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IEEE Transactions on Dielectrics and Electrical Insulation Information for Authors IEEE Transactions on Dielectrics and Electrical Insulation 给作者的信息
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-10-11 DOI: 10.1109/TDEI.2024.3465313
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引用次数: 0
Detection of SF₆ Decomposition Components H₂S and CO₂ Based on WDM and CRDS 基于WDM和CRDS的SF₆分解组分H₂S和CO₂检测
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-10-03 DOI: 10.1109/TDEI.2024.3472002
Haonan Lv;Xinran Zhang;Anhao Jiang;Wenchao Qian;Chaohai Zhang;Xiaoxing Zhang
H2S and CO2 are the SF6 decomposition components indicative of severe partial discharge (PD) faults and decomposition of organic insulation materials in partial over thermal (POT) faults, and their detection requires methods with high sensitivity and the capability for long-term online monitoring. In this article, wavelength division multiplexing (WDM) and cavity ring-down spectroscopy (CRDS) were combined to achieve the synchronous and accurate detection of H2S/CO2, which was executed by multiplexing the optical paths of two distributed feedback (DFB) lasers in the 1578/1600 nm wavelength band. To avoid instrument redundancy, a self-developed high-precision laser diode controller (LDC) board was implemented for the current and temperature modulation of dual-laser. By combining the CO2/H $_{mathbf {2}}$ S wavelength band with a high absorption coefficient ratio at 1600 nm, which is less interfered with by other components, and the 1578 nm wavelength band, the sensitivity of the CO $_{mathbf {2}}$ detection was improved compared with that of the single-beam CRDS system. Utilizing Allan variance analysis for system limit of detection (LoD) analysis, the system achieves a LoD of 0.02/0.31 ppmv (volume fraction $1times 10^{text {-6}}$ ) for H2S/CO2 within 28 s. Compared to existing absorption spectroscopy techniques, the detection error of the system for H2S/CO2 is 3.4%/2.4%, with both sensitivity and time efficiency at an advantageous level.
H2S和CO2是严重局部放电(PD)故障和部分过热(POT)故障中有机绝缘材料分解的SF6分解组分,其检测需要具有高灵敏度和长期在线监测能力的方法。本文采用波分复用技术(WDM)和空腔衰荡光谱技术(CRDS)相结合的方法,在1578/1600 nm波长范围内复用两台分布式反馈(DFB)激光器的光路,实现对H2S/CO2的同步精确检测。为避免仪器冗余,采用自主开发的高精度激光二极管控制器(LDC)板实现双激光器的电流和温度调制。通过将1600 nm吸收系数比高、受其他组分干扰少的CO2/H $_{mathbf {2}}$ S波段与1578 nm波段相结合,CO $_{mathbf{2}}$探测灵敏度较单束CRDS系统得到了提高。利用Allan方差分析进行系统检出限(LoD)分析,系统在28s内实现了0.02/0.31 ppmv(体积分数$1乘以10^{text{-6}}$)的H2S/CO2检出限。与现有的吸收光谱技术相比,该系统对H2S/CO2的检测误差为3.4%/2.4%,灵敏度和时间效率均处于有利水平。
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引用次数: 0
Dissolved Gas Analysis for Power Transformer Fault Diagnosis Based on Deep Zero-Shot Learning 基于深度零点学习的电力变压器故障诊断中溶解气体分析
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-10-01 DOI: 10.1109/TDEI.2024.3469913
Leixiao Lei;Yigang He;Zhikai Xing
Rapid and accurate fault diagnosis methods of power transformers are essential to ensure power systems’ safe and stable operation. However, the problem of limited fault data and missing data leads to inadequate feature learning, mapping offset, and low accuracy of fault diagnosis. To solve this problem, this study presents a deep zero-shot learning (DZSL) model to diagnose the unseen class fault for the dissolved gas analysis (DGA). First, a specific attribute matrix is presented to build a relationship between fault states and the attribute. Then, the channel-space-time attention network extracts the significant features from the dissolved gas in oil. The multiscale deep residual contraction networks (MDRNs) learn the connection between the attribute matrix and the main features. Finally, the cosine similarity comparison method obtains the transformer fault status. The performance of the proposed model is verified by the measured data of dissolved gas in the oil of the power transformer. The experimental results show that the model has a better performance than other compared methods.
