Iet Science Measurement & Technology最新文献_第7页

Application status and development trend of intelligent sensor technology in the electric power industry 智能传感器技术在电力行业的应用现状和发展趋势

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2024-01-16 DOI: 10.1049/smt2.12175

Peng Li, Youping Fan, Zhong Liu, Bing Tian, Zhiming Wang, Dongjie Li, Zixi Han, Zhaoyi Zhang, Feng Xiong

{"title":"Application status and development trend of intelligent sensor technology in the electric power industry","authors":"Peng Li, Youping Fan, Zhong Liu, Bing Tian, Zhiming Wang, Dongjie Li, Zixi Han, Zhaoyi Zhang, Feng Xiong","doi":"10.1049/smt2.12175","DOIUrl":"10.1049/smt2.12175","url":null,"abstract":"With the rapid development of digital technologies such as intelligent control and information communication, digitization has gradually become an inevitable trend to promote technology innovation and industrial upgrading for the power grid. As the basis of digital technology, digital sensing technology will gradually penetrate all aspects of the power system for comprehensive perception and high operational reliability. First, this article introduces the application status and technical requirements of power intelligent sensor technology in various aspects of the power system, including the generation, transmission, transformation, distribution, and consumption of electricity. Next, domestic and foreign scholars' latest research achievements in power sensing technology are described from three major aspects, that is, optical fiber sensing technology, MEMS sensing technology, and sensor self-powered technology. Finally, future challenges for the electric power intelligent sensors are discussed and an outlook of future widespread application in the clean, safe, and efficient digital power grid is provided.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 4","pages":"145-162"},"PeriodicalIF":1.4,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139618452","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

Pre-insertion resistors temperature prediction based on improved WOA-SVR 基于改进型 WOA-SVR 的插入前电阻器温度预测

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2024-01-13 DOI: 10.1049/smt2.12177

Honghe Dai, Site Mo, Haoxin Wang, Nan Yin, Songhai Fan, Bixiong Li

{"title":"Pre-insertion resistors temperature prediction based on improved WOA-SVR","authors":"Honghe Dai, Site Mo, Haoxin Wang, Nan Yin, Songhai Fan, Bixiong Li","doi":"10.1049/smt2.12177","DOIUrl":"10.1049/smt2.12177","url":null,"abstract":"The pre-insertion resistors (PIR) within high-voltage circuit breakers are critical components and warm up by generating Joule heat when an electric current flows through them. Elevated temperature can lead to temporary closure failure and, in severe cases, the rupture of PIR. To accurately predict the temperature of PIR, this study combines finite element simulation techniques with Support Vector Regression (SVR) optimized by an Improved Whale Optimization Algorithm (IWOA) approach. The IWOA includes Tent mapping, a convergence factor based on the sigmoid function, and the Ornstein–Uhlenbeck variation strategy. The IWOA-SVR model is compared with the SSA-SVR and WOA-SVR. The results reveal that the prediction accuracies of the IWOA-SVR model were 90.2% and 81.5% (above 100°C) in the ± 3°C temperature deviation range and 96.3% and 93.4% (above 100°C) in the ± 4°C temperature deviation range, surpassing the performance of the comparative models. This research demonstrates that the method proposed can realize the online monitoring of the temperature of the PIR, which can effectively prevent thermal faults PIR and provide a basis for the opening and closing of the circuit breaker within a short period.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 4","pages":"182-192"},"PeriodicalIF":1.4,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139536000","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

Condition assessment criteria evaluation of asymmetric aged and fully aged silicone rubber insulators based on leakage current harmonics 基于泄漏电流谐波的非对称老化和完全老化硅橡胶绝缘子的状态评估标准评价

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-12-28 DOI: 10.1049/smt2.12176

