2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)最新文献_第6页

A new axial magnetic field contact three-quarters of coil for high-voltage vacuum interrupter and its properties 一种新型高压真空灭流器轴向磁场接触四分之三线圈及其性能

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763972

Xuemin Zhang, Xiaoqin Wang, Qi Guan, Min Li

引用次数: 6

The return of permanent gas pressure in sealed vacuum interrupters 密封真空断流器中永久气体压力的返回

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763991

R. Reeves, L. Falkingham

引用次数: 0

Modeling of high frequency transients of vacuum circuit breaker switching transformers in offshore wind parks 海上风电场真空断路器开关变压器高频瞬态建模

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763950

Xiao Yang, Fang Chun-en, Li Wei, Zhang Bi-de, Ren Xiao, Luo Yan

{"title":"Modeling of high frequency transients of vacuum circuit breaker switching transformers in offshore wind parks","authors":"Xiao Yang, Fang Chun-en, Li Wei, Zhang Bi-de, Ren Xiao, Luo Yan","doi":"10.1109/DEIV.2016.7763950","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763950","url":null,"abstract":"Switching transient as one of the main transient phenomena in power systems has been simulated and measured in many studies. Since offshore wind farms have been integrated to power system only in recent years, the consequences of switching phenomena in offshore wind farms have not yet been thoroughly analyzed. In this paper, the high frequency transient over-voltages of vacuum circuit breaker switching transformers in collection grid of offshore wind parks are studied. Based on the reflection and refraction of traveling waves and vacuum circuit breaker characteristics, the Vacuum circuit breaker has been modeled in PSCAD/EMTDC, which simulates the occurrence of current chopping, re-ignition and pre-strike that will cause high frequency, steep fronted transient voltages and currents. The main reasons for the occurrence of over-voltages in collection grids for offshore wind parks have been analyzed. Finally, the offshore wind farm internal electrical system model has been developed and the case of breaking transformer with VCB in three-phase system has been simulated.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"1 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":"129128868","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

Ion charge state distribution in vacuum arc plasmas for composite Sn-Pb cathodes 复合Sn-Pb阴极真空弧等离子体中离子荷态分布

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748738

V. Frolova, A. Nikolaev, E. Oks, G. Yushkov

引用次数: 2

Modeling and simulation of mixing and interaction of multi-cathode spot vacuum arc jets 多阴极点真空电弧射流混合与相互作用的建模与仿真

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748743

K. Qin, Lijun Wang, Jie Deng, S. Jia

引用次数: 2

Energy distributions and angular distributions of pulsed plasmas based on vacuum surface flashover 基于真空表面闪络的脉冲等离子体能量分布和角分布

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748687

X. Wan, L. Chen, D. Jin, W. Xiang, X. Tan

引用次数: 0

Simulation on the residual axial magnetic field in vacuum DC interruption based on artificial current zero 基于人工零流的真空直流断路剩余轴向磁场仿真

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763997

Yingkui Zhang, Z. Shi, Junliang Li, Qiaosen Wang, S. Jia, Lijun Wang

引用次数: 1

Surface discharge detection of external insulation of outdoor vacuum circuit breaker based on ultraviolet imaging 基于紫外成像的室外真空断路器外绝缘表面放电检测

