2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)最新文献_第10页

Experimental test and simulation analysis on surface flashover characteristics of embedded electrode into machinable ceramic in vacuum 真空可加工陶瓷埋入电极表面闪络特性的实验测试与仿真分析

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412466

Xue-Zeng Huang, Jiang-Yang Zhan, H. Mu, Guanjun Zhang, Xin-pei Ma

{"title":"Experimental test and simulation analysis on surface flashover characteristics of embedded electrode into machinable ceramic in vacuum","authors":"Xue-Zeng Huang, Jiang-Yang Zhan, H. Mu, Guanjun Zhang, Xin-pei Ma","doi":"10.1109/DEIV.2012.6412466","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412466","url":null,"abstract":"Surface flashover phenomena in vacuum restrict the overall performance of vacuum solid insulation system. Since accidents caused by surface flashover in vacuum occur constantly, it is always the international highlight to study some new insulating materials and insulation structure with high electric withstanding for vacuum insulation. On the basis of the novel low melting temperature machinable glass ceramics for vacuum insulation system, which has excellent machinable performance and good electrical properties, the samples of embedded electrode into machinable ceramics are machined, and then the samples' flashover voltage of different embedded mode and embedded depth are investigated under nanosecond pulse voltage in vacuum. The electric field distributions and electric field of cathode triple junction (CTJ) are simulated to explain the experimental results. The experimental results indicate embedded electrode in cathode can increase the surface flashover voltage of the sample; with increasing of the embedded depth, the surface flashover voltage tends to be increased. The simulation results indicate embedded electrode in cathode can decrease the electric field of CTJ, and with increasing of the embedded depth, the electric field of CTJ tends to be decreased.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126303272","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

Investigation on influence of current interruption on V-t characteristics of vacuum interrupters 电流中断对真空断流器V-t特性影响的研究

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412438

T. Furukawa, M. Ueda, K. Hidaka, H. Ikeda, A. Kumada, S. Sato, S. Nishimura, H. Shimizu, T. Shioiri, M. Homma

引用次数: 2

Field electron emission current in vacuum interrupters after large inrush current 大涌流后真空灭弧的场电子发射电流

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412476

R. Smeets, S. Kuivenhoven, S. Chakraborty, G. Sandolache

引用次数: 14

Microstructure and properties of vacuum electron beam facing CuCr25 contact material CuCr25真空电子束接触材料的组织与性能

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412571

V. Durakov, S. Gnyusov, B. Dampilon, S. Z. Dehonova, B. I. Ubiennykh

{"title":"Microstructure and properties of vacuum electron beam facing CuCr25 contact material","authors":"V. Durakov, S. Gnyusov, B. Dampilon, S. Z. Dehonova, B. I. Ubiennykh","doi":"10.1109/DEIV.2012.6412571","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412571","url":null,"abstract":"The copper chromium composite coatings produced by the electron beam facing in the vacuum on the cooper substrate have been investigated. The effect of the electron beam facing on the structure and the properties of the coatings has been determined. The chromium based solid solution containing 2, 5-4, 5% at. Cu and the copper based solid solution containing 3-5% at. Cr form in process of the electron beam facing by means of the rapid crystallization of the melting zone. As a result of the electron beam facing, two of the dimensiontype is appears in the surfaced coat (the bimodal distribution): the dendritic chromium is formed during solidification (the primary chromium particle), and the chromium precipitating at the boundaries and the within of the grain (the secondary chromium particle) as a result of age hardening of the solid solution of the copper based material. The commercial arc blowout vacuum chambers were fabricated using Cu75Cr25 contacts faced by electron beam and then passed the tests at Inc “Minusinsk vacuum switch factory - Elektrocomplex”, Minusinsk, RF. The test data exhibit that the electron-beam technology of making the contacts of the vacuum chamber proves to be efficient in improving breaking capacity of vacuum interrupters without sacrificing their other service characteristics.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126742145","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

