2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)最新文献

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Simulation of Composite Insulator Interface Defects in Partial Discharge 局部放电中复合绝缘子界面缺陷的模拟
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544804
Zhen Huang, Zhonghao Zhang, Rui Wang, Xinyu Huang, Xiangyang Peng, Liming Wang, Zhangxiang Nie, Daiming Yang
{"title":"Simulation of Composite Insulator Interface Defects in Partial Discharge","authors":"Zhen Huang, Zhonghao Zhang, Rui Wang, Xinyu Huang, Xiangyang Peng, Liming Wang, Zhangxiang Nie, Daiming Yang","doi":"10.1109/CEIDP.2018.8544804","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544804","url":null,"abstract":"The interface failure of composite insulator is a common phenomenon in recent years. However, the mechanism of failure generation is still not clear due to the lack of enough tests. To further study this problem, we conducted the experiments. A long-term experiment of interface failure simulation is conducted in which artificial defect was set in the interface between sheath and core. Experiments results showed that the partial discharge can cause the inner defects in composite insulators. The defect morphology is similar to the real defects in degraded insulators. The experiment phenomena confirm that partial discharge plays a main role in the generation of interface failure. The results provided a reference to technology improvement and overhead transmission line inspection.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123858746","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
Research on Influence of Charge Quantity of Particles on Contamination Accumulation Characteristics 颗粒电荷量对污染累积特性影响的研究
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544798
Liao Yifan, L. Mingzhe, C. Bin, M. Hongwei, W. Liming
{"title":"Research on Influence of Charge Quantity of Particles on Contamination Accumulation Characteristics","authors":"Liao Yifan, L. Mingzhe, C. Bin, M. Hongwei, W. Liming","doi":"10.1109/CEIDP.2018.8544798","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544798","url":null,"abstract":"As the charged particles are subjected to electric force, the electric field has a significant influence on the contamination characteristics of insulator. The electric field force is related to the electric field intensity and the charge quantity of particles. In order to study the influence of charge quantity of particles on contamination accumulation characteristics, the artificial contamination accumulation test on glass specimen under uniform electric field was designed and carried out. The grounded metal nets with different hole apertures were used to filter the particles that were blown to the chamber, so as to get the particles with different charge quantity approximately. Test results are shown as follows: Under AC electric field, the amount of contamination accumulated on the surface of specimen is decreased with the increase of the charge quantity of particles. Under DC electric field, the amount of contamination accumulated on the surface of specimen is increased with the increase of the charge quantity of particles, and was increased first and then decreased with the increase of electric field intensity. The critical electric intensity is 1. SkV/cm under both positive and negative electric field.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124452133","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
Dielectric Relaxation and Ferroelectric Imprint 介电弛豫和铁电压印
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544828
H. Kliem
{"title":"Dielectric Relaxation and Ferroelectric Imprint","authors":"H. Kliem","doi":"10.1109/CEIDP.2018.8544828","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544828","url":null,"abstract":"The term imprint is generally used for a special kind of a reversible change in the ferroelectric state. It refers to a time dependent development of the material's resistance against polarization reversal. At the example of P(VDF-TrFE) it is shown that if polarized to the remanent polarization and under a switched off external field the coercive field of the sample's hysteresis loop increases in time, the ferroelectric switching time increases as well, the remanent polarization decreases, and the small signal ac capacitance decreases also. All four effects exhibit a linear behavior on a logarithmic time scale, i.e. they are proportional to log tw, with tw as the waiting time after switching off the external field. A model is developed which relates the four observations. The model is based on a feedback effect between a crystalline phase where the ferroelectric switching takes place and an amorphous or disordered phase with a relaxational polarization response.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127697094","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
Monitoring Cable current and Laying Environment Parameters for Assessing the Aging Rate of MV Cable Joint Insulation 监测电缆电流及敷设环境参数评估中压电缆接头绝缘老化率
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544904
L. Peretto, R. Tinarelli, A. Ghaderi, A. Mingotti, G. Mazzanti, G. Valtorta, G. Amoroso, S. Danesi
