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2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)最新文献

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Experimental study on ionic wind measurement of an electrohydrodynamically induced gas-liquid two-phase flow field by particle image velocimetry 粒子图像测速法测量电流体动力诱导气液两相流场离子风的实验研究
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885232
R. Honma, R. Ohyama
{"title":"Experimental study on ionic wind measurement of an electrohydrodynamically induced gas-liquid two-phase flow field by particle image velocimetry","authors":"R. Honma, R. Ohyama","doi":"10.1109/CEIDP.2000.885232","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885232","url":null,"abstract":"Ionic wind of an electrohydrodynamically induced gas-liquid two-phase flow fields is experimentally measured. Since the electrohydrodynamic liquid flow motion will be created by an interrelation of ionic wind along the gas-liquid interface, new approaches are required to analyze this electrohydrodynamic gas-liquid two-phase flow type. In this work, ionic wind measurement along the stratified dielectric liquid was carried out by a particle image velocimetry where the measurement system was used to derive the flow velocity fields from time-series digital images of flow field illuminated by a light sheet for computer tomography. The visualization images of ionic wind flow patterns obtained by a smoke wire method, and the qualitative optical characterization of the ionic wind velocity fields is shown in detail. The ionic wind characteristics along the gas-liquid interface are discussed from the experimental results.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121205176","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
Multistage electrohydrodynamical pump 多级电液动力泵
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885226
M. Bologa, I. Kozhevnikov, I.A. Kozhukhari
{"title":"Multistage electrohydrodynamical pump","authors":"M. Bologa, I. Kozhevnikov, I.A. Kozhukhari","doi":"10.1109/CEIDP.2000.885226","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885226","url":null,"abstract":"The results of experimental investigations of multistage EHD pump with latticed electrodes are presented. The dependencies of flow rate, head and efficiency on difference of potentials between electrodes and interelectrode gap distance for pumps with various number of stages are obtained. The influence of breakdown in interelectrode gap on EHD pump characteristics is studied.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123369906","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
Influence factors for the self-healing of metallized polypropylene capacitors 金属化聚丙烯电容器自愈的影响因素
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.883998
Dai Xin, L. Fuchang, Li Jin, Yao Zonggan, Wang Nanyan
{"title":"Influence factors for the self-healing of metallized polypropylene capacitors","authors":"Dai Xin, L. Fuchang, Li Jin, Yao Zonggan, Wang Nanyan","doi":"10.1109/CEIDP.2000.883998","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.883998","url":null,"abstract":"After the local breakdown of the metallized film, the self-healing of the capacitor is influenced by several factors, including the capacitance of metallized capacitor, pressure, as well as the applied voltage. In this paper, they are investigated fundamentally in reference to their influence towards the insulation recovery of the metallized polypropylene. Single metallized polypropylene film and metallized film capacitors are used as experimental samples to study the effect of these factors after local breakdown of the film under the conditions of impregnation and nonimpregnation. The results show that, these factors impose their influences via the infusion energy passing the breakdown path. It is also found that excess the infusion energy will be adverse to the self-healing of metallized polypropylene capacitors.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132411763","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: 17
Surface flashover characteristics of polymeric rods with temperature gradient 温度梯度下聚合物棒的表面闪络特性
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884081
Y. Mizuno, Y. Tone, K. Naito
{"title":"Surface flashover characteristics of polymeric rods with temperature gradient","authors":"Y. Mizuno, Y. Tone, K. Naito","doi":"10.1109/CEIDP.2000.884081","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884081","url":null,"abstract":"Surface flashover characteristics of polymeric rods were investigated experimentally by artificially creating a temperature gradient along the rod. Two types of temperature gradient were studied. In one case, the temperature gradient was obtained by cooling a portion of the rod with liquid nitrogen, because such temperature gradients are known to occur along electrical insulating materials of superconducting power apparatus. In the other case, part of the rod was warmed with a heater since such temperature gradients along an insulating material may occur at a contact point with a conductor of power apparatus operating at ambient temperature. In both cases, the flashover voltages were reduced in the case of higher temperature gradients.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128496164","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 behavior of filled silicone rubbers: effects of cross-linking agent and surface modified fillers 填充硅橡胶的介电性能:交联剂和表面改性填料的影响
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885255
E. Tuncer, S. Gubanski, B. Nettelblad, H. Hillborg, K. Dowling
{"title":"Dielectric behavior of filled silicone rubbers: effects of cross-linking agent and surface modified fillers","authors":"E. Tuncer, S. Gubanski, B. Nettelblad, H. Hillborg, K. Dowling","doi":"10.1109/CEIDP.2000.885255","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885255","url":null,"abstract":"The influence of amount of cross-linking agent and surface modification of alumina trihydrate (ATH) fillers on dielectric properties of silica filled silicone rubber were investigated. It was found that the cross-linking agent did not affect the dielectric properties of the silica filled silicone rubber if the samples were electrically aged before. There were two clear processes in these systems, relaxation polarization and DC conduction. Introduction of surface modified and non-surface modified ATH fillers changed these characteristics to low frequency dispersion dominated. The losses were higher in the sample with silanized ATH filler. The losses increased with surface modified fillers when the filler concentration increased.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"297 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128607647","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
Space charge development in XLPE insulation with and without tree retardant subjected to DC field 带和不带阻燃剂的交联聚乙烯绝缘在直流电场作用下的空间电荷发展
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884026
M. Abou-Dakka, A. Bulinski, S. Bamji
