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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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The charge acquired by a spherical ball bouncing on an electrode: comparison between theory and experiment 球形球在电极上弹跳所获得的电荷:理论与实验的比较
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884000
A. Khayari, A.T. Perez, A. Castellanos
{"title":"The charge acquired by a spherical ball bouncing on an electrode: comparison between theory and experiment","authors":"A. Khayari, A.T. Perez, A. Castellanos","doi":"10.1109/CEIDP.2000.884000","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884000","url":null,"abstract":"This paper presents an experimental study of the dynamics of a conducting ball in a poorly conducting liquid subjected to an electric field. When the applied voltage is constant the ball bounces regularly on the lower electrode. The minimum voltage for lift-off, as well as the time of flight between contacts, depends on the charge acquired by the ball during the contact with the electrode. The experiments have been done with liquids of different conductivities and we have found that there is no influence of the conductivity on the lift-off voltages. We have also registered and studied the current pulses produced when the ball gets in contact with the lower electrode.","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":"115001838","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
Influence of discontinuous pollution width on the surface conduction. Frequency characteristics of the leakage current 不连续污染宽度对表面导通的影响。泄漏电流的频率特性
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885264
M. Teguar, A. Abimouloud, A. Mekhaldi, A. Boubakeur
{"title":"Influence of discontinuous pollution width on the surface conduction. Frequency characteristics of the leakage current","authors":"M. Teguar, A. Abimouloud, A. Mekhaldi, A. Boubakeur","doi":"10.1109/CEIDP.2000.885264","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885264","url":null,"abstract":"In this report, we have examined the influence of the discontinuous pollution layer width on the behavior of a laboratory plan model on which we reproduce the surface state of the 1512L insulator greatly used in Algerian desert areas. The investigations were carried out by analyzing the leakage current magnitude, the phase angle current-voltage, the flashover process and leakage current characteristics. Because the recorded current waveforms include too many distortions, we have elaborated a numerical tool treating the leakage current signal allowing one to determine its frequency spectra using the discrete Fourier transform. The phase angle is determined from voltage and current phase spectra or also from the angles of their fundamentals.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"99 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":"114698992","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
Monitoring system for high energy cosmic ray observation in space environment using advanced electro-optic Pockels techniques 基于先进电光波克尔斯技术的空间环境高能宇宙射线观测监测系统
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884053
H. Saito, T. Urabe, Y. Tanaka, T. Takada, Y. Murooka, N. Tomita
{"title":"Monitoring system for high energy cosmic ray observation in space environment using advanced electro-optic Pockels techniques","authors":"H. Saito, T. Urabe, Y. Tanaka, T. Takada, Y. Murooka, N. Tomita","doi":"10.1109/CEIDP.2000.884053","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884053","url":null,"abstract":"In order to monitor high-energy cosmic rays in a space environment, we succeeded initially in measuring the 2-dimensional birefringence produced due to space charges in dielectric material using a Pockels effect. If high-energy charged particles penetrate into the Pockels crystal and accumulate in it, 2-dimensional birefringence properties are formed in the crystal. In this paper, we introduce the experimental results of measured space charge distribution in the crystal produced due to corona discharges instead of cosmic rays.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"38 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":"130984805","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
Study of the behavior of the electric discharge path in air when an alternating voltage is applied 对施加交变电压时空气中放电路径行为的研究
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885320
J. Martínez, M. Castro, J.C. Scull
{"title":"Study of the behavior of the electric discharge path in air when an alternating voltage is applied","authors":"J. Martínez, M. Castro, J.C. Scull","doi":"10.1109/CEIDP.2000.885320","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885320","url":null,"abstract":"The search of optimization of the external electric insulation has given rise to different investigations, one of them related with the possible influence of the electric discharge path through this insulation. This paper deals with the study of the behavior of the electric discharge path in air when an alternating voltage is applied to a rod-plane configuration. With the purpose of determining how the electrode separation affects the distribution of the impact points of the electric discharges, the statistical methods used were the experimental design and the hypothesis contrast. The experimental work was carried out up to one hundred centimeters of electrode separation taking into account the environmental conditions. Three different behaviors were obtained for the intervals of 30-35, 40-60 and 80-100 cm of electrode separation with significant differences among the mean distances of the impact points in reference to the center point of the rod-plane configuration, but the differences inside these intervals were not relevant.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"34 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":"130278507","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
Computer investigation of spatial-temporal evolution of the thermal instability 热不稳定性时空演化的计算机研究
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.883996
M. Noskov, A. Cheglokov, A. Shapovalov
{"title":"Computer investigation of spatial-temporal evolution of the thermal instability","authors":"M. Noskov, A. Cheglokov, A. Shapovalov","doi":"10.1109/CEIDP.2000.883996","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.883996","url":null,"abstract":"The mathematical model of temperature, electric field and charge density dynamics in the course of thermal breakdown is considered. Development of thermal instability caused by local temperature increase is investigated with the help of numerical simulation. Start conditions and spatial-temporal characteristics of the electrical-thermal structure growth resulting in formation of highly conducting channel and filamentary thermal breakdown are obtained.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"10 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":"121422225","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
