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1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)最新文献

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Design of an anti-contamination insulator profile by using a computer program 用计算机程序设计了一种防污染绝缘子的外形
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807913
R. Hernandez-Corona, J. L. Fierro-Chavez, M. A. Ponce-Vélez
{"title":"Design of an anti-contamination insulator profile by using a computer program","authors":"R. Hernandez-Corona, J. L. Fierro-Chavez, M. A. Ponce-Vélez","doi":"10.1109/CEIDP.1999.807913","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807913","url":null,"abstract":"A computer program that evaluates the performance of insulator profiles under polluted conditions, by the dry band phenomenon, was developed. Using this computer program, new insulator profiles were evaluated. From this, a better design of insulator profile under pollution conditions for 15 kV overhead distribution lines was achieved. Insulators having such a profile were manufactured and evaluated in a fog chamber according to IEC-507: 1991. The experimental results shown good correlation with the ones obtained by the computer program.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116105635","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
Creation of the charged water aerosol cell with the limiting electric charge 带限制电荷的带电水气溶胶电池的创建
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804652
V.S. Syssoev, I.P. Vereshchagin, Y. Shcherbakov
{"title":"Creation of the charged water aerosol cell with the limiting electric charge","authors":"V.S. Syssoev, I.P. Vereshchagin, Y. Shcherbakov","doi":"10.1109/CEIDP.1999.804652","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804652","url":null,"abstract":"The existing methods and devices for creating the charged atmospheric cells with a total electric space charge being constrained solely by the air strength are considered. The conditions needed to obtain a water aerosol, to charge its outward directed flow and to transport the latter over a grounded surface are studied. The schemes and performances of the charged aerosol generators are illustrated. The requirements for such generators were stated based on the gain and transport of the maximal electric space charge into the investigated space area. The main requirements for a charged aerosol transport are a) to provide a charged particle transfer velocity sufficient for overcoming the space charge induced electric field, b) to restrict the particles leaking out the boundaries of a gasdynamic flow and c) to prevent the discharge and breakdown phenomena at the generator outlet. The basic limiting parameters of the charged spatial areas (i.e. the space charge density, the total charge and its volume, the charged particle lifetime and mobility, the supporting electric current etc.) have been obtained. It has been shown, that under optimal conditions for the charged aerosol generation both transport, a space charge can be gained such that its further increase becomes terminated because of the air disruption (as closely analogous to the thundercloud cell). The parameters of such limiting space charges obtained experimentally in a laboratory have been presented.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122120392","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
Electrical properties of low-density polyethylene prepared by different manufacturing process 不同制造工艺制备的低密度聚乙烯的电性能
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807887
R. Ishii, D. Cho, T. Mori, T. Mizutani, M. Ishioka
{"title":"Electrical properties of low-density polyethylene prepared by different manufacturing process","authors":"R. Ishii, D. Cho, T. Mori, T. Mizutani, M. Ishioka","doi":"10.1109/CEIDP.1999.807887","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807887","url":null,"abstract":"In order to investigate the influence of the manufacturing process on the electrical properties, we used two kinds of low density polyethylene prepared using a metallocene catalyst (mt), linear-low density polyethylene prepared using a Ziegler catalyst (LL) and low density polyethylene by a high-pressure process (LD). mL has the narrowest composition and molecular-weight distributions. We measured the DC and impulse breakdown strengths and current densities at 30/spl deg/C, 60/spl deg/C and 90/spl deg/C. mL had a higher breakdown strength and a lower high-field current than LD and LL. These results were discussed from the point of manufacturing processes.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122275230","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
Dielectric related effects in micromachined electrostatic actuators 微机械静电致动器中介电相关效应
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804655
C. Cabuz
{"title":"Dielectric related effects in micromachined electrostatic actuators","authors":"C. Cabuz","doi":"10.1109/CEIDP.1999.804655","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804655","url":null,"abstract":"The paper discusses the advantages of using electrostatic actuation at the microscale and the issues associated with the use of narrow air gaps (hundreds of Angstroms to hundreds of microns), thin dielectric films (few thousands of Angstroms) and very high fields (over 2 MV/cm) in microdevices. The attention is focused on the touch-mode electrostatic actuators. Studies on the effect of the dielectric and electrode material, of the ambient humidity and gas, of the driving signal and the operating mode are reported. The failure modes are identified and some solutions are given. Electrostatic microactuators operating without failures for over 40 million cycles are reported. Areas of further study are identified. The paper serves as an invitation to the members of the DEI Society to join the efforts of the MEMS community in the study and development of micro-and meso-scale electrostatic actuators.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125207584","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: 10
Space charge distribution of polyimide films in high temperature region 聚酰亚胺薄膜在高温区的空间电荷分布
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804604
Y. Muramoto, M. Nagao, S. Mitsumoto, M. Fukuma, M. Kosaki