{"title":"Space charge development in XLPE insulation with and without tree retardant subjected to DC field","authors":"M. Abou-Dakka, A. Bulinski, S. Bamji","doi":"10.1109/CEIDP.2000.884026","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884026","url":null,"abstract":"Using the Thermal Step Method (TSM), which is a completely non-destructive technique to determine space charge in polymeric insulation, the evolution of the TSM current response and the space charge density during long-term dc aging have been studied. The measurements were performed on two types of XLPE insulation with significantly different electrical tree initiation properties. One type of XLPE contained a hindered amine light stabilizer (HALS) to retard electrical treeing while the other did not. The type of antioxidants and their concentration were the same in both materials. Care was taken during insulation aging to avoid any partial discharges. Space charge density was determined from the TSM measurements using inverse matrix calculations. Although the overall space charge quantities accumulated in both materials during aging were similar, the charge distributions showed notable differences.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130619245","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
Hydrophobicity transfer properties of silicone rubber contaminated by different kinds of pollutants 不同污染物污染下硅橡胶的疏水转移性能
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885303
W. Shaowu, Liang Xidong, Guan Zhicheng, Wang Xun
{"title":"Hydrophobicity transfer properties of silicone rubber contaminated by different kinds of pollutants","authors":"W. Shaowu, Liang Xidong, Guan Zhicheng, Wang Xun","doi":"10.1109/CEIDP.2000.885303","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885303","url":null,"abstract":"Considering various contaminated environments in the field, research on the hydrophobicity transfer properties of different pollutants is necessary for the proper selection and maintenance of polymeric insulators. In the paper, hydrophobicity of SR polluted by several kinds of pollutants such as kieselguhr, kaolin, Tonoko, metal oxides and inorganic salts were investigated. Contact angle measurement and FTIR analysis have been used to trace the hydrophobicity transfer process. It is found that the inherent chemical properties and the physical morphology of pollutants play important roles on the hydrophobicity transfer property.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127023471","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: 19
Gas insulated substation (GIS) for HVDC 高压直流气体绝缘变电站(GIS)
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884054
F. Messerer, W. Boeck
{"title":"Gas insulated substation (GIS) for HVDC","authors":"F. Messerer, W. Boeck","doi":"10.1109/CEIDP.2000.884054","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884054","url":null,"abstract":"The paper deals with the topic of a Gas Insulated Substation (GIS) optimized for HVDC. The electric field distribution of DC systems is mainly controlled by the conductivity k of the dielectric media. Surface charge accumulation leads to field distortion. In order to prevent this phenomenon on the spacer of such systems, a conducting coating has been realised. Investigations are made with a real 145 kV-GIS-setup. The influence of the surface coating on the field distribution can be proved with this experimental setup. Numerical calculations based on the Boundary-Element-Method (BEM) are made to investigate the influence of surface resistivity and surface charge on the field distribution of a spacer. The charge accumulation on an uncoated spacer is measured, simulated and discussed. With a coated spacer it is possible to prevent this charging.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"432 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122874169","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: 33
Optimized design for insulator pollution performance, an easy to use method free of conventional limitations 针对绝缘子污染性能进行优化设计，是一种不受常规限制的简单易行的方法
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885269
R. Axelsson, T. Johansson
{"title":"Optimized design for insulator pollution performance, an easy to use method free of conventional limitations","authors":"R. Axelsson, T. Johansson","doi":"10.1109/CEIDP.2000.885269","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885269","url":null,"abstract":"Designing insulators for high or modest contamination is complicated and object for simplification in order to make design and production easier. The limitations of creepage distance, CD, as design base has become recognized. Exaggerated with excesses in material and production, or insufficient with risk of failure in service, the end result is unavoidably increased total cost. The obvious restriction is that CD considers distance. The conductivity of a surface is, apart from the specific surface conductivity, dependent only on surface shape. Referred to as form factor when measuring test results and K-value, Kv, when used for design, this parameter describes the shape exactly and is the true design base. The problem is that Kv is mathematically complicated. Software development has enhanced CAE programs and solved this problem. But these programs are custom made and not readily accessible. Herein we present a method to determine insulators Kv in a manual but convenient way with acceptable results, valid for all insulator materials and processes. Examples are presented and evaluated for CD and Kv comparison. General conclusion is that replacing CD with Kv, while maintaining all other design parameters, will result in simultaneous cost and performance improvements.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128134329","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 oil electrification on ac breakdown between metallic electrodes 油带电对金属电极间交流击穿的影响
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885234
G. Massala, O. Lesaint, O. Moreau
{"title":"Influence of oil electrification on ac breakdown between metallic electrodes","authors":"G. Massala, O. Lesaint, O. Moreau","doi":"10.1109/CEIDP.2000.885234","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885234","url":null,"abstract":"This paper presents experimental investigations concerning the influence of space charge on the ac breakdown of moving mineral oil, between metallic electrodes. Space charges are injected in oil with sharp metallic points, and carried into the breakdown test cell through a perforated ground electrode. Breakdown voltages are measured under ac voltage in rod-sphere or sphere-sphere electrode at 5 and 10 cm gap distances. The results show that, whatever the flow rate of oil and the amount of charge injected, no significant influence on ac breakdown voltage is observed. As a consequence, it appears that the deleterious effect of static electrification of oil in devices like power transformers cannot be simply ascribed to a degradation of the intrinsic oil performance.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114768545","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
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