快速准确的电力变压器故障诊断方法对于确保电力系统的安全稳定运行至关重要。然而,有限的故障数据和数据缺失问题导致特征学习不足、映射偏移和故障诊断准确率低。为解决这一问题,本研究提出了一种深度零点学习(DZSL)模型,用于诊断溶解气体分析(DGA)的未见类故障。首先,提出一个特定的属性矩阵,以建立故障状态与属性之间的关系。然后,通道-时空注意力网络从石油中的溶解气体中提取重要特征。多尺度深度残差收缩网络(MDRN)学习属性矩阵与主要特征之间的联系。最后,余弦相似性比较法可获得变压器故障状态。电力变压器油中溶解气体的测量数据验证了所提模型的性能。实验结果表明,该模型的性能优于其他比较方法。
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引用次数: 0
Transient Earth Voltage Sensor Measurements as a Nonintrusive Tool for Partial Discharge Analysis in Switchgears 瞬态接地电压传感器测量作为开关设备局部放电分析的非侵入式工具
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-30 DOI: 10.1109/TDEI.2024.3470755
F. Guastavino;L. Della Giovanna;F. Gallesi;E. Torello
Partial discharges (PDs) are a major cause of electrical stress and insulation failure, but their presence is also a symptom of insulation problems. Online PDs measurement allows for continuous monitoring of the insulation system. An online PDs measurement system for air-insulated switchgear (AIS) is developed, based on transient earth voltage (TEV) sensors, and evaluated for morphological analysis of insulation defects. The evaluation is conducted comparing the developed system with a conventional PD measurement system based on the IEC 60270 standard. The aim of the proposed system is to facilitate its integration with minimal retrofitting and operational disruption assuring the possibility to identify and analyze the defects. A pilot system, employing an AIS, is designed and tested. The results from both the PDs measurement systems are presented and discussed. Furthermore, the impact of a high capacitive load connected to the switchgear is investigated, and the possible effects of a capacitive load due to an MV cable is considered by simulating the realistic cable geometry.
局部放电(PDs)是电气应力和绝缘失效的主要原因,但它们的存在也是绝缘问题的症状。在线PDs测量允许对绝缘系统进行连续监测。开发了一种基于瞬态接地电压(TEV)传感器的空气绝缘开关设备PDs在线测量系统,并对其绝缘缺陷进行了形态学分析。将开发的系统与基于IEC 60270标准的传统PD测量系统进行了比较。拟议系统的目的是在尽量减少改造和操作中断的情况下促进其集成,确保有可能识别和分析缺陷。设计并测试了采用AIS系统的试点系统。给出并讨论了两种PDs测量系统的结果。此外,还研究了连接到开关柜的高容性负载的影响,并通过模拟实际电缆的几何形状来考虑由于中压电缆引起的容性负载可能产生的影响。
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引用次数: 0
Partial Discharge and Degradation Characteristics of Cast Resin Transformers Due to Bipolar Impulse Application 双极脉冲作用下铸造树脂变压器的局部放电和退化特性
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-25 DOI: 10.1109/TDEI.2024.3468249
Yuanhang Yao;Mizuki Miyagawa;Masayuki Hikita;Masahiro Kozako;Yoshihiro Harada;Katsutoshi Takei;Masaru Ikeda;Kazunori Miyazaki;Kazuhiro Futakawa
The objective of our work is to investigate partial discharge (PD) behaviors and degradation characteristics in winding insulation of an actual 22 kV cast resin transformer (CRTr) when subjected to bipolar impulse voltages. A differential high-frequency current transformer (HFCT) was employed on the high-voltage coils to measure PD pulses induced by impulse voltages. Additionally, PD measurement at ac voltage was carried out to characterize the aging process resulting from the application of bipolar impulses. Experimental findings indicated that higher-level bipolar impulses could cause large-amplitude PDs in the windings, occurring at the peak value of the applied impulse voltages and increasing with the number of applied impulses. PD inception voltage (PDIV) at ac voltage decreased to the operating voltage, and the discharge amplitude and phasewidth in phase-resolved PD (PRPD) patterns increased due to impulse PD occurrences. Considering these results, it is evident that the bipolar lightning impulses could cause large-amplitude PDs, intensify impulse PD activity, and ultimately lead to dielectric breakdown in the CRTr windings. Space charge accumulation and residual charge deposition resulting from impulse PD play a significant role in the generation and the process of development for impulse PDs in the winding insulation, contributing to an acceleration effect in the degradation process and eventual insulation failure.
