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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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Combined electroluminescence and charge profile measurements in polyethylene naphthalate 在聚萘二甲酸乙二醇酯中结合电致发光和电荷剖面测量
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807849
J. Auge, G. Teyssèdre, C. Laurent, T. Ditchi, S. Holé
{"title":"Combined electroluminescence and charge profile measurements in polyethylene naphthalate","authors":"J. Auge, G. Teyssèdre, C. Laurent, T. Ditchi, S. Holé","doi":"10.1109/CEIDP.1999.807849","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807849","url":null,"abstract":"Under DC stress, electroluminescence in polyethylene naphthalate films is stable, current-proportional, above a threshold field of 150 kV/mm. At this field level, the luminescence is thought to be triggered by impact excitation and/or ionization of the luminescent centers by hot electrons, or, alternatively, by electron and hole injection, migration and recombination. Investigation of the internal space charge distribution versus field is believed to constitute a relevant approach to discuss the excitation process.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"118 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":"123497949","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
Limiting crossed magnetic fields in Townsend discharges of Ar+SF/sub 6/ binary mixtures Ar+SF/sub - 6/二元混合物Townsend放电的极限交叉磁场
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804669
M. Dincer, H. Hiziroglu
{"title":"Limiting crossed magnetic fields in Townsend discharges of Ar+SF/sub 6/ binary mixtures","authors":"M. Dincer, H. Hiziroglu","doi":"10.1109/CEIDP.1999.804669","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804669","url":null,"abstract":"The limiting crossed magnetic fields in Townsend discharges of Ar+SF/sub 6/ binary mixtures are evaluated together with pulsed-Townsend mean energies and electron drift velocities along the applied electric field direction. The results are presented in the E/N range of 200 Td-600 Td with SF/sub 6/ content in the mixture varying from 1% to 75% for the corresponding limiting magnetic field.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"5 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":"114231508","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
Image analysis of gas-phase corona discharge induced electrohydrodynamic liquid flow in stratified fluid observed by particle image velocimetry 粒子图像测速法观测层状流体中气相电晕放电诱导电流体动力流动的图像分析
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807920
R. Ohyama, Jen-Shih Chang
{"title":"Image analysis of gas-phase corona discharge induced electrohydrodynamic liquid flow in stratified fluid observed by particle image velocimetry","authors":"R. Ohyama, Jen-Shih Chang","doi":"10.1109/CEIDP.1999.807920","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807920","url":null,"abstract":"Analysis of gas-phase needle-plate corona discharge induced electrohydrodynamic liquid flow in stratified fluid is carried out by image processing from the experimental results. In this paper, the flow velocity distribution is experimentally obtained by a particle image velocimetry with image processing, where the measurement system takes sequential digital images of flow field illuminated by a laser light sheet for computed tomography. The results show that the electrohydrodynamic induced fluid flow direction on an electrode axis is not from needle electrode to plate electrode axis when needle electrode position above liquid layer. For the case of the needle electrode tip immersed into the dielectric liquid, it is well known that the dielectric liquid makes anticlockwise rotation by contraries. Hence, new approaches are required for the analyses of the present type electrohydrodynamic fluid motion. The mechanistic model based on interfacial momentum transfer effects on liquid-phase fluid motion is discussed in detail.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"76 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":"116338867","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
Surface flashover in liquid nitrogen 液氮表面闪络
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.807890
M. Butcher, Andreas A. Neuber, H. Krompholz, L. L. Hatfield