{"title":"Monitoring Cable current and Laying Environment Parameters for Assessing the Aging Rate of MV Cable Joint Insulation","authors":"L. Peretto, R. Tinarelli, A. Ghaderi, A. Mingotti, G. Mazzanti, G. Valtorta, G. Amoroso, S. Danesi","doi":"10.1109/CEIDP.2018.8544904","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544904","url":null,"abstract":"Joints are critical components of MV cable distribution networks and the aging rate of their insulation is particularly sensitive to temperature due to loading current and laying environment parameters. This makes it very useful to monitor the load current and laying environment parameters (humidity, pressure and temperature) of joints, so as to single out conditions that might accelerate joint insulation aging rate critically. This paper illustrates the installation of humidity, pressure, current and temperature sensors - in a partnership between e-distribuzione (the main DSO in Italy) and the University of Bologna - to assess the aging rate of cable joint insulation in underground distribution networks.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126385291","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: 13
Research on Wetting Characteristics of Insulator in Ultrasonic Fog 超声雾中绝缘子润湿特性的研究
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544842
Bin Cao, Liming Wang, H. Mei, Mingze Li, Xudong Ma, Jun Kang
{"title":"Research on Wetting Characteristics of Insulator in Ultrasonic Fog","authors":"Bin Cao, Liming Wang, H. Mei, Mingze Li, Xudong Ma, Jun Kang","doi":"10.1109/CEIDP.2018.8544842","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544842","url":null,"abstract":"Pollution accumulation and wetting of insulator are the two prerequisites for the pollution flashover. In this paper, the wetting characteristics of artificial polluted insulators in the ultrasonic fog were analyzed. Firstly, a method to analyze the water absorption of the contamination layers on the insulator surface is presented in this paper, and then by measuring the surface conductivity of the test specimens in the salt fog, the saturated water absorption of the contamination layers under different NSDD and different angle of inclination is calculated. It has been found that in the ultrasonic fog chamber, both the NSDD and the inclination angles have influence on the saturated water absorption of the insulators. For the specimens with vertical arrangement, the saturated water absorption is in a range of 1.68-2.7mg/cm2, which is greatly influenced by the NSDD. However, for the test specimen with inclination degree at 45°, the saturated water absorption is 3.04-3.42 mg/cm2and less affected by NSDD.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125570771","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
Analysis of the Gamma Irradiation Effect on PTFE Films by FTIR and DSC 伽玛辐照对聚四氟乙烯薄膜影响的FTIR和DSC分析
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544841
N. Saidi-Amroun, S. Mouaci, A. Mezouar, M. Saidi, V. Griseri, Gilbert Teyssedre
{"title":"Analysis of the Gamma Irradiation Effect on PTFE Films by FTIR and DSC","authors":"N. Saidi-Amroun, S. Mouaci, A. Mezouar, M. Saidi, V. Griseri, Gilbert Teyssedre","doi":"10.1109/CEIDP.2018.8544841","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544841","url":null,"abstract":"Dielectric materials can be used in radiative environment that is why it is of major importance to determine their properties modifications with time. In this paper we focus our attention on PolyTetraFluoroEthylene (PTFE) films submitted to gamma radiations. We investigate the FTIR spectra and show that after exposure to Co60the crystallinity of the material is increasing. This result is confirmed by Differential Scanning Calorimetry (DSC) analysis. Some space charge distribution profiles obtained by the Pulse Electro Acoustic (PEA) method show that the irradiation favours the drift of injected charges toward the bulk. Obviously the dose of radiation must be carefully chosen in order to be able to perform electrical measurements. Indeed, we observed that if the radiation dose is too high the sample becomes fragile and most of the characterisation tools cannot be used.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125749435","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
Effectiveness of Stress Grading System Builds on the Heat Production in a Form-Wound Coil of an Inverter-fed Rotating Machine 应力分级系统的有效性建立在逆变式进给旋转机械成形线圈产热的基础上
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544776
Alireza Naeini, E. Cherney, S. Jayaram
{"title":"Effectiveness of Stress Grading System Builds on the Heat Production in a Form-Wound Coil of an Inverter-fed Rotating Machine","authors":"Alireza Naeini, E. Cherney, S. Jayaram","doi":"10.1109/CEIDP.2018.8544776","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544776","url":null,"abstract":"Limiting the temperature rise in the stress grading system in a medium voltage form-wound coil of a rotating machine driven by an adjustable speed drive is essential to prolong the life of a motor. The common way of increasing the electrical conductivity of the system, thereby to lower joule heat production and temperature rise, is to increase the build of the tape system. Simulation studies on various stress grading system builds on the heat production has been evaluated in this study. A good correlation between measured and simulated temperature profiles under pulse voltage condition confirms the validity of the simulation. The stress grading system has been simulated using the 2D axisymmetric module in COMSOL® 5.2a. The results show that increasing the number of layers of conductive armor tape can reduce the heat production in CAT region but by increasing the number of layers of stress grading tape leads to increase in heat production in SGT region. The study suggests that use of other non-linear tape materials for SGT may be needed to effectively lower the temperature rise in the stress grading system.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132945269","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: 2
