2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)最新文献_第2页

Model for the welding of axial magnetic field vacuum interrupter contacts 轴向磁场真空灭流器触头焊接模型

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763982

E. Taylor, A. Lawall, P. Slade

{"title":"Model for the welding of axial magnetic field vacuum interrupter contacts","authors":"E. Taylor, A. Lawall, P. Slade","doi":"10.1109/DEIV.2016.7763982","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763982","url":null,"abstract":"Vacuum interrupters are required to perform a wide variety of roles within vacuum circuit breakers. One duty is to pass short-circuit currents with the vacuum interrupters' contacts closed for a period of time (1 to 4 seconds), after which the circuit breaker's mechanism must be able to open the contacts, Thus the possibility of contact welding must be minimized. The flow of current through practical contacts generates a repulsive blow-off force, which has to be balanced by a closing force from the circuit breaker mechanism plus the force from atmospheric pressure acting on the vacuum interrupter's bellows. The magnitude of the applied closing force is an important parameter in a vacuum circuit breaker's design. Axial magnetic field (AMF) vacuum interrupters have an additional attractive force because of the parallel currents flowing in the two AMF coils. This force is calculated using three-dimensional finite element analysis (FEA) for practical AMF designs using contact diameters ranging from 62-100 mm. These results are then compared to two dimensional FEA models and analytic formulas, including the effect of the current frequency on the results (DC vs. 50 Hz). These attractive forces can then be combined with the other forces acting on the closed vacuum interrupter contacts to calculate the threshold welding current: the current above which the contacts will form a weld. Calculations of the total closing force compare the difference in the threshold welding current between AMF and other VI contact designs.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122862683","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 the influence of axial magnetic field on anode melting in high-current vacuum arc 轴向磁场对大电流真空电弧阳极熔化影响的研究

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748722

Dingge Yang, S. Jia, Lijun Wang, Z. Shi

{"title":"Investigation on the influence of axial magnetic field on anode melting in high-current vacuum arc","authors":"Dingge Yang, S. Jia, Lijun Wang, Z. Shi","doi":"10.1109/DEIV.2016.7748722","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7748722","url":null,"abstract":"It is well known that the anode melting in high-current vacuum arc (HCVA) can lead to the increase of metal vapor density and liquid droplets around current zero and even the interruption failure. In our previous experiments of cup-shaped axial magnetic field (AMF) contacts, the obvious clockwise swirl flow of liquid copper on anode surface was detected if no external AMF was imposed. In order to clarify the influence of AMF on the anode melting mode in HCVA, a Helmholtz coil was introduced to generate different external imposed AMF which could change the AMF in arc column and a series of experiments were conducted. It was found that the anode melting was weakened and finally disappeared if an increasing homodromous AMF with respect to the AMF generated by the contacts was imposed externally. However, if a reverse AMF was imposed, an anticlockwise swirl flow of liquid copper was detected on the anode surface. The swirl flow is a main source of metal vapor and liquid droplets in HCVA, which is an inducement of arc reignition. The observed phenomenon indicates that the AMF has important influence on the performance of anode melting.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121914752","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

Design and research of high stability repulsion mechanism of 12kV vacuum circuit breaker 12kV真空断路器高稳定斥力机构设计与研究

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763949

Hou Chunguang, Wang Jinjin, Han Ying, Cao Yundong, Cao Yuchen

引用次数: 0

Modeling and simulation of magnetron discharges inside a vacuum interrupter as a method to analyze the vacuum status 对真空灭流器内部磁控管放电进行建模与仿真，分析真空状态

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763969

Kai Hencken, T. Kaufman, D. Gentsch, T. Delachaux

{"title":"Modeling and simulation of magnetron discharges inside a vacuum interrupter as a method to analyze the vacuum status","authors":"Kai Hencken, T. Kaufman, D. Gentsch, T. Delachaux","doi":"10.1109/DEIV.2016.7763969","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763969","url":null,"abstract":"Vacuum Interrupters (VIs) rely strongly on the vacuum level to be below 10-2Pa to be able to operate safely. The vacuum status is normally tested during production to be well below this level (typically below 10-5Pa) and then assumed to be sealed for life (fixed at 30 years). With a larger number of vacuum interrupters now reaching their end of life, there is a renewed interest in assessing their vacuum status in the field. The magnetron gauge principle can be applied for this. The basis for the principle is the formation of an electron trap by electric and magnetic fields across the VI. This article investigates the measurement principle using different modeling and simulation approaches. This allows getting insight into the working principle. Some basic design properties can be understood from the electron orbits. More important is the formation of a closed magnetic trap, which is investigated using an effective potential. More detailed calculations are done using a particle-in-cell approach. This allows the calculation of the build-up of the space charge of the electrons inside the trap, as well as the position and total numbers of electrons trapped. With this, one can determine the proportionality constant between the electrical current measured and the particle density in the VI. A comparison of the outcome of these simulations to own experimental findings and to results found in the literature is finally done.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128338308","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

