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2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)最新文献

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Application of Weibull distribution for high temperature breakdown data 威布尔分布在高温击穿数据中的应用
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963514
G. Raju, A. Katebian, S. Z. Jafri
{"title":"Application of Weibull distribution for high temperature breakdown data","authors":"G. Raju, A. Katebian, S. Z. Jafri","doi":"10.1109/CEIDP.2001.963514","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963514","url":null,"abstract":"The breakdown electric field strength of high temperature polymer materials depends upon several factors, the measured values exhibiting a statistical distribution. To apply statistical methods the population size of breakdown data has to be sufficiently large. Though studies have been conducted on breakdown field strength of polymers at room temperature, yielding a large number of data, such studies at high temperatures are relatively few due to practical limitations. This study is devoted to the investigation of breakdown field strength of a number of polymer films at high temperatures using a new experimental set up in which large population data is obtained in a relatively short time.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129398660","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: 5
The effect of electrical field parameters, medium properties and interelectrode gap geometry on the EHD pump characteristics 电场参数、介质性质和电极间隙几何形状对EHD泵特性的影响
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963598
I. Kojevnikov, O. V. Motorin, M. Bologa, I.A. Kozhukhar
{"title":"The effect of electrical field parameters, medium properties and interelectrode gap geometry on the EHD pump characteristics","authors":"I. Kojevnikov, O. V. Motorin, M. Bologa, I.A. Kozhukhar","doi":"10.1109/CEIDP.2001.963598","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963598","url":null,"abstract":"Reports the results of an experimental investigation of the EHD pump with a three-wire electrode system. The dependencies of head-flow rate characteristic on the potential difference applied to the electrodes, interelectrode gap distance, channel width in the interelectrode gap, the distance between collectors, and conductivity of working liquid are presented. It is found that the width of channel in the interelectrode gap (/spl delta/) and the gap between collectors (s) affect significantly the EHD pump characteristics. The maximum static head of 5160 Pa is obtained at /spl delta/ = 2 mm, s = 1 mm, and it does not depend on electrode length.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"82 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128921965","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: 6
Stability of a layer of dielectric fluid subjected to corona discharge: long wave approach 电晕放电下介电流体层的稳定性:长波方法
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963594
F. Vega, A.T. Perez, A. Castellanos
{"title":"Stability of a layer of dielectric fluid subjected to corona discharge: long wave approach","authors":"F. Vega, A.T. Perez, A. Castellanos","doi":"10.1109/CEIDP.2001.963594","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963594","url":null,"abstract":"Experiments have shown that there exists an instability associated with corona discharge from a point to a layer of dielectric liquid. Above a certain voltage of the point electrode, the surface of the liquid deforms and convection appears in the form of large cells (rose-window instability). The typical width of the cells is much larger than the depth of the liquid layer. This justifies the analysis of the instability focusing in the behaviour of perturbations of small wave number (large wavelength). We write the linear equations for the instability of the liquid surface and solve it analytically, neglecting the liquid motion. We also study the role of the non-dimensional parameters associated with the problem.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117254718","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
Short interval measurement of transient space charge distribution and electrical breakdown in polymer film in high temperature region 高温区聚合物薄膜瞬态空间电荷分布和电击穿的短间隔测量
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963591
M. Fukuma, M. Nagao, M. Kosaki, K. Fukunaga, T. Maeno
{"title":"Short interval measurement of transient space charge distribution and electrical breakdown in polymer film in high temperature region","authors":"M. Fukuma, M. Nagao, M. Kosaki, K. Fukunaga, T. Maeno","doi":"10.1109/CEIDP.2001.963591","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963591","url":null,"abstract":"Space charge dynamics in low-density polyethylene (LDPE) films were observed by the pulsed electroacoustic (PEA) method during breakdown test at various temperatures. In order to investigate the intrinsic electrical breakdown phenomena, the applied electric field was increased 3MV/cm in 150ms, and kept constant until breakdown, or 300ms at the longest. Space charge profiles were measured at 1ms intervals. A significant positive charge propagation into the sample was observed only immediately before the breakdown at 90/spl deg/C. These measurements revealed that the positive charge behavior is related to the breakdown phenomena.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128980747","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
Recent experiments on space charge and transport in polyethylene under high DC field 高直流电场下聚乙烯空间电荷和输运的最新实验
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963587
J. Matallana, J. Bigarré, P. Hourquebie, R. Coelho, H. Janah, P. Mirebeau, S. Agnel, A. Toureille
{"title":"Recent experiments on space charge and transport in polyethylene under high DC field","authors":"J. Matallana, J. Bigarré, P. Hourquebie, R. Coelho, H. Janah, P. Mirebeau, S. Agnel, A. Toureille","doi":"10.1109/CEIDP.2001.963587","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963587","url":null,"abstract":"The development of carefully designed extruded HVDC cables remains a challenge. The field distribution - and therefore the space charge distribution over the insulation thickness determine the behavior and the life expectancy of the cable, since a very high space charge level is obviously undesirable. This article presents the build-up of space charge, as measured by the thermal step method (TSM) in flat samples of polyethylene, under various levels of temperature. The absorption current flowing after application of a voltage step and the decaying surface potential after DC poling, which are indirect manifestations of space charge accumulation, have also been recorded. A blend of LDPE with a conjugated polymer might modify the trapping ability. The results seem interesting from the fundamental as well as the engineering standpoint.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132139405","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