{"title":"Space charge distribution of polyimide films in high temperature region","authors":"Y. Muramoto, M. Nagao, S. Mitsumoto, M. Fukuma, M. Kosaki","doi":"10.1109/CEIDP.1999.804604","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804604","url":null,"abstract":"We have been studying the breakdown characteristics of polyimide (PI) films. The purpose of this study is to clarify the effect of space charge on breakdown mechanism of PI films in the high temperature region. The electric strength (Fb) decreased with temperature and the DC conduction current (I) increased with temperature. Between room temperature and 100/spl deg/C, there is no space charge detected in PI films. In the high temperature region, hetero space charge tends to be formed near the anode under the high electric field approaching to the breakdown field, but it decreases just before breakdown. These results show a thermal breakdown process based on the space charge modified conduction current is considered as a possible breakdown mechanism of PI films in the high temperature region.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127731028","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
Comparison of partial discharges in pure SF/sub 6/ and 5% SF/sub 6/-N/sub 2/ gas mixture 纯SF/sub - 6/和5% SF/sub - 6/-N/sub - 2/混合气体部分放电的比较
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804678
S. Meijer, E. Gulski, J. Smit, A. Girodet
{"title":"Comparison of partial discharges in pure SF/sub 6/ and 5% SF/sub 6/-N/sub 2/ gas mixture","authors":"S. Meijer, E. Gulski, J. Smit, A. Girodet","doi":"10.1109/CEIDP.1999.804678","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804678","url":null,"abstract":"The data on partial discharge performance of actual gas insulated systems filled with an SF/sub 6/-N/sub 2/ mixture in service is scanty, although considerable research has gone into the breakdown in gas mixtures. In this paper different aspects to understand the behaviour of a partial discharge have been studied such as the dielectric properties of insulating gases, its inception voltage, effect of gas pressure on PD magnitude and phase-resolved PD patterns, etc. For this study different types of PD sources have been used. Considerable differences have been observed between 4.5 bar SF/sub 6/ gas insulation and the equivalent 11.5 bar 5% SF/sub 6/-N/sub 2/ mixture gas insulation.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126511986","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
Evaluation of aged distribution terminations by characterization techniques 用表征技术评价老化分布终点
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807899
J. Han, B. Lee, Yongjiu Han
{"title":"Evaluation of aged distribution terminations by characterization techniques","authors":"J. Han, B. Lee, Yongjiu Han","doi":"10.1109/CEIDP.1999.807899","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807899","url":null,"abstract":"This study describes the reliability assessment of 13 years service-aged distribution terminations using characterization techniques such as SEM, ESCG DSC/OIT, FTIR, NMR and so on. Characterization of these terminations revealed that the surface of weathersheds had micro-cracks and chalking of fillers by surface aging. Elemental analysis of weathersheds showed that the carbon was decreased and the oxygen was increased due to a little oxidation reaction. In the analysis of oxidation induction time and chemical structure, there were no differences between new and aged terminations. From this study it can be considered that these terminations are relatively sound up to the present. But, composition of material for weathersheds was varied with time and field site. It was confirmed that environmental factors had an effect on the aging through the composition change.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117351462","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
Influence of probe geometry on the response of an electrostatic probe 探针几何形状对静电探针响应的影响
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804610
T. Johansson, G. Crichton, I. W. McAllister
{"title":"Influence of probe geometry on the response of an electrostatic probe","authors":"T. Johansson, G. Crichton, I. W. McAllister","doi":"10.1109/CEIDP.1999.804610","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804610","url":null,"abstract":"The response of an electrostatic probe is examined with reference to the probe geometry. The study involves the evaluation of the probe /spl lambda/ function, from which response-related characteristic parameters can be derived. These parameters enable the probe detection sensitivity S/sub e/ and spatial selectivity S/sub p/ to be qualitatively assessed.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130937662","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: 8
Linear stability of nonpolar liquids confined between plane electrodes 平面电极间非极性液体的线性稳定性
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807928
F. Pontiga, A. Castellanos
{"title":"Linear stability of nonpolar liquids confined between plane electrodes","authors":"F. Pontiga, A. Castellanos","doi":"10.1109/CEIDP.1999.807928","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807928","url":null,"abstract":"The onset of convection of a plane layer of nonpolar liquid subjected to an electric field is examined. Dissociation of ions in the bulk of the fluid and injection of charge at one of the electrodes have been considered. Both processes are modeled by means of field-dependent laws that are applicable in a large variety of nonpolar liquids.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128621466","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
Effect of blend and extrusion on breakdown for low-density polyethylene 共混和挤压对低密度聚乙烯击穿性能的影响
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804645
D. Cho, T. Mori, T. Mizutani, M. Ishioka
{"title":"Effect of blend and extrusion on breakdown for low-density polyethylene","authors":"D. Cho, T. Mori, T. Mizutani, M. Ishioka","doi":"10.1109/CEIDP.1999.804645","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804645","url":null,"abstract":"There are many reports that the technique of polymer blending is a useful method to obtain a new insulating material. We have used two kinds of low-density polyethylene (LDPE) with different densities, 0.9174 and 0.9180 g/cm/sup 3/ and their blends with different blend ratios. There are two XRD peaks due to the different crystallinity, [110] and [020] peaks, respectively. The crystal size estimated from the [020] peak depends upon the blend ratio. We assume that F/sub Blmp/ of LDPE with a blend ratio of 50 wt% is associated with the crystal size estimated from the [020] peak. We also prepare specimens with different mixture methods in order to investigate the relationship between morphology and blending in detail.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125344606","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
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