IEEE Transactions on Dielectrics and Electrical Insulation最新文献_第5页

Influence of Gap Between Electrode and Ceramic on Breakdown Voltage Under Atmospheric Conditions 常压条件下电极与陶瓷间隙对击穿电压的影响

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-06 DOI: 10.1109/TDEI.2025.3526567

Ao Xu;Lin Yang;Yuanjie Shi

引用次数: 0

AC Pollution Flashover Characteristics on Patterned Hydrophilic-Hydrophobic Surface 图案化亲疏水表面的交流污染闪络特性

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-06 DOI: 10.1109/TDEI.2025.3526082

Bo Tao;Li Cheng;Shuo Zhang;Wenlong Xu;Ruijin Liao

{"title":"AC Pollution Flashover Characteristics on Patterned Hydrophilic-Hydrophobic Surface","authors":"Bo Tao;Li Cheng;Shuo Zhang;Wenlong Xu;Ruijin Liao","doi":"10.1109/TDEI.2025.3526082","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3526082","url":null,"abstract":"Applying room temperature vulcanizing (RTV) coating on the surfaces of glass and ceramic insulators is a widely employed strategy for antipollution flashover. RTV coating peeling off is the most prominent problem during operation. This study designs an RTV infused regular circular indentations embedded coating structure (ECS). This structure enhances the coating’s adhesion per unit area, thereby reducing the probability of peeling off. To investigate the feasibility of ECS application in outdoor insulation, this article conducts comprehensive hydrophobicity tests and artificial pollution tests. The findings reveal that the polluted ECS exhibits overall hydrophobicity, and its antipollution performance is 4.5% higher than that of RTV. Furthermore, this article discusses the ECS’s pollution flashover mechanism. In the initial stage, according to the FEA model of ECS’s pollution layer, the nonuniform electrical stress and current density are the reasons why ECS forms multiple dry bands. Meanwhile, multiple dry bands induce multiarcs properties similar to those of RTV surfaces. For the arc development stage, this article proposes a model for multiarcs development applicable to hydrophobic surfaces. Calculation results show that the minimum current required for ECS’s nearby arcs merging is 3.5% higher than that of RTV. Hence, the probability of developing from multiarcs to the complete flashover is lower. In summary, ECS holds the potential to become a new insulator structure, offering a long-term solution to pollution flashover issues.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 2","pages":"649-657"},"PeriodicalIF":2.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rethinking Shallow and Deep Learnings for Transformer Dissolved Gas Analysis: A Review 变压器溶解气体分析浅学习与深度学习的再思考

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-06 DOI: 10.1109/TDEI.2025.3526080

Hong Cai Chen;Yang Zhang

引用次数: 0

Sample Entropy as a Performance Indicator of UHF Real Signal Denoising From Partial Discharges 样本熵作为超高频真实信号局部放电去噪的性能指标

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-03 DOI: 10.1109/TDEI.2025.3525611

Jorge Alfredo Ardila-Rey;Omar Rivera-Caballero;Carlos Boya-Lara

{"title":"Sample Entropy as a Performance Indicator of UHF Real Signal Denoising From Partial Discharges","authors":"Jorge Alfredo Ardila-Rey;Omar Rivera-Caballero;Carlos Boya-Lara","doi":"10.1109/TDEI.2025.3525611","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3525611","url":null,"abstract":"Partial discharges (PDs) are generated by anomalies in the electrical insulating systems and are used to obtain information to help establish their health status. PDs generate electromagnetic emissions that can be detected by antennas in the ultrahigh-frequency (UHF) range but are affected by different types of noise, such as Gaussian or non-Gaussian. While techniques, such as wavelet transform (WT), multiscale principal component analysis (MSPCA), and variational mode decomposition (VMD), have shown effectiveness in noise reduction, choosing the most suitable one for specific real-world conditions remains challenging. Traditional indicators, such as the noise reduction ratio (NRR), rely on linear mixing assumptions with Gaussian noise, which may not always apply. This article introduces sample entropy (SE) as a more versatile and comprehensive performance metric, offering enhanced analytical capability across diverse conditions. This work validates SE utility through experiments with real UHF PD signals from two distinct laboratories in varied geographical locations, demonstrating its effectiveness as a superior indicator for technique selection in noise-afflicted environments.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 3","pages":"1333-1342"},"PeriodicalIF":2.9,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144213585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric Field Regulation of Post Insulators Based on Local SiC Doping 基于局部SiC掺杂的柱状绝缘子电场调节

