale photovoltaic farms in complex topography","authors":"Xu Tai, Hanlin Ru, Fei Wu, Wanbing Zhao, Yifan Ding, Qiang Yang","doi":"10.1049/rpg2.13150","DOIUrl":"https://doi.org/10.1049/rpg2.13150","url":null,"abstract":"The existing methods for determining the module arrangement in photovoltaic (PV) farms are considered insufficient as they are generally limited to the environment of flat ground without considering both physical and electrical factors. The orientations of PV modules may be very diverse when installed in places with complex topography, e.g. mountains and abandoned mine sites. Thus, the received irradiance by the modules is inconsistent directly results in current differences and hence leads to significant mismatch loss in the PV arrays. This paper proposes a solution to determine the most appropriate combination of tilts and orientations of PV modules as well as the arrangement of PV arrays. The complex topographies are fully considered to minimize the mismatch loss phenomenon, and hence the power generation degradation. The solution adopts a set of models, i.e. the irradiation model for the calculation of optimal module tilts and orientations, the shadow model for shadow effect analysis, and the mismatch model for mismatch condition analysis. A two-layer multi-objective optimization is implemented for the optimal arrangement. The proposed solution is assessed through the case study of a 30 MW PV farm. The result confirms the effectiveness of the proposed solution for the optimal spatial module placement.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3452-3462"},"PeriodicalIF":2.6,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wind speed probabilistic forecast based wind turbine selection and siting for urban environment 基于风速概率预测的城市环境风力涡轮机选型与选址

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-11-03 DOI: 10.1049/rpg2.13132

Shivangi Sachar, Shubham Shubham, Piotr Doerffer, Anton Ianakiev, Paweł Flaszyński

{"title":"Wind speed probabilistic forecast based wind turbine selection and siting for urban environment","authors":"Shivangi Sachar, Shubham Shubham, Piotr Doerffer, Anton Ianakiev, Paweł Flaszyński","doi":"10.1049/rpg2.13132","DOIUrl":"https://doi.org/10.1049/rpg2.13132","url":null,"abstract":"Wind energy being a free source of energy is becoming popular over the past decades and is being studied extensively. Integration of wind turbines is now being expanded to urban and offshore settings in contrast to the conventional wind farms in relatively open areas. The direct installation of wind turbines poses a potential risk, as it may result in financial losses in scenarios characterized by inadequate wind resource availability. Therefore, wind energy availability analysis in such urban environments is a necessity. This research paper presents an in-depth investigation conducted to predict the exploitable wind energy at four distinct locations within Nottingham, United Kingdom. Subsequently, the most suitable location, Clifton Campus at Nottingham Trent University, is identified where a comprehensive comparative analysis of power generation from eleven different wind turbine models is performed. The findings derived from this analysis suggest that the QR6 wind turbine emerges as the optimal choice for subsequent experimental investigations to be conducted in partnership with Nottingham Trent University. Furthermore, this study explores the selection of an appropriate probability density function for assessing wind potential considering seven different distributions namely, Gamma, Weibull, Rayleigh, Log-normal, Genextreme, Gumbel, and Normal. Ultimately, the Weibull probability distribution is selected, and various methodologies are employed to estimate its parameters, which are then ranked using statistical assessments.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3285-3300"},"PeriodicalIF":2.6,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13132","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: A novel prediction method for low wind output processes under very few samples based on improved W-DCGAN 封面：基于改进型 W-DCGAN 的样本极少情况下低风力输出过程的新型预测方法

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-30 DOI: 10.1049/rpg2.13146

Shihua Liu, Han Wang, Weiye Song, Shuang Han, Jie Yan, Yongqian Liu

引用次数: 0

Identification of transmission line voltage sag sources based on multi-location information convolutional transformer 基于多位置信息卷积变压器的输电线路电压骤降源识别

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-28 DOI: 10.1049/rpg2.13092

Qionglin Li, Chen Zheng, Shuming Liu, Shuangyin Dai, Bo Zhang, Yuzheng Tang, Yi Wang