Mehdi Esmaieli, Masume Khodsuz, Hassan Nouri

{"title":"Condition assessment criteria evaluation of asymmetric aged and fully aged silicone rubber insulators based on leakage current harmonics","authors":"Mehdi Esmaieli, Masume Khodsuz, Hassan Nouri","doi":"10.1049/smt2.12176","DOIUrl":"10.1049/smt2.12176","url":null,"abstract":"The leakage current characteristic monitoring of transmission line insulators is considered a worthy technique for insulator state prediction. In this paper, the harmonic analysis of leakage current signals has been performed to analyze the composite insulator condition. Experimental studies of asymmetrically aged, fully aged, and virgin insulators have been conducted. The effects of different aging types, pollution, and humidity on leakage current components, such as harmonics and the phase differences with the applied voltage, have been investigated. The analysis of the results shows that the effect of asymmetric aging on leakage current components is non-linear, and this non-linearity increases with the degree of pollution. Also, the type of insulator aging can be determined by the ratio of the third- and fifth-order leakage current harmonics. For instance, the classification of insulators into virgin, asymmetrically aged, and fully aged can be determined by examining the corresponding value ranges of 0–0.5, 0.5–0.9, and > 0.9, respectively. Similarly, the phase difference values of < 15% and those > 15% indicate the clean and polluted operating conditions individually.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 4","pages":"163-181"},"PeriodicalIF":1.4,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12176","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150462","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

The effects of large round-off errors on the performance of control charts for the mean when the quality characteristic is normally distributed with a known variance 当质量特性呈正态分布且方差已知时，大四舍五入误差对均值控制图性能的影响

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-12-22 DOI: 10.1049/smt2.12171

Benson-Karhi Diamanta, Ben-David Michal, Levi Ofer, Schechtman Edna

{"title":"The effects of large round-off errors on the performance of control charts for the mean when the quality characteristic is normally distributed with a known variance","authors":"Benson-Karhi Diamanta, Ben-David Michal, Levi Ofer, Schechtman Edna","doi":"10.1049/smt2.12171","DOIUrl":"10.1049/smt2.12171","url":null,"abstract":"This research discusses the effects of large round-off errors on the performance of control charts for means when a process is normally distributed with a known variance and a fixed sample size. Quality control in practice uses control charts for means as a process monitoring tool, even when the data is significantly rounded. The objective of this research is to demonstrate how ignoring the round-off errors and using a standard Shewhart chart affects the quality control of a measured process. The first part of the research includes theoretical calculations for estimating the values of alpha and beta, relating to the unrounded data and the large-rounded data. For the rounded data, normality can no longer be assumed because the data is discrete; therefore, the multinomial distribution is used. The results show that given an in-control process, alpha indicates that false alarms are more frequent, whereas given an out-of-control process, the influence on beta is minor and inconsistent. For some rounding levels, there is a decline in the control chart performances, and in others, there is an improvement. In the second part, a simulation study is used to evaluate the performances of the control chart based on a single sample, checking whether the conclusion (reject or fail to reject) for a sample is consistent for rounded and unrounded data. The results of the simulation match the theoretical calculations.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 3","pages":"103-115"},"PeriodicalIF":1.4,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139163680","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

Asymmetric calibration method on a back-to-back double-loop differential magnetic field probe 背靠背双环差分磁场探头的非对称校准方法

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-12-13 DOI: 10.1049/smt2.12172

Xiao He, Lijuan Huang, Dezhi Zeng, Bo Hou, Yuan Chi, En Li

引用次数: 0

Analysis of leakage flux, losses, and temperature in large synchronous generator end zone under the multi-layer screen thickness based on novel iterative method 基于新型迭代法的多层滤网厚度下大型同步发电机端区漏磁通、损耗和温度分析

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-11-22 DOI: 10.1049/smt2.12161

