IET Cyber-Physical Systems: Theory and Applications最新文献_第8页

Digital farming based on a smart and user-friendly IoT irrigation system: A conifer nursery case study 基于智能和用户友好型物联网灌溉系统的数字农业：针叶树苗圃案例研究

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-04-27 DOI: 10.1049/cps2.12054

Adrian Florea, Daniel-Ioan Popa, Daniel Morariu, Ionela Maniu, Lasse Berntzen, Ugo Fiore

{"title":"Digital farming based on a smart and user-friendly IoT irrigation system: A conifer nursery case study","authors":"Adrian Florea, Daniel-Ioan Popa, Daniel Morariu, Ionela Maniu, Lasse Berntzen, Ugo Fiore","doi":"10.1049/cps2.12054","DOIUrl":"10.1049/cps2.12054","url":null,"abstract":"Although digital technologies on farms bridge the productivity-sustainability gap, they are not yet widely adopted. Familiarising farmers with digital systems is as important as developing advanced technological platforms: As farmers become accustomed to and feel in control of digital systems, they will find it easier to accept, adapt and keep pace with technological developments. This article describes the design and implementation of a flexible, scalable, easy-to-use and extensible IoT embedded system to control sprinkler irrigation in an outdoor Thuja conifer nursery in an automated mode and under varying weather. Irrigation is controlled by Mamdani Fuzzy Inference Logic based on rainfall prediction and real-time monitoring of the plants. The IoT system provides a control dashboard and offers three operating modes: manual, automated or scheduled (daily, weekly, and monthly). The system is robust in the event of a power outage or loss of connectivity. The code is available on GitHub. Sensors, solenoid valves, Raspberry Pi microcontrollers, fuzzy logic systems, a web interface and a cloud service create a sustainable solution that makes water use more efficient, creates a healthy environment for crops (using just the right amount of water), makes life easier for farmers, and exposes them to the benefits of the IoT.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"9 2","pages":"150-168"},"PeriodicalIF":1.5,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72762867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-supervised pre-training in photovoltaic systems via supervisory control and data acquisition data 通过监控和数据采集数据对光伏系统进行自我监督预培训

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-04-27 DOI: 10.1049/cps2.12056

Dejun Wang, Zhenqing Duan, Wenbin Wang, Jingchun Chu, Qingru Cui, Runze Zhu, Yahui Cui, You Zhang, Zedong You

{"title":"Self-supervised pre-training in photovoltaic systems via supervisory control and data acquisition data","authors":"Dejun Wang, Zhenqing Duan, Wenbin Wang, Jingchun Chu, Qingru Cui, Runze Zhu, Yahui Cui, You Zhang, Zedong You","doi":"10.1049/cps2.12056","DOIUrl":"10.1049/cps2.12056","url":null,"abstract":"Owing to the availability of sensor data, the operation and maintenance (O&M) of sustainable energy systems have become more intelligent. In particular, data-driven approaches have gained growing interest in supporting intelligent O&M. However, this is not a simple task, as the deficiency of labelled data poses a major challenge. This work proposes a self-supervised pre-training approach for autonomous learning of the Supervisory Control and Data Acquisition (SCADA) data representations for photovoltaic (PV) systems. Specifically, the proposed method first constructs the sample pairs using reasonable assumptions from a large volume of unlabelled SCADA data. Then, it designs a deep Siamese network to extract the representations of the input sample pair and sets the pretext task to measure whether the input pair is similar. The proposed method has been deployed in a PV system with nominal power 2.5 MW located in North China. Experimental results show that the proposed approach achieves accurate similarity assessment for the sample pairs and can potentially support downstream tasks regarding intelligent O&M.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 4","pages":"272-279"},"PeriodicalIF":1.5,"publicationDate":"2023-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91061760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variational mode decomposition enabled temporal convolutional network model for state of charge estimation 用于电荷状态估计的变分模式分解时间卷积网络模型

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-04-20 DOI: 10.1049/cps2.12053

Zhaocheng Zhang, Tao Cai, Aote Yuan

引用次数: 0

Discrete-time modelling methodology of networked control systems under packet delay and dropout 分组时延和丢包情况下网络控制系统的离散时间建模方法

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-04-20 DOI: 10.1049/cps2.12050