{"title":"Identification of transmission line voltage sag sources based on multi-location information convolutional transformer","authors":"Qionglin Li, Chen Zheng, Shuming Liu, Shuangyin Dai, Bo Zhang, Yuzheng Tang, Yi Wang","doi":"10.1049/rpg2.13092","DOIUrl":"https://doi.org/10.1049/rpg2.13092","url":null,"abstract":"Conventional methods for identifying voltage sag sources are difficult to categorize accurately due to the complexity of transmission lines and the influence of noise. In order to solve the problem of difficulty in recognizing voltage sag sources of transmission lines under different locations, this paper proposes a new method for transmission line fault diagnosis based on modified wavelet denoising and multi-location information convolution transformer. The improved wavelet denoising method proposed in this paper solves the problems of discontinuity and bias of the traditional wavelet denoising method, and is able to better reconstruct the original voltage signal in a strong noise environment. In addition, multi-location information convolution transformer adopts a new model combining multi-location information convolution and multi-scale convolution transformer, which realizes the combination of global information and local context information capturing ability under multi-location faults. This paper validates the method through simulation experiments and practical situations, and the results show that the method can well classify and identify the type and location of voltage sag sources in transmission lines.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3239-3252"},"PeriodicalIF":2.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of active impedance characteristics and harmonic deterioration of multiple grid connected inverters considering nonlinear factors 考虑非线性因素的多并网逆变器有功阻抗特性和谐波劣化分析

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-27 DOI: 10.1049/rpg2.13147

Jianwen Li, Shanshan Song, Rong Li, Wei Sun

{"title":"Analysis of active impedance characteristics and harmonic deterioration of multiple grid connected inverters considering nonlinear factors","authors":"Jianwen Li, Shanshan Song, Rong Li, Wei Sun","doi":"10.1049/rpg2.13147","DOIUrl":"https://doi.org/10.1049/rpg2.13147","url":null,"abstract":"The harmonic problems caused by non-linear factors of the grid connected inverter (GCI) system are more complicated, including both non-characteristic harmonics emitted by the dead-time and the changes in harmonic impedance characteristics. Harmonics interact with the changing impedance, and even cause harmonic amplification and resonance. The harmonic deterioration of the multiple GCIs system is serious. To analyse the mechanism and way of harmonic deterioration in grid-connected system caused by nonlinear factors, the active impedance models of single inverter and multiple GCIs system including dead-time effect and digital control delay are established first. In view of this, the influence mechanism of non-linear factors on system stability is explored. The improved modal analysis method is used to traverse the network series parallel resonance caused by nonlinear factors. The results show that both the dead-time effect and digital control delay reduce phase margin of the system, resulting in the resonant frequency shift and the resonant peak increase. When the harmonic excitation source interacts with the complex network under the influence of nonlinear factors, it will lead to further deterioration of harmonics. Finally, based on the MATLAB and RT-LAB hardware-in-the-loop simulation platforms, a multiple GCIs system model is built to verify the correctness of the established active impedance model and harmonic deterioration analysis.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3429-3442"},"PeriodicalIF":2.6,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13147","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent parking lot power management: Augmented epsilon-constraint concept with correlation analysis 智能停车场电源管理：相关分析的增量ε-约束概念

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-24 DOI: 10.1049/rpg2.13143

Seyyed Mostafa Nosratabadi, Ali Peivand, Amin Saadat

{"title":"Intelligent parking lot power management: Augmented epsilon-constraint concept with correlation analysis","authors":"Seyyed Mostafa Nosratabadi, Ali Peivand, Amin Saadat","doi":"10.1049/rpg2.13143","DOIUrl":"https://doi.org/10.1049/rpg2.13143","url":null,"abstract":"This paper addresses essential aspects of decision-making and management in energy resources. To achieve this, a tri-objective model is proposed that seeks to find the best solution within the basic constraints framework of the optimization problem so that all three proposed objective functions can approach their ideal point. The uncertainty is used for the photovoltaic and wind power plants’ output in the proposed multi-objective optimization problem as a scenario-based stochastic approach. The proposed objective functions are realizing the operating cost, the amount of emission produced by generation resources, the amount of load-shedding, and the maximum participation of responsive demands in the management program. The idea of employing plug-in electric vehicle (PHEV) units in the form of intelligent parking lots within the network is also included in the proposed study, which can increase network flexibility and help improve the main features of the network. A modified IEEE 83-bus test system is used to ensure the accuracy and effectiveness of the proposed model. The properties of PHEVs significantly affect the simulation results and compensate for the uncertainty associated with renewable energy sources. Randomly considering the parameters of PHEVs can also realistically bring the results of power management more realistic. In addition, the multi-objective problem defined for each scenario is solved by the augmented epsilon-constraint method with the correlation coefficient concept for the network under study, and the Pareto front curves are obtained separately and the best solution is extracted by a proper decision-making method.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3378-3404"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13143","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On adaptive resilient secondary control for DC microgrids under false data injection attacks 论虚假数据注入攻击下直流微电网的自适应弹性二次控制