Jichao Han, Jiayu Qiu, Mingxuan Teng, Haiming Qi, Baojun Ge

{"title":"Analysis of leakage flux, losses, and temperature in large synchronous generator end zone under the multi-layer screen thickness based on novel iterative method","authors":"Jichao Han, Jiayu Qiu, Mingxuan Teng, Haiming Qi, Baojun Ge","doi":"10.1049/smt2.12161","DOIUrl":"https://doi.org/10.1049/smt2.12161","url":null,"abstract":"The multi-layer screen is the key component in the large synchronous generator end zone. The leakage flux, losses, and temperature of end components are significantly affected by the thickness of multi-layer screen in the synchronous generator. To investigate the influence of multi-layer screen thickness on the end leakage flux, losses, and temperature in the synchronous generator end zone, 1407MVA nuclear power synchronous generator is studied. Three-dimensional transient electromagnetic field model of synchronous generator end zone is established. Three-dimensional transient electromagnetic field in the end zone of 1407MVA synchronous generator with the multi-layer screen is calculated based on the novel iterative method. The flux density of end components is compared and studied in the end zone under the variation of multi-layer screen thickness. Influence of the different thicknesses of multi-layer screen on the losses of the shield plate, screen, finger plate, and stator end core is researched. The losses of end components obtained from 3D end electromagnetic field calculation are applied to the end zone as the heat source in the three-dimensional fluid and thermal coupled field. The temperature distribution of the end components is determined. The accuracy of the calculated results is validated by the experimental values.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 1","pages":"1-11"},"PeriodicalIF":1.4,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139101148","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

Rolling bearing weak fault detection using transient structure-optimal VMD and adaptive group sparse coding 利用瞬态结构优化 VMD 和自适应群稀疏编码检测滚动轴承薄弱故障

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-11-16 DOI: 10.1049/smt2.12170

Xing Yuan, Hui Liu, Huijie Zhang

{"title":"Rolling bearing weak fault detection using transient structure-optimal VMD and adaptive group sparse coding","authors":"Xing Yuan, Hui Liu, Huijie Zhang","doi":"10.1049/smt2.12170","DOIUrl":"10.1049/smt2.12170","url":null,"abstract":"Rolling bearings are essential parts in machine equipment and detecting damage in the early stage is crucial for ensuring the safe production and machine life. However, it is difficult to extract weak fault features under strong background noise, discrete harmonic frequency interference and non-stationary service conditions. This investigation proposes a hybrid fault diagnosis approach utilizing transient structure-optimal variational mode decomposition (TS-OVMD) and adaptive group sparse coding (AGSC) for addressing the formidable problem. According to the singular value structure between transient signal and the interference signal, this work investigates the singular value shrinkage (SVS) technique to adaptively obtain the independent components number. Then, we present a transient structure measure (TSM) to adaptively optimize the balance factor. This measure index systematically quantifies the typical characteristics of the bearing fault signal, which can maximize the fault information representation and effectively reduces the useful information loss caused by improper selection of VMD parameters. Finally, a sparse coding model called AGSC is furthermore designed to enhance the fault impulses readability and suppress residual noise based on the sparsity within group property and the TSM. The proposed approach is verified using experimental data and is found to be superiority comparison with the state-of-the-art method.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 2","pages":"86-102"},"PeriodicalIF":1.4,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139268800","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

Design of a multiparameter data acquisition and control system for in situ seabed observation base stations 为原位海底观测基站设计多参数数据采集和控制系统

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-11-14 DOI: 10.1049/smt2.12169

Chao Zhong, Jing'an Lu, Dongju Kang, Qianyong Liang

{"title":"Design of a multiparameter data acquisition and control system for in situ seabed observation base stations","authors":"Chao Zhong, Jing'an Lu, Dongju Kang, Qianyong Liang","doi":"10.1049/smt2.12169","DOIUrl":"10.1049/smt2.12169","url":null,"abstract":"With the exploration, development, and research of deep-sea resources, there is an urgent need for long-term and continuous observation data of the deep-sea seabed boundary layer. The traditional method of deep-sea seabed survey and sampling based on scientific research vessels has the discontinuity of observation data in space and time scales. There are some problems in the seabed in situ observation method based on the seabed observation network for low mobility and high operation and maintenance costs, restricting the in-depth understanding of the dynamic change process of the deep-sea floor. To solve the above problems, an open and modular data acquisition control system was designed based on an embedded system and signal processing technology. In terms of the physical, chemical, geological, and ecosystem characteristics of the seafloor or near the seafloor boundary layer, various functional sensors and instrumentation were matched to form an independent underwater integrated measurement or experimental device, eventually realizing in situ multiparameter and long-time series observations of the seafloor. The system data acquisition and control test were completed through laboratory experiments, which verified the feasibility of the system design. The research showed important theoretical and technical reference significance for the exploration and development of resources in the submarine boundary layer and the promotion of deep-sea scientific research.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 1","pages":"33-47"},"PeriodicalIF":1.4,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134954086","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