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-03 DOI: 10.1109/TDEI.2025.3526089

Xiaoqing Xie;She Chen;Fangwei Liang;Xianhao Fan;Feng Wang;Lipeng Zhong;Qiuqin Sun

{"title":"Electric Field Regulation of Post Insulators Based on Local SiC Doping","authors":"Xiaoqing Xie;She Chen;Fangwei Liang;Xianhao Fan;Feng Wang;Lipeng Zhong;Qiuqin Sun","doi":"10.1109/TDEI.2025.3526089","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3526089","url":null,"abstract":"Electric field in the leg area of gas-insulated transmission line (GIL) tri-post insulators is relatively high, which results in epoxy (EP) being susceptible to aging. The operation life of insulators is shortened. This article aims to optimize the scheme of local SiC doping to improve the insulation reliability of post insulators. The dc electric field calculation model for SiC doping in the local area of insulators is constructed. The regulation of the concentration, thickness, and center height of the transition zone between different materials on the electric field is studied. The findings suggest that there is a polarity reversal phenomenon in the surface charge of the transition zone after SiC doping. Besides, the negative peak of the surface charge density increases with doping concentration. As the thickness rises to 9 mm, the tangential electric field distribution of the transition zone becomes more homogeneous. Furthermore, the surface charge density displays a conspicuous negative peak precisely at the center of the transition zone, which varies depending on the height of the transition zone. When the center height of the transition zone is 45 mm, the maximum of the normal electric field on the grounded electrode is only −1.3 kV/mm. This can effectively avoid material aging. Thus, the transition zone formed by local doping SiC can efficiently regulate the electric field distribution, which provides a novel approach for the structural optimization of tri-post insulators.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 2","pages":"1138-1146"},"PeriodicalIF":2.9,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Current and Cathode Material on Microexplosion of Cathode Microprotrusion 电流和正极材料对阴极微突微爆炸的影响

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-03 DOI: 10.1109/TDEI.2025.3526086

Yingyao Zhang;Yuan Ma;Jiale Dai;Lijun Jin;Miaosong Gu

{"title":"Influence of Current and Cathode Material on Microexplosion of Cathode Microprotrusion","authors":"Yingyao Zhang;Yuan Ma;Jiale Dai;Lijun Jin;Miaosong Gu","doi":"10.1109/TDEI.2025.3526086","DOIUrl":"https://doi.org/10.1109/TDEI.2025.3526086","url":null,"abstract":"Microprotrusions on cathode surface might be melted and evaporated to form metal vapor and plasma in the vacuum gaps under the electron emission current caused by high electric field, which would seriously affect the vacuum insulation performance and the stability of high-voltage vacuum systems. To further study the dynamic characteristics of cathode microprotrusion under electron emission is of great importance in better understanding of the mechanism of electron emission induced vacuum breakdown. In this article, an established smoothed particle hydrodynamics (SPHs) model is used to simulate the dynamic evolution process of microexplosion phenomena of cathode microprotrusion. The dynamic characteristics of cathode microprotrusion under different current conditions and material are obtained and analyzed based on the SPH model to explore the effect of different factors on the dynamic characteristics of cathode microprotrusion under electron emission. The results show that both the current condition and the material properties would have significant influence on the dynamic characteristics of microprotrusion, such as the temperature rise, the temperature distribution, and the explosion delay time. The results of this article may provide some useful information to understand the mechanism of vacuum breakdown initiated by emission current.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 3","pages":"1623-1630"},"PeriodicalIF":2.9,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precise Operational Characteristics of Cable Accessories Considering Mechanical Stretching 考虑机械拉伸的电缆附件精确操作特性

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-01 DOI: 10.1109/TDEI.2024.3524980