Image analysis of hydrophobicity of polymer insulators using PVM 基于PVM的聚合物绝缘子疏水性图像分析
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963610
T. Tokoro, Y. Omoto, M. Kosaki
{"title":"Image analysis of hydrophobicity of polymer insulators using PVM","authors":"T. Tokoro, Y. Omoto, M. Kosaki","doi":"10.1109/CEIDP.2001.963610","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963610","url":null,"abstract":"Hydrophobicity of polymeric insulating material surface such as silicone rubber insulator (SIR) was studied by using image data analysis of the sample surface. Using PVM (parallel virtual machine) programming procedure for UNIX operating system, hydrophobicity of polymer surface was evaluated from their surface images of water droplets on the sample surface. The hydrophobic surface images under the spraying of distilled water were taken by CCD camcorder. The video image was divided into each image frame and PVM program analyzed each image data, simultaneously. Image indexes such as size and shape factor, fc, of droplets can be evaluated from each hydrophobic image frame. Then, the distribution of the size and fc were evaluated. Time variation of the hydrophobic indexes during high electric field application was also evaluated, where electric field deformed the droplets.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127839080","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: 11
Impulse breakdown characteristics of permittivity graded solid spacer in SF/sub 6/ SF/sub - 6/中介电常数梯度固体间隔片的脉冲击穿特性
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963567
K. Kato, M. Kurimoto, H. Adachi, S. Sakuma, H. Okubo
{"title":"Impulse breakdown characteristics of permittivity graded solid spacer in SF/sub 6/","authors":"K. Kato, M. Kurimoto, H. Adachi, S. Sakuma, H. Okubo","doi":"10.1109/CEIDP.2001.963567","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963567","url":null,"abstract":"Functionally gradient materials (FGM) have a spatial distribution of permittivity in order to achieve an efficient stress control. Application of FGM for solid spacer of electric apparatus is expected to improve electric field distribution around the spacer. This paper presents the applicability of FGM to solid spacer model in SF/sub 6/ gas, both by numerical simulation and breakdown experiments. The effect of FGM on the enhancement of electric field utilization is presented in this study.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122989095","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
Analysis of partial discharge to high voltage motor stator windings 高压电机定子绕组局部放电分析
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963552
Hee-Dong Kim
{"title":"Analysis of partial discharge to high voltage motor stator windings","authors":"Hee-Dong Kim","doi":"10.1109/CEIDP.2001.963552","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963552","url":null,"abstract":"Partial discharge(PD) tests are used to evaluate the insulation condition of 6.6 kV motor stator windings. These tests were conducted using a conventional partial discharge detector (PDD), turbine generator analyzer (TGA) and partial discharge analyzer (PDA). Off-line PD measurements were performed on using the PDD. PD magnitude of the No. 1 and 2 stator windings was about 8,200 pC and 2,400 pC at the normal line-to-ground voltage, respectively. Two stator windings have been equipped with two 80 pF epoxy-mica couplers (one per stator winding). The PD pulses from sensors were measured with the TGA and PDA instruments at 3.81 kV, 4.76 kV and 6.6 kV. The PDD, TGA and PDA showed that off-line PD magnitude, the maximum PD magnitude (Qm) and normalized quantity number (NQN) increased with increase of ac voltage. The PDD, TGA and PDA test results showed that internal and slot discharges were detected in voids of the groundwall insulation and at the surface of stator winding. The results of the PDD, TGA and PDA measurements can be directly correlated with the pattern, the magnitude and the number of PD.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114272927","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
Introductory remarks on nanodielectrics 纳米电介质导论
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963496
Michel Frechette, Michel Trudeau, H. Alamdari, Sabin Boily
{"title":"Introductory remarks on nanodielectrics","authors":"Michel Frechette, Michel Trudeau, H. Alamdari, Sabin Boily","doi":"10.1109/CEIDP.2001.963496","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963496","url":null,"abstract":"There is today the neologism \"nanotechnology\" around which much effervescence is consolidating. This scientific wave is complex in nature with multiple ramifications: The domain extends widely including in fact old and newer concepts. At this point of time, a focused perspective revealing the status and incidences of the domain on new materials, especially dielectrics and their insulating possibilities, is desirable. Thus, a personalized overview is given here, offering finally a tentative definition of \"nanodielectrics\".","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122940788","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: 101
Corona-induced degradation of nonceramic insulator housing materials 非陶瓷绝缘子外壳材料的电晕诱导降解
2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225) Pub Date : 2001-10-14 DOI: 10.1109/CEIDP.2001.963625
V. Moreno, R. Gorur
{"title":"Corona-induced degradation of nonceramic insulator housing materials","authors":"V. Moreno, R. Gorur","doi":"10.1109/CEIDP.2001.963625","DOIUrl":"https://doi.org/10.1109/CEIDP.2001.963625","url":null,"abstract":"Nonceramic insulators (NCI) can be subjected to corona for long periods of time even under relatively clean conditions due to localized high electric field brought about by design and/or manufacturing deficiencies. Resistance to corona-induced degradation of NCI housing materials is an important factor that impacts NCI long-term reliability, and is the focal point of this paper. Two sources of corona. have been investigated: corona from a metal electrode, and corona from water droplets. Field inspections were performed on 230 and 500 kV insulators to demonstrate the existence of corona even under relatively clean and dry conditions. Three commonly used NCI housing materials, namely high temperature vulcanized (HTV) silicone rubber, ethylene propylene diene monomer (EPDM) and a blend of EPDM and silicone polymer have been evaluated. Data gathered from electrical and physicochemical analyses show that corona induced degradation is dominantly due to a combination of electro-chemical reactions rather than thermal effects.","PeriodicalId":112180,"journal":{"name":"2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131221140","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: 14
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