A model of vacuum arc cathode spot motion in an oblique magnetic field 斜磁场下真空弧阴极光斑运动模型

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748714

I. Beilis

引用次数: 2

Research on structure design of 12kV rotation disc vacuum interrupter 12kV旋转圆盘真空灭弧器结构设计研究

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763985

Cao Yuchen, Li Shuxin, Li Jing, Sun Peng

{"title":"Research on structure design of 12kV rotation disc vacuum interrupter","authors":"Cao Yuchen, Li Shuxin, Li Jing, Sun Peng","doi":"10.1109/DEIV.2016.7763985","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763985","url":null,"abstract":"The synchronization breaking technology which is leading in the vacuum circuit breaker has got general concern in electrical apparatus industry, and the dispersion of each single phase interrupter and operating mechanism parameters is one of the most important influencing factors. Based on this, a new structure with three-phase vacuum interrupter in the same chamber was proposed in this paper, and so as to make the research of the concrete structure design which has applied for a invention patent. In this paper, the entirety structure design of the new rotation disc vacuum interrupter has been studied based on the electric field numerical simulation of the three-dimensional entire field. Aiming at the problem that the structure of the conductor poles in the center of the vacuum interrupter is too compact, the researches on the distribution of electric field and the insulation structure rationality have been studied. Aiming at the contact structure of the new rotation breaking and the design feature of the new arc type shielding case, the researches on structure design of contact and new arc type shielding case have been studied based on electric field analysis. The researches show that the new breaker can reduce its volume while meeting the synchronization of breaking.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130408046","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

Simulation of surface erosion of anode under high-current vacuum arcs 大电流真空电弧作用下阳极表面侵蚀的模拟

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748744

Yunbo Tian, Zhenxing Wang, Yanjun Jiang, Hui Ma, Zhiyuan Liu, Yingsan Geng, Jianhua Wang

引用次数: 1

Time and space resolved video spectroscopy of the vacuum arc during the formation of high-current anode modes 大电流阳极模式形成过程中真空电弧的时间和空间分辨视频光谱

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748733

A. Khakpour, S. Gortschakow, S. Popov, R. Methling, S. Franke, D. Uhrlandt, A. Batrakov, K. Weltmann

引用次数: 3

Research on anatomical observation and ablation conditions of vacuum interrupter with different service years 不同使用年限真空断流器的解剖观察及烧蚀情况研究

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763979

Wenqi Mao, Ting Wang, Xiaoli Duan, Yi Wang, Shuifeng Wu, S. Xiu

{"title":"Research on anatomical observation and ablation conditions of vacuum interrupter with different service years","authors":"Wenqi Mao, Ting Wang, Xiaoli Duan, Yi Wang, Shuifeng Wu, S. Xiu","doi":"10.1109/DEIV.2016.7763979","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763979","url":null,"abstract":"Vacuum interrupter(VI) is the most important part of vacuum circuit breaker(VCB). In this paper, interrupters with different fabrication technology which have been in service for several years were anatomized. The difference of shield case in the interrupters under different fabrication technology, wear phenomenon and arc erosion on contact plate were observed. Based on physical-chemical analysis, the influence of high current arcing on micro appearance of surfaces of contact plate and material composition of erosion area were studied. Scanning electron microscope combining with energy depressive spectroscopy was used to observe the surface morphology of contact plate after large current interrupting tests, and was analyzed the composition content in serious erosion area of contact plate. The results showed that after several operating years there was a melted layer exceeded 100μm thick and copper element of superficial zone was concaved down due to evaporation. Then, ingredient of attachment on shielding case and bellow were analyzed, and comparison of energy spectrum analysis between stainless bellow and brown spot on stain bellow was studied.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128953458","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

Vacuum breakdown from nanostructured fuzzy surfaces 纳米结构模糊表面的真空击穿

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748677

D. Sinelnikov, D. Bulgadaryan, D. Hwangbo, S. Kajita, D. Kolodko, V. Kurnaev, N. Ohno

引用次数: 2