Trap Characteristic and Potential Trap Model of Water Trees in XLPE XLPE中水树的圈闭特征及潜在圈闭模型
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544867
Xiantao Tao, Hua Li, Jiandong Rao, Jingyun Tu, Gen Yan, Qin Zhang, Yi Liu, Fuchang Lin
{"title":"Trap Characteristic and Potential Trap Model of Water Trees in XLPE","authors":"Xiantao Tao, Hua Li, Jiandong Rao, Jingyun Tu, Gen Yan, Qin Zhang, Yi Liu, Fuchang Lin","doi":"10.1109/CEIDP.2018.8544867","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544867","url":null,"abstract":"Water trees were generally considered to develop in amorphous regions of Cross-linked Polyethylene (XLPE) material, however the present work proved that the growth of water trees might cause the damage in the amorphous regions as well as the crystalline ones in XLPE. Meanwhile, the trap and physical characteristics of water trees in XLPE samples were discussed in the present work. XLPE samples with a thickness of 5 mm were made by the hot-pressing method, and the samples were aged by the water-needle method with the voltage of 6 kV/5 kHz. After aging for 600 hours, the cultivated water trees with the average branch length of 159.88 μm were observed in the anatomical sections of the samples. In order to study the density and crystallinity, the Raman Spectroscopy (RS) was used to analyze the XLPE sample with/without the water trees. The average density and crystallinity of new samples, the regions without/with water trees of Aged samples were 0.9145 g/cm3and 40.12%, 0.9095 g/cm3and 36.67%, 0.8999 g/cm3and 30.04%, respectively. Meanwhile, the Thermal Stimulus Depolarization Current (TSDC) test was employed to analyze the trap level of samples. And the trap level of the new samples and samples without/with water trees 0.6458 eV, 0.6812 eV and 0.8715 eV, respectively. The densities and crystallinity of regions with water trees were lower than that of the non-defective regions, which indicated that the growth of water tree defects might cause the destruction of both the amorphous and the crystalline region, thus the trap level of the water tree samples increases.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"60 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132854082","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: 3
Electric Response and Thermal Properties of Ethylene Vinyl Acetate/Graphene-based Composite 乙烯醋酸乙烯/石墨烯基复合材料的电响应和热性能
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544801
S. Azizi, C. Oucllet-Plamondon, É. David, M. Frechette
{"title":"Electric Response and Thermal Properties of Ethylene Vinyl Acetate/Graphene-based Composite","authors":"S. Azizi, C. Oucllet-Plamondon, É. David, M. Frechette","doi":"10.1109/CEIDP.2018.8544801","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544801","url":null,"abstract":"Ethylene vinyl acetate/Graphene (EVA/G) composites containing two different types of graphene were prepared by solvent-casting. The EVA/commercial graphene (CG) composites featured a percolation threshold at slightly higher than 20 wt% of CG content, while, the EVA/G-like was found to be conductive at 30 wt%. Below the percolation threshold, a constant dielectric loss behavior was observed for most of the graphene containing composites. Closer to the percolation, interfacial loss peaks were observed and their frequential position was found to shift toward the higher frequencies when the temperature was increased.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132995390","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: 3
Schottky Barrier Height Quantification of Plasma Treated P(VDF-TRFE) Thin Films 等离子体处理P(VDF-TRFE)薄膜的肖特基势垒高度定量
2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2018-10-01 DOI: 10.1109/CEIDP.2018.8544868
Michael A. Vecchio, A. Meddeb, Z. Ounaies, M. Lanagan, J. Shallenberger
{"title":"Schottky Barrier Height Quantification of Plasma Treated P(VDF-TRFE) Thin Films","authors":"Michael A. Vecchio, A. Meddeb, Z. Ounaies, M. Lanagan, J. Shallenberger","doi":"10.1109/CEIDP.2018.8544868","DOIUrl":"https://doi.org/10.1109/CEIDP.2018.8544868","url":null,"abstract":"Angle-resolved XPS and ToF-SIMS are employed to determine the impact of O2/CF4plasma treatment on P(VDF-TrFE) surface chemistry. Results indicate that chemical modification by plasma increases the percentage of F and O at the film surface, with the grafted species remaining within the first 5-10nm of the film. Analysis of current-voltage I(V) data reveals that high field conduction is an interfacially dominated phenomenon in the modified P(VDF-TrFE) thin films. A parametric study of Schottky emission theory indicates that conduction is dominated by change in Schottky barrier height relative to change in both material permittivity and Richardson constant. Schottky barrier height quantification estimates a lowering of the barrier height by 0.041eV due to plasma treatment, further supporting that conduction is surface dominated in thin P(VDF -TrFE) films, and that conduction can be significantly influenced via surface chemical modification.","PeriodicalId":377544,"journal":{"name":"2018 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128467404","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
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