Experimental investigation on the effect of vacuum arc on removing oxide layer on metal-tube surface in a transverse magnetic field 横向磁场作用下真空电弧去除金属管表面氧化层影响的实验研究

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412511

Z. Shi, Wenhui Li, Na Yan, Yingkui Zhang, Xiaochuan Song, S. Jia, Lijun Wang

引用次数: 1

Experimental research of electrical conductor explosion in the current skinning mode 电流蒙皮方式下电导体爆炸的实验研究

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412600

N. Labetskaya, V. Oreshkin, S. Chaikovsky, I. Datsko, Y. A. Sukovatitsyn, E. Volkov

{"title":"Experimental research of electrical conductor explosion in the current skinning mode","authors":"N. Labetskaya, V. Oreshkin, S. Chaikovsky, I. Datsko, Y. A. Sukovatitsyn, E. Volkov","doi":"10.1109/DEIV.2012.6412600","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412600","url":null,"abstract":"The research of plasma formation on the surface of different metals at the rise rate of the magnetic induction up to 1011 T/s is of interest in terms of energy transport efficiency in the vacuum transmission lines of multi-megaampere pulsed power generators. Such generators with a Z-pinch radiating load are the candidates for realization of inertial confinement fusion. The formation of plasma on the conductor surface occurs due to the electrical explosion in the current skinning mode. In this mode the time of the energy input into a conductor is less than the diffusion time of the magnetic field. From microsecond experiments with megagauss magnetic fields, it is known that the destruction of a conductor occurs in the field with magnetic induction of a few megagausses. The amount of available experimental data on plasma formation in fast-rising megegauss magnetic fields is very limited. Therefore, the experiments on the explosion of cylindrical conductors in the current skinning mode at the rise rate of magnetic field on the conductor surface of (0.8÷1.5)·1010 T/s were carried out on the MIG pulsed power generator (current 2.5 MA, rise time 100 ns). The diameters of conductors made of aluminum, copper and titanium were (1÷3.5) mm. The instant of plasma formation on the conductor surface was registered by detectors of vacuum ultraviolet radiation. We have concluded that in the current skinning mode the some threshold value of the magnetic induction exists and this is that value when the magnetic energy density is enough close to the sublimation energy of the material.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"381 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127141723","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

Capacitive current switching of Vacuum Interrupters and inrush currents 真空灭流器的电容电流开关和涌流

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412494

He Yang, Yingsan Geng, Zhiyuan Liu

{"title":"Capacitive current switching of Vacuum Interrupters and inrush currents","authors":"He Yang, Yingsan Geng, Zhiyuan Liu","doi":"10.1109/DEIV.2012.6412494","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412494","url":null,"abstract":"Capacitive current switching has become increasingly necessary for power factor correction in distribution systems. However, Restrikes are potentially dangerous as they could cause overvoltage which can be harmful to the power system. The dielectric strength of the Vacuum Interrupter (VI) in a capacitive current switching is strongly determined by a condition of the contact surfaces modified by an inrush current. But the influence of the inrush current on restrike phenomenon of VIs is still not well understood. The objective of this paper is to understand the restrike characteristics of VI under the inrush currents of different amplitudes. The peak values of inrush currents are set at 0kA, 2kA, 5kA and 10kA. VIs with a rated voltage of 7.2kV are used. For the each testing operation, VI suffers an inrush current during a making operation. Then a DC recovery voltage appeared across the vacuum interrupters after a switching current (lower than 1 A) is interrupted. The experimental results show that a higher inrush current induces more damages to the contact surfaces, which result in more restrikes. The restrike probabilities are 4.6%, 17.9% and 30.4% on average at the inrush current of 0kA, 2kA and 5kA respectively. VIs cannot be opened after several test operations by a welding at the inrush current of 10kA. The inrush currents with higher amplitude induce the restike occurring earlier than that of lower amplitude during the recovery voltage.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128042387","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 least squares method for VCB electrical endurance parameters predicting research based on breaking current weighted cumulative method 基于分断电流加权累积法的VCB电气寿命参数预测的最小二乘法研究