Detection of water trees in medium voltage XLPE cables by return voltage measurements 用回电压测量法检测中压交联聚乙烯电缆中的水树
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885299
B. Jonuz, P. Morshuis, H. van Breen, J. Pellis, J. Smit
{"title":"Detection of water trees in medium voltage XLPE cables by return voltage measurements","authors":"B. Jonuz, P. Morshuis, H. van Breen, J. Pellis, J. Smit","doi":"10.1109/CEIDP.2000.885299","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885299","url":null,"abstract":"Several methods are proposed in literature to characterize the state of deterioration of water-treed cable insulation. One of these methods is the return voltage measurement (RVM) method, which was initially introduced as a diagnostic method for oil-paper insulating systems. It is mostly used to determine the condition of the paper insulation of transformer windings. It has been shown that it is possible to use RVM for detection of water trees in XLPE cables. In this paper, a methodology is presented that allows the detection of water trees in PE and XLPE insulated cables, without the need for a reference measurement. Also, the influence of temperature on RVM measurements was examined, for cables with and without water trees.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"23 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":"126081102","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
Accurate field computation of needle-plane gaps using an optimized charge simulation method 利用优化电荷模拟方法精确计算针面间隙场
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.884009
M. Abouelsaad, M. E. El Bahy
{"title":"Accurate field computation of needle-plane gaps using an optimized charge simulation method","authors":"M. Abouelsaad, M. E. El Bahy","doi":"10.1109/CEIDP.2000.884009","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.884009","url":null,"abstract":"A new approach for the computation of electric field distributions of needle-plane gaps is, here described. The approach relies on the charge simulation method (CSM) coupled with genetic algorithms (GAs) for optimal determination of the location and value of the simulating ring charges. Different gap dimensions are studied. Accurate distributions, not only for the potential but also for the electric field, have been obtained throughout the entire interelectrode space. The proposed approach has proved to be more effective and accurate when compared with other techniques.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"27 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":"123822383","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: 12
Space charge behavior of chemically cross-linked and radiation cross-linked polyethylene 化学交联和辐射交联聚乙烯的空间电荷行为
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885239
L. Martinotto, F. Peruzzotti, F. Palmieri, G. Montanari, S. Rai
{"title":"Space charge behavior of chemically cross-linked and radiation cross-linked polyethylene","authors":"L. Martinotto, F. Peruzzotti, F. Palmieri, G. Montanari, S. Rai","doi":"10.1109/CEIDP.2000.885239","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885239","url":null,"abstract":"This paper presents results of an investigation having the aim to compare electrical and oxidative performances of chemically and radiation cross-linked polyethylene. Gamma irradiated and peroxide crosslinked specimens are characterized through dc space charge observations, as well as ac electric strength and oxidation induction time measurements. Similar results, in terms of space charge accumulation and electric strength, are found for specimens having the same gel fraction and obtained by chemical and radiation cross-linking, while longer oxidation times are derived for the latter. This confirms the interest in investigating deeply the possibilities related to gamma radiation crosslinking of polymeric energy cables.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"18 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":"124915331","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
Investigations in order to improve the E.C.T. measurement protocol of large power transformer oil 为改进大型电力变压器油电阻抗测量方案而进行的研究
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885228
P. Mas, T. Paillat, G. Touchard, O. Moreau
{"title":"Investigations in order to improve the E.C.T. measurement protocol of large power transformer oil","authors":"P. Mas, T. Paillat, G. Touchard, O. Moreau","doi":"10.1109/CEIDP.2000.885228","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885228","url":null,"abstract":"The streaming electrification in oil-immersed transformers is the cause of some failures in all the countries of the world. Thus, it is necessary to have reliable servicing and checking tools in order to perform steady and reproducible measurements. One investigation method consists of studying the oil/pressboard couples [Touchard G., and al. 1999]. Another method consists of improving the protocol used for electric characterization of the oil (mainly the protocol combined with the Ministatic Tester). This paper explains an enhancement of this measurement protocol.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"23 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":"121345455","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
The space charge effect on PD and dielectric barrier discharge in XLPE under high AC voltages 高交流电压下空间电荷对交联聚乙烯放电和介质阻挡放电的影响
2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Pub Date : 2000-10-15 DOI: 10.1109/CEIDP.2000.885248
Y. Kwon, I. Park, S. Hwangbo, D. Yi, M. Han
{"title":"The space charge effect on PD and dielectric barrier discharge in XLPE under high AC voltages","authors":"Y. Kwon, I. Park, S. Hwangbo, D. Yi, M. Han","doi":"10.1109/CEIDP.2000.885248","DOIUrl":"https://doi.org/10.1109/CEIDP.2000.885248","url":null,"abstract":"We have measured the space charge distribution in XLPE under AC voltages by the modified PEA method in order to suggest an improved technique of space charge measurement in air-gaps and to show that the space charge formation dominantly affects the PD pattern in the dielectric-barrier structure. The streamer discharges on the XLPE have been measured simultaneously in order to investigate the relation between the space charge and discharge current. Under high AC voltages, the discharge increases to the critical point, but no more increase is shown over the critical point. The voltage and discharge pattern is resolved by space charge. This result indicates that the frequency effect and space charge characteristics of the dielectric material are dominant in the dielectric-barrier-discharge.","PeriodicalId":414762,"journal":{"name":"2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132)","volume":"32 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":"114295610","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
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