2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献_第2页

Effect of Temperature on RPDIV of Enamel Twisted Pair under Repetitive Impulse Voltage Application with Different Rise Time 温度对重复脉冲电压下不同上升时间搪瓷双绞线RPDIV的影响

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705435

Yuki Zenda, S. Takenouchi, M. Kozako, M. Hikita, T. Okamoto, Sun Jintong, A. Izumi, K. Karasawa

{"title":"Effect of Temperature on RPDIV of Enamel Twisted Pair under Repetitive Impulse Voltage Application with Different Rise Time","authors":"Yuki Zenda, S. Takenouchi, M. Kozako, M. Hikita, T. Okamoto, Sun Jintong, A. Izumi, K. Karasawa","doi":"10.1109/CEIDP50766.2021.9705435","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705435","url":null,"abstract":"An increase in the capacitance of the stator winding of an inverter-fed motor increases the rise time of repetitive impulse voltage. It has been reported that partial discharge inception voltage (PDIV) of the windings decreases as the rise time increases. This paper deals with the effect of the rise time on PDIV of enamel twisted pair samples simulating the insulation system of the windings of inverter-fed motors under repetitive impulse voltage and high temperature environment. PDs were detected by a 10 mm diameter loop antenna sensor (LS) with a high-pass filter (395~3200 MHz), and repetitive PDIV (RPDIV) was measured using an automatic PD measurement system. Temperature dependence of RPDIV of the twisted pair sample with varying the rise time tr of the impulse voltage waveform. It was found that RPDIV at room temperature is almost the same regardless of tr, while in the high temperature region above 100 °C RPDIV decreases remarkably with increasing temperature and tr. The decrease in RPDIV with temperature rise can be interpreted in terms of the decrease in gas density with the temperature increase at the wedge-shaped gap formed by the twisted pair sample. In addition, a significant decrease in RPDIV was found to appear with increase in tr in the high temperature region. The result is considered to be caused by increase in the probability of initial electron supply for triggering discharge with increase in tr.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"24 1","pages":"603-606"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85447062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the Temperature Profile of the IEC TS 62332-1 Dual-temperature Ageing Cell 了解IEC TS 62332-1双温老化电池的温度分布

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705332

Berihu Mebrahtom, S. Matharage, Qiang Liu, C. Krause, A. Gyore, L. van der Zel

引用次数: 0

Dielectric properties of recycled city and industrial waste polyethylene 再生城市和工业废聚乙烯的介电性能

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705467

Iman Shirzaei Sani, É. David, N. Demarquette

引用次数: 0

Negative DC Breakdown Characteristics of C3F7CN and CO2 Mixture with Different Electrode Materials 不同电极材料C3F7CN和CO2混合物的直流负击穿特性

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705475

F. O. Bahdad, L. Chen, S. Rowland

引用次数: 0

Flexible nanogenerator with 3D-printed ferroelectrets 具有3d打印铁驻极体的柔性纳米发电机

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705318

Ningzhen Wang, Kerry Davis, Michael Sotzing, Mohamadreza Arab Baferani, Jindong Huo, C. B. Carter, R. Gerhard, Yang Cao

{"title":"Flexible nanogenerator with 3D-printed ferroelectrets","authors":"Ningzhen Wang, Kerry Davis, Michael Sotzing, Mohamadreza Arab Baferani, Jindong Huo, C. B. Carter, R. Gerhard, Yang Cao","doi":"10.1109/CEIDP50766.2021.9705318","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705318","url":null,"abstract":"Flexible ferroelectret-polymer films are piezoelectric due to macro-dipoles that consist of charge layers with opposite polarity across deformable internal cavities and can thus be suitable for wearable energy-harvesting devices. 3D printing of ferroelectrets could increase the design variability of cavity structures, enhance performance and extend application possibilities. In this work, three polypropylene (PP) ferroelectrets with ellipsoidal cavities, but different in porosity and sample thickness were printed by means of Fused Filament Fabrication. After the samples had been polarized via a corona discharge, their piezoelectric performance was characterized by measuring short-circuit current (Isc) and open-circuit voltage (Voc) responses under the same cyclic compressive force. It was found that the PP ferroelectret with a porosity of 25% performed best with Isc of 0.65 μA and Voc of 65 V, and that the peak-to-peak output power decreases with decreasing porosity. A clear influence of sample thickness and cavity geometry was not observed. Our results provide design guidance for the future optimization of the porous structure of ferroelectrets and promote the development of energy harvesting devices for wearable electronics.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"15 1","pages":"375-378"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75873370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Low/Zero Fault Diagnosis of Porcelain Insulator Based on HSV Color Space Image Processing Technology 基于HSV彩色空间图像处理技术的瓷绝缘子低/零故障诊断

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705341

F. Lin, H. Xing, Jingjing Yang, Wentao Lin, Yongji Ma, Lijun Jin

{"title":"Low/Zero Fault Diagnosis of Porcelain Insulator Based on HSV Color Space Image Processing Technology","authors":"F. Lin, H. Xing, Jingjing Yang, Wentao Lin, Yongji Ma, Lijun Jin","doi":"10.1109/CEIDP50766.2021.9705341","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705341","url":null,"abstract":"In this paper, the typical disk suspension porcelain insulators in transmission and distribution lines were taken as the research object, the infrared image differences between low/zero insulators and normal insulators were analyzed, and the low/zero fault diagnosis of porcelain insulator was carried out by HSV color space image recognition technology constructively. Firstly, the prediction model of porcelain insulator deterioration was constructed by using YOLOv3 algorithm, and the smallest rectangular area of insulator was extracted from the infrared image. Then the insulator was segmented from the rectangular region by using K-means algorithm to avoid background interference. On this basis, the normalized values of HSV color space features, including the maximum and minimum values of H component, the average value of S component and the maximum value of V component, were drawn according to the long axis direction by using the rotating rectangle to correct the insulator image. Combined with the correlation between HSV components and temperature rise, the detection criterion of low/zero fault of porcelain insulator is deduced, the operation state evaluation of insulator is accomplished.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"53 1","pages":"143-146"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81475743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Thermal Modelling of Mineral Oil and Natural Ester Nanofluids 矿物油和天然酯纳米流体的热模拟

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705360

Joyce Jacob, B. V. Kumar, P. Preetha, T. Sindhu

引用次数: 0

Considerations on using Thermal Pulses for Space Charge Measurements in Medium Thickness Insulating Samples 热脉冲用于中厚绝缘样品空间电荷测量的考虑

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705440

Sneha Satish Hegde, P. Notingher, J. Laurentie

引用次数: 0

Effect of Ripple in DC on Voltage Endurance Coefficient of Cable Insulation Based on Damage Equalization Method 基于损伤均衡法的直流纹波对电缆绝缘耐压系数的影响

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705441

Birender Singh Thind, C. Reddy

引用次数: 0

Study on the polarization process for piezoelectric nanofibrous layers 压电纳米纤维层极化过程的研究

2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2021-12-12 DOI: 10.1109/CEIDP50766.2021.9705470

G. Selleri, M. Gino, L. Gasperini, M. Zanoni, C. Gualandi, M. L. Focarete, D. Fabiani

引用次数: 7