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7748688

Xuewen Li, Lijun Jin, Jing Cai, Haizhen Shi

{"title":"Surface discharge detection of external insulation of outdoor vacuum circuit breaker based on ultraviolet imaging","authors":"Xuewen Li, Lijun Jin, Jing Cai, Haizhen Shi","doi":"10.1109/DEIV.2016.7748688","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7748688","url":null,"abstract":"Post insulator is one important part of outdoor vacuum circuit breaker's insulation, and surface discharge of post insulator is a main cause of outdoor vacuum circuit breaker insulation faults. A new method is introduced to detect surface discharge, using ultraviolet imaging technology. The images of post insulator's surface discharge are captured with ultraviolet imager. Meanwhile its discharge quantity is measured. After image process of ultraviolet imaging video, three feature parameters are found to indicate surface discharge intensity, which are mean facula area, intermittent facula area and repetition times of intermittent facula. Meanwhile the relationship between the three feature parameters and partial discharge quantity is studied by method of least square support vector machine. It demonstrates that under certain voltage and weather condition, discharge quantity can be calculated with the three feature parameters. A power frequency withstand voltage test system is built to test outdoor vacuum circuit breaker under various climatic conditions. The experiments demonstrate that discharge quantity diagnosed by UV image only have an error less than 6% compared with the discharge quantity measured by PD detector, which provides a useful method of external insulation fault diagnosis of outdoor vacuum circuit breaker based on ultraviolet imaging.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"15 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":"114011131","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

Influence of design parameters on electro-magnetic repulsion mechanism performance 设计参数对电磁斥力机构性能的影响

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7763973

Licai Zhang, Kun Yang, Zhiyuan Liu, Yingsan Geng, Jianhua Wang

{"title":"Influence of design parameters on electro-magnetic repulsion mechanism performance","authors":"Licai Zhang, Kun Yang, Zhiyuan Liu, Yingsan Geng, Jianhua Wang","doi":"10.1109/DEIV.2016.7763973","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7763973","url":null,"abstract":"The objective of this paper is to quantitatively determine the influence of six design parameters on three performance parameters of electromagnetic repulsion mechanism. Six design parameters include mass of moving part, radius of repulsion plate, thickness of the repulsion plate, pre-charged capacitance, initial charging voltage of pre-charged capacitance, and driving coil turns. Three performance parameters include average opening speed, maximum speed and maximum electro-magnetic force on the repulsion plate. Simulation results reveal following conclusions. With the increase of moving part mass, average speed and maximum speed decrease linearly as equation (1, 2). Average speed and maximum speed are in direct proportion with the increase of plate's thickness, initial voltage, driving coil turns and value of pre-charged capacitance as equation (4, 5, 10, 11, 13, 14, 16, and 17). The maximum force increases almost linearly with the increases of the width of plate, the initial charging voltage, riving coil turns and capacitance shown in equation (3, 9, 12, and 15). When radius of repulsion plate is smaller than radius of split coil, three design parameters increase linearly with the increase of radius of repulsion plate shown in equation (6, 7, 8). When radius of plate is bigger, three design parameters is almost same.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"17 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":"122838798","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

Field emission energy spectra fine structure for metallic cathodes coated by dielectric or semiconductor films 电介质或半导体膜涂层金属阴极的场发射能谱精细结构

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI: 10.1109/DEIV.2016.7764028

I. S. Turmyshev, A. Murzakaev, O. Timoshenkova

{"title":"Field emission energy spectra fine structure for metallic cathodes coated by dielectric or semiconductor films","authors":"I. S. Turmyshev, A. Murzakaev, O. Timoshenkova","doi":"10.1109/DEIV.2016.7764028","DOIUrl":"https://doi.org/10.1109/DEIV.2016.7764028","url":null,"abstract":"Presented item deals with investigations of energy spectra fine structure behavior during field emission process for thin film hetero-structures. It is known that fine structures appear in field emission energy spectra for metallic cathodes covered by dielectric or semiconductor thin films, but there is no detailed investigation of rules of such phenomenon. This work presents some results of correlation attempt between transfer matrix method of calculation field emission energy spectrum for metallic cathodes covered by thin film and experimental data obtained for such objects. Tungsten-silicon, tungsten-carbon and tungsten-zirconia hetero-structure cathodes are under consideration. The summary of experimental data of some previous papers is under discussion in terms of computation methods suggested earlier and developed by authors for metallic tip field emission process. It is also discovered from computation that under some conditions of film width and emission voltage it is technically possible to separate particular peak with very thin half-width of energy spectrum while brightness is high. Good correlation between computation and experimental results of field emission process for thin film hetero-structure is obtained.","PeriodicalId":296641,"journal":{"name":"2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"74 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":"124101809","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