Kamran Mohajeri, Ali Madadi, Babak Tavassoli, Wan Rahiman

{"title":"Discrete-time modelling methodology of networked control systems under packet delay and dropout","authors":"Kamran Mohajeri, Ali Madadi, Babak Tavassoli, Wan Rahiman","doi":"10.1049/cps2.12050","DOIUrl":"https://doi.org/10.1049/cps2.12050","url":null,"abstract":"Models and control techniques for networked control systems (NCSs) can be divided into continuous-time and discrete-time types. Unlike the continuous-time analysis, literature on discrete-time analysis and control of NCSs under packet delay and dropout shows a variety of different models. However, a systematic study of these models is absent in the literature. This article is a methodology for these models. Different factors involved in making this variety are discussed. The models are described and it is shown how they are different or related to each other. The models are from the existing literature. However, to complete the methodology some of the models are introduced by the authors. Furthermore, the concept of sequence matrix is introduced which helps to differentiate some models and should be considered when NCS is analysed as a switched linear system. This methodology can be used as a basis for selecting the suitable model in analysis and design of NCSs. Denial of service (DoS) attack and time delay switch (TDS) attack can be considered as packet dropout and packet delay respectively. Thus, this methodology can also be used in analysis and design of NCS under these cyber-physical attacks.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 3","pages":"131-148"},"PeriodicalIF":1.5,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12050","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50152576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Space vector pulse width modulation strategy for modular multilevel converters in power system 电力系统中模块化多电平变换器的空间矢量脉宽调制策略

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-04-18 DOI: 10.1049/cps2.12052

Shengyang Lu, Yan Zhenhong, Xiong Yongsheng, Zhang Jianhao, Wang Tong, Zhu Yu, Sui Yuqiu, Yang Junyou, Li Zhang, Haixin Wang

{"title":"Space vector pulse width modulation strategy for modular multilevel converters in power system","authors":"Shengyang Lu, Yan Zhenhong, Xiong Yongsheng, Zhang Jianhao, Wang Tong, Zhu Yu, Sui Yuqiu, Yang Junyou, Li Zhang, Haixin Wang","doi":"10.1049/cps2.12052","DOIUrl":"https://doi.org/10.1049/cps2.12052","url":null,"abstract":"As a superior modulation strategy, space vector pulse width modulation (SVPWM) provides redundant voltage vectors and adjustable action time, which can achieve multi-objective control of modular multilevel converter (MMC). An SVPWM strategy suitable for MMC is proposed. The strategy is divided into three stages. In the first stage, the appropriate voltage vector, the action time and the basic sub-module (SM) input number are quickly calculated to ensure the output quality by equating MMC as a 2-level inverter. In the second stage, a finite set of the circulating current suppression is established on the basis of the basic SM input number. The optimal SM input number is selected through rolling optimisation. In the last stage, according to the SM voltage sorting and the optimal SM input number, the optimal switching state is determined to realise the SM voltage balance control. The proposed control strategy simplifies the design of the control system, reduces the computational burden and can be easily extended to MMC with any SM number. The simulation and experimental results show that the proposed SVPWM strategy can reduce the circulating current and balance the SM capacitor voltage while ensuring the output quality.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 3","pages":"186-194"},"PeriodicalIF":1.5,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50145302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Inferring adversarial behaviour in cyber-physical power systems using a Bayesian attack graph approach 使用贝叶斯攻击图方法推断网络物理电力系统中的对抗行为

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-02-11 DOI: 10.1049/cps2.12047

Abhijeet Sahu, Katherine Davis

{"title":"Inferring adversarial behaviour in cyber-physical power systems using a Bayesian attack graph approach","authors":"Abhijeet Sahu, Katherine Davis","doi":"10.1049/cps2.12047","DOIUrl":"https://doi.org/10.1049/cps2.12047","url":null,"abstract":"Highly connected smart power systems are subject to increasing vulnerabilities and adversarial threats. Defenders need to proactively identify and defend new high-risk access paths of cyber intruders that target grid resilience. However, cyber-physical risk analysis and defense in power systems often requires making assumptions on adversary behaviour, and these assumptions can be wrong. Thus, this work examines the problem of inferring adversary behaviour in power systems to improve risk-based defense and detection. To achieve this, a Bayesian approach for inference of the Cyber-Adversarial Power System (Bayes-CAPS) is proposed that uses Bayesian networks (BNs) to define and solve the inference problem of adversarial movement in the grid infrastructure towards targets of physical impact. Specifically, BNs are used to compute conditional probabilities to queries, such as the probability of observing an event given a set of alerts. Bayes-CAPS builds initial Bayesian attack graphs for realistic power system cyber-physical models. These models are adaptable using collected data from the system under study. Then, Bayes-CAPS computes the posterior probabilities of the occurrence of a security breach event in power systems. Experiments are conducted that evaluate algorithms based on time complexity, accuracy and impact of evidence for different scales and densities of network. The performance is evaluated and compared for five realistic cyber-physical power system models of increasing size and complexities ranging from 8 to 300 substations based on computation and accuracy impacts.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 2","pages":"91-108"},"PeriodicalIF":1.5,"publicationDate":"2023-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50128539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