{"title":"Surface flashover in liquid nitrogen","authors":"M. Butcher, Andreas A. Neuber, H. Krompholz, L. L. Hatfield","doi":"10.1109/CEIDP.1999.807890","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.807890","url":null,"abstract":"The use of cryogenic high voltage components to achieve higher energy densities is limited by virtually unknown insulator characteristics for cryogenic conditions. Using a fast coaxial setup, the flashover phenomena of dielectric test samples (Lexan, Alumina) immersed in liquid nitrogen are measured with optical and electrical diagnostics with nanosecond time resolution. The flashover voltage reaches a maximum of 30 kV for a 1.75 mm gap after 3 shots, and averages to about 10 kV after conditioning. Three phases in the discharge development can be distinguished: Phase 1 is a rapid current rise to the mA-regime, with several current spikes with amplitudes of less than 5 mA and durations of typically 20 ns. This phase lasts up to several 100 ns. Phase 2 is characterized by a rapid ionization with a current rise to the impedance limited value of several 100 A of phase 3 in a few nanoseconds. Waveforms of the luminosity follow the ones of the current in general. The physical mechanisms leading to this development, and the difference to the flashover phenomena in vacuum, are discussed qualitatively.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"528 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":"124499227","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
Investigation on charging and polarization effects at dielectric interfaces in laminated HVDC insulation 高压直流层叠绝缘介质界面的充电和极化效应研究
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804586
J. Beyer, P. Morshuis, J. Smit
{"title":"Investigation on charging and polarization effects at dielectric interfaces in laminated HVDC insulation","authors":"J. Beyer, P. Morshuis, J. Smit","doi":"10.1109/CEIDP.1999.804586","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804586","url":null,"abstract":"Conduction current measurements in conjunction with space charge measurements provide deeper insight into the charging behavior of an insulation than one method alone. In this paper results from both test methods obtained for materials used in the construction of solid/liquid laminates are discussed. Special attention is given the comparison between measurable and theoretical values of the amount of charge that accumulates at the dielectric interface as well as the time constants for its build up and decay. Analyzing these differences, additional information is gained regarding the space charge and polarization in such laminated structures. Likewise, space charge distributions in laminates are more reliable assessed this way.","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":"130042359","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
Assessment of optimum SF/sub 6/-air, SF/sub 6/-N/sub 2/, SF/sub 6/-CO/sub 2/ according to particle contamination sensitivity 根据颗粒污染敏感性评价最佳SF/sub 6/-air、SF/sub 6/-N/sub 2/、SF/sub 6/-CO/sub 2/
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804676
S. Ward
{"title":"Assessment of optimum SF/sub 6/-air, SF/sub 6/-N/sub 2/, SF/sub 6/-CO/sub 2/ according to particle contamination sensitivity","authors":"S. Ward","doi":"10.1109/CEIDP.1999.804676","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804676","url":null,"abstract":"The design stress of sulphur hexafluoride Gas Insulated Switchgear (GIS) systems are limited by the harmful effects resulting from the almost inevitable presence of particulate contamination in GIS equipment. Mixing SF/sub 6/ with other gas is a possible way of improving GIS performance under particle contamination condition. This paper studies the breakdown of SF/sub 6/-gas mixture (SF/sub 6/-air, SF/sub 6/-N/sub 2/ and SF/sub 6/-CO/sub 2/) in the presence of contaminating particles under applied DC voltage. The effect of particle dimensions on the breakdown voltage and so on the particle contamination factor (PCF) is presented in this work. The breakdown voltage-pressure characteristics for SF/sub 6/-gas mixture with different fractional concentration of SF/sub 6/ in mixture are carried out. Also, the particle contamination sensitivity is sought for different parameters and to obtain the optimum SF/sub 6/-gas mixtures for the case study. From this study it is concluded that some SF/sub 6/-gas mixture have breakdown gradients comparable to that of pure SF/sub 6/ and are less sensitive to the presence of strong localized fields.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"32 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131573651","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
State-space analysis of partial discharge process 局部放电过程的状态空间分析
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804637
T. Pawlowski, T. Czaszejko
