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1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids最新文献

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Electrical conduction of purified cyclohexane in a divergent electric field 纯化环己烷在发散电场中的导电性
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7324
A. Denat, J. Gosse, B. Gosse
{"title":"Electrical conduction of purified cyclohexane in a divergent electric field","authors":"A. Denat, J. Gosse, B. Gosse","doi":"10.1109/14.7324","DOIUrl":"https://doi.org/10.1109/14.7324","url":null,"abstract":"The mechanisms of field emission and field ionisation are indeed operative but with very drastic conditions i.e., highly purified liquid and very sharp tips.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124717319","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: 105
Prebreakdown phenomena in hydrocarbon liquids 烃类液体中的预击穿现象
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7347
H. Yamashita, M. Hanaoka, H. Amano
{"title":"Prebreakdown phenomena in hydrocarbon liquids","authors":"H. Yamashita, M. Hanaoka, H. Amano","doi":"10.1109/14.7347","DOIUrl":"https://doi.org/10.1109/14.7347","url":null,"abstract":"Prebreakdown current, photo current and conduction current are measured in n-hexane, cyclo-hexane, 1-hexene and benzene. Similar phenomena are observed in the saturated hydrocarbon liquids, n-hexane and cyclohexane, whereas great difference is observed in the unsaturated hydrocarbons, 1-hexene and benzene. In the case of bush-type light emission, the mean velocity is about 100 m/s, and the waveforms of the photo and the prebreakdown currents are pulsive. But in the cases of tree-type and radial-type light emission, the mean velocities of them both are a few km/s, and a continuous light emission with a sudden increase of prebreakdown current are observed just before breakdown.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125816713","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: 69
The effect of pressure on streamer inception and propagation in liquid hydrocarbons 压力对液体烃中流光的产生和传播的影响
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.57089
R. Hebner, E. Kelley, G. FitzPatrick, E. Forster
{"title":"The effect of pressure on streamer inception and propagation in liquid hydrocarbons","authors":"R. Hebner, E. Kelley, G. FitzPatrick, E. Forster","doi":"10.1109/14.57089","DOIUrl":"https://doi.org/10.1109/14.57089","url":null,"abstract":"Since earlier work (1-4) had shown that polarity effects were important, the present study was designed to measure pressure effects under non-uniform field conditions using each polarity. Part of the study was conducted at high magnification to observe the streamer inception voltage under elevated pressures.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133097187","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: 38
The effect of molecular structure on the density dependence of electron mobility and conduction band energy in nonpolar fluids 分子结构对非极性流体中电子迁移率和导带能密度依赖性的影响
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7319
K. Nakagawa, K. Itoh, M. Nishikawa
{"title":"The effect of molecular structure on the density dependence of electron mobility and conduction band energy in nonpolar fluids","authors":"K. Nakagawa, K. Itoh, M. Nishikawa","doi":"10.1109/14.7319","DOIUrl":"https://doi.org/10.1109/14.7319","url":null,"abstract":"The conduction band energy Vo and the electron mobility u in n-, isobutane (n-C4, i-C4), n- and isopentane (n-C5, i-C5) fluids were measured as a function of density N in order to examine the effect of molecular structure on the electronic behaviour in nonpolar fluids. Vo values were determined by photoelectric work function measurements. u values were determined by a time-of-flight methods. The apparatus and procedure for measurements and sample purification technique were described in detail elsewhere[1, 2].","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134346379","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
Analysis of electronic conduction pulses produced in liquid ionization chambers by high energy radiation 高能辐射在液体电离室中产生的电子传导脉冲分析
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.16518
I. Lopes, W. Schmidt
{"title":"Analysis of electronic conduction pulses produced in liquid ionization chambers by high energy radiation","authors":"I. Lopes, W. Schmidt","doi":"10.1109/14.16518","DOIUrl":"https://doi.org/10.1109/14.16518","url":null,"abstract":"The electron pulse shape produced by the passage of an ionizing particle through a liquid filled ionization chamber is analyzed theoretically. Parallel plate chambers are considered. The results are compared with experimental data.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126965041","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
Interaction of partial discharge streamer in cryogenic fluids with polymeric films 低温流体中局部放电流光与聚合物膜的相互作用
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7341
Y. Mizuno, M. Nagao, M. Kosaki, N. Shimizu, K. Horii