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412567

Fan Xing-ming, He Jia-min, Zhang Xin, Huang Zhi-chao, Liang Cong, Shi Wei-jian

{"title":"The least squares method for VCB electrical endurance parameters predicting research based on breaking current weighted cumulative method","authors":"Fan Xing-ming, He Jia-min, Zhang Xin, Huang Zhi-chao, Liang Cong, Shi Wei-jian","doi":"10.1109/DEIV.2012.6412567","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412567","url":null,"abstract":"Calculating method of the current index alpha and the theoretical total wear Q is emphatically analyzed based on the electrical endurance curve, which adopt advanced breaking current weighted cumulative method (BCWC) used for predicting the remaining electrical endurance of vacuum circuit breaker (VCBs) contact system. The purpose of this work is to provide a clear and concise engineering description for VCBs contact system on-line monitoring practically. The mathematical and theoretical model of electrical endurance for VCBs contact system is established. The current index alpha and the theoretical wear Q are analyzed in detail based on the method of least squares. Then the parameters predicting method used for prognosticating remaining electrical endurance is proposed. Comparative study was carried out, through which the validity and feasibility of researched method can be verified. The results of this work show that the achievement and the researched procedure are correct and reasonable, which indicate the total wear of a VCB contact system is certain once contact material and structure type is determined. Moreover, based on the method provided, the relation between breaking current and already operation time is also can be gained. So the current index alpha and the theoretical wear Q applying to the advanced breaking current weighted cumulative method are obtained. Finally, the hardware and software for VCB contact system electrical wear on-line monitoring device is fulfilled based on the research results mentioned above. This work can provide some reference for engineering application for electrical endurance on-line monitoring of VCBs contact system.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"69 19","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133753689","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

Property of 126kV vacuum circuit breaker based on three 40.5kV fiber-controlled vacuum interrupter modules in series 基于3个40.5kV光纤控制真空灭弧模块串联的126kV真空断路器特性

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412440

M. Liao, X. Duan, Xian Cheng, Zhihui Huang, J. Zou

{"title":"Property of 126kV vacuum circuit breaker based on three 40.5kV fiber-controlled vacuum interrupter modules in series","authors":"M. Liao, X. Duan, Xian Cheng, Zhihui Huang, J. Zou","doi":"10.1109/DEIV.2012.6412440","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412440","url":null,"abstract":"Interest in the application of vacuum circuit breaker (VCB) with multiple breaks arises from technical and economic considerations. Based on analysis on previous work, a 126kV VCB with triple breaks based on fiber-controlled vacuum interrupter modules (FCVIMs) in series is presented in this contribution. A FCVIM is composed of its own outer insulation, vacuum interrupter, permanent magnetic actuator with its controller and power supply. In order to make a VCB with multiple breaks that can be used for higher voltages, the fiber-controlled vacuum interrupter module can be placed in series just like the building blocks. The fiber-controlled technology is used to control the modules at the low voltage area while permanent magnetic actuator operates at the high voltage area. The VCB with double or triple breaks based on FCVIMs in series were set up for research to obtain the dielectric and breaking capacity property. Dielectric experiments were carried out on a single break FCVIM and the VCB with triple breaks based on FCVIMs in series under lightning impulse voltage. It shows that the 126kV VCB with three breaks in series has a higher breakdown voltage improvement factor. As a result, the breaking capacity was verified and the VCB with triple-breaker are eligible to be applied in the power system.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133436045","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

Charge behavior and partial discharge characteristics on alumina dielectrics under AC voltage application in vacuum 真空中交流电压作用下氧化铝电介质的电荷行为和局部放电特性

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412452

H. Kojima, M. Ishida, N. Hayakawa, M. Hanai, M. Homma, T. Shioiri, H. Okubo

引用次数: 4