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-24 DOI: 10.1049/rpg2.13144

Shahab Tawan, Yazdan Batmani, Qobad Shafiee, Charalambos Konstantinou

{"title":"On adaptive resilient secondary control for DC microgrids under false data injection attacks","authors":"Shahab Tawan, Yazdan Batmani, Qobad Shafiee, Charalambos Konstantinou","doi":"10.1049/rpg2.13144","DOIUrl":"https://doi.org/10.1049/rpg2.13144","url":null,"abstract":"Distributed cooperative control strategies for DC microgrids have been rapidly evolving in recent years. However, introducing a cyber layer to enhance robustness, scalability, and reliability also exposes the system to potential cyber-attacks. The damage inflicted by such attacks on the system performance can be catastrophic, reaching a point where it may devastate the system normal operation. By using model reference adaptive control (MRAC), this article proposes a resilient approach that does not require an accurate model of the system and despite the uncertainties for detecting false data injections into the reference DC voltage and simultaneously mitigating their adverse effects on the system stability and performance. The proposed technique employs an observer to detect possible false data injections in an online manner. By emulating the behavior of an ideal reference model, the MRAC ensures adaptive adjustments of the control parameters over time to mitigate the negative effects of potential attacks effectively and despite non-idealities such as measurement noise, parameter variations, and environmental changes in DC microgrids, the MRAC effectively manages false data injection attacks. Simulation studies are conducted using diverse scenarios involving a three-node DC microgrid to show the effectiveness of the proposed method.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3405-3415"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An optimal parameter design method for cascaded H-bridge multi-level converter in wind farm 风电场中级联 H 桥多电平转换器的优化参数设计方法

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-24 DOI: 10.1049/rpg2.13148

Huagen Xiao, Yongxi Zhang

引用次数: 0

Dynamic modelling and equilibrium manifold of multi-converter systems: A study on grid-forming and grid-following converters in renewable energy power plants 多变流器系统的动态建模和平衡流形：关于可再生能源发电厂中并网和跟网变流器的研究

IF 2.6 4区工程技术

IET Renewable Power Generation Pub Date : 2024-10-23 DOI: 10.1049/rpg2.13103

Ziqian Zhang, Robert Schuerhuber, Lothar Fickert, Guochu Chen

{"title":"Dynamic modelling and equilibrium manifold of multi-converter systems: A study on grid-forming and grid-following converters in renewable energy power plants","authors":"Ziqian Zhang, Robert Schuerhuber, Lothar Fickert, Guochu Chen","doi":"10.1049/rpg2.13103","DOIUrl":"https://doi.org/10.1049/rpg2.13103","url":null,"abstract":"This study explores the optimal balance between grid-forming (GFM) and grid-following (GFL) converter capacities within power stations to ensure stable operations. The investigation introduces a novel, generic modelling approach for analysing multiple converter systems in the wind and photovoltaic power plants. The method aims to elucidate the dynamic characteristics of the converters in power plants, particularly focusing on the continuity and existence of the equilibrium manifolds and their impact on system stability. Findings reveal a pronounced difference in the recovery capabilities of GFM and GFL following synchronization losses, highlighting an asymmetry in their abilities. Specifically, GFL converters exhibit more effectiveness in reinstating synchrony after synchronization losses caused by GFM. Conversely, GFM demonstrates a lesser capacity to recover from synchronization losses induced by GFL. Furthermore, analysis indicates that when the capacity ratio of GFL to the system's short-circuit capacity significantly exceeds that of GFM (exceeding a 1:5 ratio), the system experiences an absence of a stable equilibrium point, thereby affecting the synchronization stability of GFM. These conclusions have been validated through joint controller hardware-in-the-loop testing.","PeriodicalId":55000,"journal":{"name":"IET Renewable Power Generation","volume":"18 15","pages":"3253-3267"},"PeriodicalIF":2.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/rpg2.13103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0