{"title":"Interaction of partial discharge streamer in cryogenic fluids with polymeric films","authors":"Y. Mizuno, M. Nagao, M. Kosaki, N. Shimizu, K. Horii","doi":"10.1109/14.7341","DOIUrl":"https://doi.org/10.1109/14.7341","url":null,"abstract":"Erosion by partial discharge and layer effect on breakdown characteristics of polymeric films immersed in cryogenic fluid were examined. The results obtained are following. (1) V-t characteristics of polymeric films immersed in LHe are inferior to those in LN2. (2) Observation of the eroded films by a scanning electron microscope made it clear that partial discharge in LHe produced a mesh-like pattern on the surface while in an uneven surface was formed. The layer effect depends on the waveform and the magnitude of the applied voltage. Under impulse voltage and under ac low voltage, the sample with the larger number of layers shows the higher resistance to breakdown. Under ac high voltage, however, the superiority is reversed. This phenomenon is understood by the occurrence of partial discharge in LN2 between films in the multi-layered sample.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"2008 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127313285","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
Temporal development of the electric field within a stressed oil gap 应力油隙内电场的时间发展
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7345
A. Jaksts, U. Gäfvert
{"title":"Temporal development of the electric field within a stressed oil gap","authors":"A. Jaksts, U. Gäfvert","doi":"10.1109/14.7345","DOIUrl":"https://doi.org/10.1109/14.7345","url":null,"abstract":"Extensive high resolution electro-optic Kerr field mapping measurements have been taken with transformer oil near 20°c using parallel plane electrodes and field strengths near 0.2 MV/m. Static field measurements have been extended to the transient period following the application of a step voltage. Significant space charge effects resulting in electrode fields being enhanced by a factor of up to 2.5 over the average field are observed. This factor is dependent on the gap length. A simple model based on charge carrier generation mainly by dissociation of ion pairs in the liquid bulk is used in the discussion of the observations. Evidence suggests that polarity dependent asymmetries in the gap field distribution arise primarily from differences in the mobilities of the two polarities of charge carrier rather than from injection of carriers at the electrodes.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131500977","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
Studies of the creepage discharge on the surface of liquids 液体表面蠕滑放电的研究
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7340
Y. Nakao, H. Itoh, Y. Sakai, H. Tagashira
{"title":"Studies of the creepage discharge on the surface of liquids","authors":"Y. Nakao, H. Itoh, Y. Sakai, H. Tagashira","doi":"10.1109/14.7340","DOIUrl":"https://doi.org/10.1109/14.7340","url":null,"abstract":"The aspects of propagation of a discharge on the surface of electrolytic aqueous solutions and of an insulating oil, when an impulse voltage is applied to a point- plane gap arranged at the interface between liquids and air, are investigated by a high-speed Schlieren method. Consequently, a polarity effect in shape and size of density changes, features and mechanism of propagation of density changes and their mean propagation velocity are discussed.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121910773","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
The ubiquitous positive streamer 无处不在的积极流光
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-27 DOI: 10.1109/14.7342
W. G. Chadband, M. Sadeghzadeh-Araghi
{"title":"The ubiquitous positive streamer","authors":"W. G. Chadband, M. Sadeghzadeh-Araghi","doi":"10.1109/14.7342","DOIUrl":"https://doi.org/10.1109/14.7342","url":null,"abstract":"Liquid insulation occupies a key position in the range of electrical insulating materials. We can conceive of a volume of empty space to which matter is added, molecule by molecule, until the vacuum is transformed, in stages through low pressure gas, high pressure gas, liquid of low viscosity, liquid of high viscosity, to an amorphous solid. First assumptions might be that as the phase changes then so does the breakdown strength and breakdown mechanism. Yet the indications are that there is no sudden change in the breakdown strength as we go from gas phase to liquid phase at constant density. Why therefore should we suppose a change in mechanism?.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114954989","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: 42
Thermal-buble initiated breakdown characteristics of liquid helium and nitrogen at atmospheric pressure 液氦和液氮在大气压下的热泡引发击穿特性
1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids Pub Date : 1987-07-01 DOI: 10.1109/14.7351
M. Hara, T. Kaneko, K. Honda
{"title":"Thermal-buble initiated breakdown characteristics of liquid helium and nitrogen at atmospheric pressure","authors":"M. Hara, T. Kaneko, K. Honda","doi":"10.1109/14.7351","DOIUrl":"https://doi.org/10.1109/14.7351","url":null,"abstract":"Experiments show that electric field promotes to form a vapor locking in a gap with a hot spot and in turn the formation of locked vapor produces the serious reduction of breakdown voltage. Especially it is argued that the dielectric strength of liquid helium under serious hot spot conditions decreases below that for saturated gas.","PeriodicalId":367847,"journal":{"name":"1987 Ninth International Conference on Conduction and Breakdown in Dielectric Liquids","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125309296","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: 54
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