我们的工作目的是研究实际的22 kV铸造树脂变压器(CRTr)在双极冲击电压作用下绕组绝缘的局部放电(PD)行为和退化特性。在高压线圈上采用高频差动电流互感器(HFCT)测量脉冲电压引起的局部放电脉冲。此外,在交流电压下进行了PD测量,以表征双极脉冲应用导致的老化过程。实验结果表明,高电平的双极脉冲可以在绕组中引起大幅度的脉冲放电,发生在施加脉冲电压的峰值处,并随着施加脉冲的数量而增加。交流电压下PD起始电压(PDIV)降低到工作电压,脉冲PD的发生增加了相分辨PD (PRPD)模式的放电幅度和相宽。考虑到这些结果,很明显,双极雷电脉冲可以引起大幅度的PD,增强脉冲PD活动,最终导致CRTr绕组的介电击穿。脉冲放电产生的空间电荷积累和残余电荷沉积在绕组绝缘脉冲放电的产生和发展过程中起着重要作用,加速了脉冲放电的降解过程,最终导致绝缘失效。
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引用次数: 0
Diagnosis and Localization of Moisture Defects in HV Cable Water-Blocking Buffer Layer Based on Characteristic Impedance Variation 基于特性阻抗变化的高压电缆阻水缓冲层湿气缺陷诊断和定位
IF 2.9 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-18 DOI: 10.1109/TDEI.2024.3462903
Jingtao Huang;Kai Zhou;Qi Zhao;Yefei Xu;Pengfei Meng;Hao Yuan;Yao Fu;Siyan Lin
To identify and localize buffer layer moisture defects in high-voltage (HV) cables, this article verifies the effectiveness of the frequency-domain reflectometry (FDR) method theoretically and experimentally by analyzing the impact of moisture on the characteristic impedance of the cable. This article first analyzes the relationship between the electrical parameters of the buffer layer and the characteristic impedance of the cable. Subsequently, the electrical parameters were tested for buffer layer samples at different degrees of moisture, and the characteristic impedance of the cable was calculated. The results indicate that the characteristic impedance of the cable decreases after moisture exposure primarily due to a significant increase in the dielectric constant of the buffer layer. As the degree of moisture increases, the characteristic impedance gradually decreases until it becomes stable. This is mainly due to its rate of change being inversely related to the square of the dielectric constant of the buffer layer. This provides a theoretical basis for the implementation of the FDR method. Finally, this article conducted FDR tests on HV cables with different degrees of moisture, demonstrating that the FDR method can effectively locate buffer layer moisture defects.
为了识别和定位高压电缆缓冲层水分缺陷,本文通过分析水分对电缆特性阻抗的影响,从理论上和实验上验证了频域反射(FDR)方法的有效性。本文首先分析了缓冲层电气参数与电缆特性阻抗之间的关系。随后,对不同含水率下缓冲层样品的电学参数进行了测试,并计算了电缆的特性阻抗。结果表明,电缆受潮后的特性阻抗减小主要是由于缓冲层介电常数的显著增加。随着受潮程度的增加,特性阻抗逐渐减小,直至趋于稳定。这主要是由于它的变化率与缓冲层介电常数的平方成反比。这为FDR方法的实施提供了理论依据。最后,本文对不同受潮程度的高压电缆进行了FDR试验,表明FDR方法可以有效定位缓冲层受潮缺陷。
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引用次数: 0
Performance Evaluation of Insulation Designs for Rotating Machines in More Electric Aircraft 更多电动飞机旋转电机绝缘设计的性能评估
IF 3.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-17 DOI: 10.1109/tdei.2024.3462671
Chaofan Yu, Peng Wang, Andrea Cavallini, Yingwei Zhu, Qun Zhou, Shijin Ma, Wenhuan Zhao, Zeng Peng
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引用次数: 0
Multi-parameter weight analysis and comprehensive performance evaluation of EPDM rubber under ultraviolet environment 紫外线环境下三元乙丙橡胶的多参数重量分析和综合性能评估
IF 3.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-13 DOI: 10.1109/tdei.2024.3460729
Wenhao Deng, Hao Feng, Hao Guo, Yongjie Nie, Guochang Li, Yuanwei Zhu, Shengtao Li, Yanhui Wei
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引用次数: 0
Charge injection barrier at the metal/oil-paper insulated interface based on first principles 基于第一原理的金属/油纸绝缘界面电荷注入屏障
IF 3.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-13 DOI: 10.1109/tdei.2024.3460731
Yuqi Chen, Dayou Liu, Mrutyunjay Maharana, Jiacheng Zhou, Kai Wu, Ricardo Albarracín Sánchez, Niharika Baruah
{"title":"Charge injection barrier at the metal/oil-paper insulated interface based on first principles","authors":"Yuqi Chen, Dayou Liu, Mrutyunjay Maharana, Jiacheng Zhou, Kai Wu, Ricardo Albarracín Sánchez, Niharika Baruah","doi":"10.1109/tdei.2024.3460731","DOIUrl":"https://doi.org/10.1109/tdei.2024.3460731","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"41 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261354","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
Discharge Monitoring and Aging Assessment Method for Metallized Film Capacitor Based on Acoustic Signal 基于声学信号的金属化薄膜电容器放电监测和老化评估方法
IF 3.1 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-09-13 DOI: 10.1109/tdei.2024.3460733
Linzi Zheng, Shengchang Ji, Xinyi Yan, Zhili Li, Qiming Sun, Lingyu Zhu
{"title":"Discharge Monitoring and Aging Assessment Method for Metallized Film Capacitor Based on Acoustic Signal","authors":"Linzi Zheng, Shengchang Ji, Xinyi Yan, Zhili Li, Qiming Sun, Lingyu Zhu","doi":"10.1109/tdei.2024.3460733","DOIUrl":"https://doi.org/10.1109/tdei.2024.3460733","url":null,"abstract":"","PeriodicalId":13247,"journal":{"name":"IEEE Transactions on Dielectrics and Electrical Insulation","volume":"30 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261352","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
期刊
IEEE Transactions on Dielectrics and Electrical Insulation
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