Hao Hu;Xiaodong Li;Weinan Fan;Yunxiao Zhang;Yuhao Liu;Zhidong Jia

引用次数: 0

2024 Index IEEE Transactions on Dielectrics and Electrical Insulation Vol. 31 电介质和电绝缘学报，第31卷

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-01-01 DOI: 10.1109/TDEI.2024.3525236

引用次数: 0

A Review and Progress of Insulation Fault Diagnosis for Cable Using Partial Discharge Approach 局部放电法诊断电缆绝缘故障的综述与进展

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-12-31 DOI: 10.1109/TDEI.2024.3524332

Guangning Wu;Tingyu Zhang;Binglei Cao;Kai Liu;Kui Chen;Guoqiang Gao

{"title":"A Review and Progress of Insulation Fault Diagnosis for Cable Using Partial Discharge Approach","authors":"Guangning Wu;Tingyu Zhang;Binglei Cao;Kai Liu;Kui Chen;Guoqiang Gao","doi":"10.1109/TDEI.2024.3524332","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3524332","url":null,"abstract":"The cable is an essential pivot of electric energy transmission, and its operational condition influences the safety and stability of both the power system (PS) and traction power supply system (TPSS). The prompt detection of cable insulation conditions by partial discharge (PD) monitoring is crucial for mitigating potential damage to the cables. To begin with, this article provides a comprehensive overview of PD detection approaches for cables by introducing the mechanism of PD in cables. The detection approaches are categorized into electrical detection techniques and nonelectrical detection techniques. Afterward, to accurately assess the insulation condition of cables using the PD detection method, this article summarizes the insulation defect diagnosis approaches for cables. In particular, the insulation defect diagnosis approaches primarily comprise extraction and optimization for features, traditional machine-learning-based fault diagnosis approaches, and deep-learning-based fault diagnosis approaches. To conclude, this article summarizes the challenges and future research directions of cable fault diagnosis. Accurate cable fault diagnosis is fundamental to maintaining the reliable operation of cables, ensuring an uninterrupted power supply to both PS and TPSS, and enhancing the responsiveness to equipment failures.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 3","pages":"1639-1652"},"PeriodicalIF":2.9,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of PDC Testing for Medium-Voltage XLPE Cable Joint Water Ingress Detection PDC试验在中压交联聚乙烯电缆接头进水检测中的应用

IF 2.9 3区工程技术

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2024-12-27 DOI: 10.1109/TDEI.2024.3523877

Changyou Suo;Hongyan Cao;Wenkwang Chern;Amer Ghias

{"title":"Application of PDC Testing for Medium-Voltage XLPE Cable Joint Water Ingress Detection","authors":"Changyou Suo;Hongyan Cao;Wenkwang Chern;Amer Ghias","doi":"10.1109/TDEI.2024.3523877","DOIUrl":"https://doi.org/10.1109/TDEI.2024.3523877","url":null,"abstract":"This article took 6.6-kV medium-voltage crosslinked polyethylene (XLPE) cables as the test object, conducting field tests of polarization and depolarization currents (PDCs), very-low-frequency (VLF) tan <inline-formula> <tex-math>$delta $ </tex-math></inline-formula>, and time-domain reflectometry (TDR). The correlation between PDC testing and VLF tan <inline-formula> <tex-math>$delta $ </tex-math></inline-formula> and TDR measurements was investigated to enhance the effectiveness of the PDC testing method. PDC test outcomes indicated that polarization currents sometimes exhibit increasing or non monotonic trends over time, referred to as abnormal trends herein. Through in-depth research combining TDR measurement results and relevant theoretical frameworks, it is confirmed that abnormal polarization currents are attributable to water ingress issues in cable joints. Water ingress into the joint induces nonlinear variations in insulation conductivity with the electric field, manifesting as abnormal trends in polarization currents at the joint-insulation interface. These kinds of abnormal polarization currents can serve as an effective diagnostic indicator for identifying cable joint issues. Moreover, VLF tan <inline-formula> <tex-math>$delta $ </tex-math></inline-formula> measurements alone sometimes fail to accurately diagnose water ingress issues in cable joints, necessitating the use of TDR for further diagnosis.","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"32 1","pages":"36-44"},"PeriodicalIF":2.9,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143106313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0