{"title":"State-space analysis of partial discharge process","authors":"T. Pawlowski, T. Czaszejko","doi":"10.1109/CEIDP.1999.804637","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804637","url":null,"abstract":"We analyse the dynamics of the electric field and local surface charge for three kinds of partial discharge (PD) sources: point to dielectric gap, electrode bound cavity and electrical treeing. The data used in our analysis were simulated by a deterministic model proposed by Patsch and Hoof (1998). We demonstrate a dynamic system approach to the analysis of partial discharge data. In particular, we use time-delayed reconstruction of dynamics from a single observable scalar value. We calculate the dominant Lyapunov exponent for the three cases of PD sources. We conclude that the positive Lyapunov exponents obtained in our investigation indicate the possibility of chaotic behaviour. Finally, we address the essential problem of the state-space analysis from experimental PD data: Can the states be identified from the PD interval data? We demonstrate that the phase-space trajectory reconstructed from PD interval data (inter-spike intervals) reveals the deterministic character of the process and potentially can be used in PD identification.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"64 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":"131740958","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
Electrical insulation properties of the polyimide prepared by VDPM VDPM法制备聚酰亚胺的电绝缘性能
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804644
J.K. Park, H.G. Kim, J.T. Kim, D.C. Lee
{"title":"Electrical insulation properties of the polyimide prepared by VDPM","authors":"J.K. Park, H.G. Kim, J.T. Kim, D.C. Lee","doi":"10.1109/CEIDP.1999.804644","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804644","url":null,"abstract":"The polyimide thin films, which are synthesized with pyromellitic dianhydride (PMDA) and 4,4'-diaminodiphenyl ether (DDE), are fabricated by the vapor deposition polymerized method of dry processes. In order to analyze the characteristics required for inter-layer insulation films of semiconductor devices, the molecular structure and uniformity, the variation of the internal composition element, the permeation depth of the upper electrode, and the breakdown strength are experimentally investigated.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"124 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":"130764503","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
Influence of the humidity and the relative air density in impulse breakdown tracks 湿度和相对空气密度对冲击击穿路径的影响
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804680
P. Calva, P. López-Tapia, J. Almiral M, J. Martinez B
{"title":"Influence of the humidity and the relative air density in impulse breakdown tracks","authors":"P. Calva, P. López-Tapia, J. Almiral M, J. Martinez B","doi":"10.1109/CEIDP.1999.804680","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804680","url":null,"abstract":"The influence of the absolute humidity (H) and the relative air density (/spl delta/) in the trajectories of standard lightning impulse point-plane air gap breakdowns were investigated. For negative impulses the minimum radial distances (impact points on the plane) are slightly increased if the humidity is augmented, the maximum radial distances are decreased if the humidity is risen. For positive impulses there is no influence of H in both maximum and minimum distances. If /spl delta/ decreased in general the impact points on the plane are more far away from the axis for negative polarity, if the gap distances are enlarged the influence of /spl delta/ is greater. For positive impulses the effect of /spl delta/ is not significant. This behavior is because H and oxygen (O/sub 2/) produce an inhibition in streamer propagation both in axial advance and in branching due to photon absorption.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"13 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":"131189897","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
The temperature dependence of space charge accumulation and DC current in XLPE power cable insulation 交联聚乙烯电力电缆绝缘中空间电荷积累与直流电流的温度依赖性
1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319) Pub Date : 1999-10-17 DOI: 10.1109/CEIDP.1999.804594
F. N. Lim, R. Fleming
{"title":"The temperature dependence of space charge accumulation and DC current in XLPE power cable insulation","authors":"F. N. Lim, R. Fleming","doi":"10.1109/CEIDP.1999.804594","DOIUrl":"https://doi.org/10.1109/CEIDP.1999.804594","url":null,"abstract":"A cylindrical XLPE power cable sample with 6 mm thick XLPE insulation was heated in stages from 30/spl deg/C to 90/spl deg/C with 50 kV DC applied. At each temperature the current through the XLPE and the accumulation of space charge within it were recorded over several hours. The equilibrium space charge and current densities increased rapidly with increasing temperature. Electron injection/extraction at the electrodes and a spatially-inhomogeneous distribution of permanent dipolar molecules in the XLPE bulk are indicated.","PeriodicalId":267509,"journal":{"name":"1999 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.99CH36319)","volume":"635 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":"132927531","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: 9
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