Equivalent transmission line characterization and multi-layer material measurement analysis of the signal conversion process in the pulsed electro-acoustic method 脉冲电声法信号转换过程的等效传输线特性分析和多层材料测量分析

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-11-13 DOI: 10.1049/smt2.12168

Hanwen Ren, Siyang Zhao, Jian Mu, Haoyu Gao, Tianrun Qi, Zhiyun Han, Zhihui Li, Qingmin Li

{"title":"Equivalent transmission line characterization and multi-layer material measurement analysis of the signal conversion process in the pulsed electro-acoustic method","authors":"Hanwen Ren, Siyang Zhao, Jian Mu, Haoyu Gao, Tianrun Qi, Zhiyun Han, Zhihui Li, Qingmin Li","doi":"10.1049/smt2.12168","DOIUrl":"10.1049/smt2.12168","url":null,"abstract":"This paper studies the equivalent transmission line model of the pulsed electro-acoustic (PEA) method with its applications. Based on the consistency of acoustic wave behaviour inside lossy acoustic materials and voltage wave propagation in transmission line, an equivalent simulation model of the PEA system is developed, whose reliability is verified by the output from the transducer and amplifier models and the comparison with measured waveforms. For the problem of acoustic impedance mismatch between different modules, simulation indicates that the unequal impedances of semiconducting electrode and sample can affect the amplitude of the measured signal at the upper electrode side, and the reflected acoustic waves caused by the transducer can affect the charge waveform. Further simulation for multi-layer materials finds that the reflected acoustic waves of different samples and sound absorbing module can superimpose on the charge signal. Accordingly, a selection criterion is proposed to avoid the effect of the reflected waves at the interface. As for the acoustic reflection caused by internal charge, it needs to be dealt with sequentially in calibration process, starting from the result inside the sample near ground electrode. The research can provide a foundation for analyzing the acoustic properties of the PEA method.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 2","pages":"74-85"},"PeriodicalIF":1.4,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136348432","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

Intensity modulation of UV light in gas sensor array to discriminate several analytes at room temperature 气体传感器阵列中的紫外光强度调制，用于在室温下分辨多种分析物

IF 1.4 4区工程技术

Iet Science Measurement & Technology Pub Date : 2023-10-28 DOI: 10.1049/smt2.12167

Ahmad Reza Sadredini, Alireza Nikfarjam, Mohsen Naeimi Pour, Niloofar Nazeri

{"title":"Intensity modulation of UV light in gas sensor array to discriminate several analytes at room temperature","authors":"Ahmad Reza Sadredini, Alireza Nikfarjam, Mohsen Naeimi Pour, Niloofar Nazeri","doi":"10.1049/smt2.12167","DOIUrl":"10.1049/smt2.12167","url":null,"abstract":"In this study, a gas sensor array along with intensity modulation of UV light was utilized to discriminate several gases at room temperature. The sensor array was consisted of two interdigitated microelectrodes and TiO2 nanofibres were electrospun on them and calcined at 540°C for 90 min. One of these sensors was coated by 2-nm Pt using the DC sputtering method and the other one remained uncoated. In each experiment, the sensor array was located at a distance of 30 mm from a 365-nm UV LED. For intensity modulation of UV light, a staircase waveform voltage was applied to the UV LED. The voltage was included of three voltage steps and the measured powers at a distance of 30 mm from the UV-LED were about 450, 560, and 680 µW/cm2, respectively. Analytes including acetone, ethanol, methanol, 2-propanol, and carbon monoxide (CO) at various concentrations ranging from 50 to 500 ppm were examined. Three-dimensional Principal Component Analysis mapping was successfully used for the segregation of all examined gases. The examinations revealed that using sensor array along with intensity modulation of UV light is an effective method for discrimination of several analytes at room temperature.","PeriodicalId":54999,"journal":{"name":"Iet Science Measurement & Technology","volume":"18 2","pages":"65-73"},"PeriodicalIF":1.4,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/smt2.12167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136233254","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