COVID-19 clinical medical relationship extraction based on MPNet 基于MPNet的新冠肺炎临床医学关系提取

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-02-09 DOI: 10.1049/cps2.12049

Su Qianmin, Pan Wei, Cai Xiaoqiong, Ling Hongxing, Huang Jihan

{"title":"COVID-19 clinical medical relationship extraction based on MPNet","authors":"Su Qianmin, Pan Wei, Cai Xiaoqiong, Ling Hongxing, Huang Jihan","doi":"10.1049/cps2.12049","DOIUrl":"https://doi.org/10.1049/cps2.12049","url":null,"abstract":"With the rapid development of biomedical research and information technology, the number of clinical medical literature has increased exponentially. At present, COVID-19 clinical text research has some problems, such as lack of corpus and poor annotation quality. In clinical medical literature, there are many medical related semantic relationships between entities. After the task of entity recognition, how to further extract the relationships between entities efficiently and accurately becomes very critical. In this study, a COVID-19 clinical trial data relationship extraction model based on deep learning method is proposed. The model adopts MPNet model, bidirectional-GRU (BiGRU) network, MAtt mechanism and Conditional Random Field inference layer integration architecture and improves the problem that static word vector cannot represent ambiguity through pre-trained language model. BiGRU network is used to replace the current Bi directional long short term memory structure and simplify the network structure of Long Short Term Memory to improve the training efficiency of the model. Through comparative experiments, the proposed method performs well in the COVID-19 clinical text entity relation extraction task.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 2","pages":"119-129"},"PeriodicalIF":1.5,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50126127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Partition decoupling model and method in power distribution network, part I: Optimised network partition model and process 配电网分区解耦模型与方法，第一部分：优化的网络分区模型与过程

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-01-12 DOI: 10.1049/cps2.12043

Wanxing Sheng

引用次数: 0

Partition decoupling model and method in power distribution network, part II: A novel partitioning optimisation operation method 配电网分区解耦模型与方法，第二部分：一种新的分区优化操作方法

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-01-12 DOI: 10.1049/cps2.12046

Wanxing Sheng

引用次数: 0

Feature extraction of arc high impedance grounding fault of low-voltage distribution lines based on Bayesian network optimisation algorithm 基于贝叶斯网络优化算法的低压配电线路电弧高阻抗接地故障特征提取

IF 1.5

IET Cyber-Physical Systems: Theory and Applications Pub Date : 2023-01-12 DOI: 10.1049/cps2.12048

Jing Sun

{"title":"Feature extraction of arc high impedance grounding fault of low-voltage distribution lines based on Bayesian network optimisation algorithm","authors":"Jing Sun","doi":"10.1049/cps2.12048","DOIUrl":"https://doi.org/10.1049/cps2.12048","url":null,"abstract":"In order to accurately extract the fault features of arc high impedance grounding of low-voltage distribution lines and judge the fault feature types of arc high impedance grounding of low-voltage distribution lines, a fault feature extraction method for arc high impedance grounding of low-voltage distribution lines based on Bayesian network optimisation algorithm is proposed. According to the model of arc high impedance grounding fault based on Thomson’s principle, the parameter information of each transmission signal in arc high impedance grounding fault is extracted. Through the denoising method of arc high impedance grounding signal based on combined filter, the noise information of transmission signal in case of arc high impedance grounding fault is removed and the signal purity is improved. The detection and recognition method for fault characteristics of arc high impedance grounding of low-voltage distribution lines based on Bayesian network optimisation algorithm is used to detect and judge the fault characteristics of the abnormal characteristics of the denoised transmission signal, and complete the fault feature extraction. After testing, this method can accurately and real-time extract the fault characteristics of arc high impedance grounding of low-voltage distribution lines, and has application value.","PeriodicalId":36881,"journal":{"name":"IET Cyber-Physical Systems: Theory and Applications","volume":"8 2","pages":"109-118"},"PeriodicalIF":1.5,"publicationDate":"2023-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/cps2.12048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50130201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0