2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)最新文献_第2页

The relationship research between the permittivity and internal pressure in vacuum interrupters 真空灭流器介电常数与内压的关系研究

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412570

Fan Xing-ming, Liu Xu-dong, Zhang Xin, Zou Qi-tao, Fan Jian-rong, Liang Cong, Shi Wei-jian

{"title":"The relationship research between the permittivity and internal pressure in vacuum interrupters","authors":"Fan Xing-ming, Liu Xu-dong, Zhang Xin, Zou Qi-tao, Fan Jian-rong, Liang Cong, Shi Wei-jian","doi":"10.1109/DEIV.2012.6412570","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412570","url":null,"abstract":"The Vacuum Circuit Breakers (VCBs) are typical types in the medium voltage distribution switches, and the internal pressure (P) in the vacuum interrupters affects the working quality and life. With the development of national smart power grids and the maintenance system based on reliability, on-line monitoring of the internal pressure in the vacuum interrupters becomes necessary and urgent. With the increasing of voltage level in VCBs, requirements of, internal pressure on-line diagnosis devices were highly recommended by Smart Grid, especially for the 35kV, 72.5kV and above voltage level. At present, the popular domestic on-line monitoring methods are achieved by detecting the potential of vacuum interrupter shield (Uc), the solving analysis of Uc makes significance meaning to the on-line monitor theory of the internal pressure. The relationship of the internal pressure(P) and sr was studied, the expression of P and 8r was concluded on dry air condition, and emulation mode conditions was provided for studying the relationships of internal pressure(P) and potential of vacuum interrupter shield(Uc). Necessary theoretical and technical support was supplied for the intelligence and condition-based maintenance for VCBs, and this work is valuable for reference engineering application.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"1 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":"129673528","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

Numerical simulation on the influence of some parameters on wire electrical explosion based on a 0D model 基于0D模型的一些参数对电线电气爆炸影响的数值模拟

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412547

Yao Li, Z. Shi, S. Jia, Lijun Wang, Xingwen Li

引用次数: 0

Create multi-layer vacuum ion-plasma coatings based on Ti-C-Si in an additional ion bombardment 在额外的离子轰击中创建基于Ti-C-Si的多层真空离子等离子体涂层

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412580

S. R. Shehtman, V. Mukhin, R. Kireev

引用次数: 0

Static electric field distribution of hybrid circuit breaker based on Ansoft 基于Ansoft的混合式断路器静电场分布分析

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412458

C. Xian, Duan Xiongying, Chen Jianhua, Liao Minfu, Z. Jiyan

引用次数: 3

Simulation of metal vapor breakdown after interrupting a vacuum arc 真空电弧中断后金属蒸气击穿的模拟

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412448

Zhenxing Wang, Yingsan Geng, Zhiyuan Liu

引用次数: 3

Investigation and optimization of magnetron discharge in a vacuum switch 真空开关磁控管放电的研究与优化

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412556

X. Godechot, C. Nicolle, M. Hairour, S. Olive, P. Picot

引用次数: 2

Influence of no-load operation and current switching on breakdown characteristics of high voltage vacuum interrupters at contact gap 30mm 空载运行和电流切换对高压真空灭弧触点间隙30mm击穿特性的影响

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412450

Yingyao Zhang, Zhiyuan Liu, Yingsan Geng

{"title":"Influence of no-load operation and current switching on breakdown characteristics of high voltage vacuum interrupters at contact gap 30mm","authors":"Yingyao Zhang, Zhiyuan Liu, Yingsan Geng","doi":"10.1109/DEIV.2012.6412450","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412450","url":null,"abstract":"It is important to understand dielectric strength of vacuum interrupters after no-load operation and current switching, which reflects a dielectric condition of the vacuum interrupters operating in field. Especially there is no such data available for high voltage vacuum interrupters with contact gaps reaching 30mm. The objective of this paper is to experimentally investigate the influence of three kinds of switching operations on the standard lightning impulse voltage breakdown characteristics of high voltage vacuum interrupters with a contact gap 30mm. The three kinds of switching operations are “closing without current / breaking without current”, “closing without current / breaking with 5kA current” and “closing without current / breaking dc current”. Therefore we designed six high-voltage vacuum interrupters with butt type contacts. The experimental results revealed that the conditioning process became slowly and the breakdown voltage followed the Weibull distribution after the three kinds of operations. And the operation “closing without current / breaking 5kA current” will increase the 50% breakdown voltage U50 of the vacuum interrupter from 340kV to 394kV. The U50 of the vacuum interrupter after the operation “closing without current / breaking without current” will increase from 340kV to 362kV. The operation “closing without current / breaking dc current” will increase the dielectric strength. As the current is increasing. The U50 increased from 385kV to 395kV with the breaking current 450A dc 500ms. And the U50 increased from 385kV to 437kV with the breaking current 750A dc 500ms.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"77 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":"125740606","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

Influence of supply and load circuit parameters on the chopping phenomena of vacuum interrupters 电源和负载电路参数对真空断路器斩波现象的影响

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412488

P. Halbach, V. Hinrichsen, K. Ermeler, E. Taylor, J. Teichmann

{"title":"Influence of supply and load circuit parameters on the chopping phenomena of vacuum interrupters","authors":"P. Halbach, V. Hinrichsen, K. Ermeler, E. Taylor, J. Teichmann","doi":"10.1109/DEIV.2012.6412488","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412488","url":null,"abstract":"Vacuum interrupters are the state of the art technology for breaking short-circuit currents and load currents in medium-voltage systems. Consequently, further applications may be established for vacuum switchgear technology. For each new application, the characteristics of vacuum interrupters have to be observed. One of these is current chopping that results in high overvoltages when switching off inductive loads. It is well known from literature that this behavior is strongly dependent on the contact material of the interrupter contacts. For example, copper-chromium has been established for the most circuit breaker applications in medium and high voltage levels. To compare the different materials and their properties, a test circuit is necessary which helps to measure the chopping current strictly according to the test circuit parameters. In this research project, it was possible to show that the measured chopping currents are influenced by inductivities and capacities both in the load and in the supply circuit. This result is of high importance for the interpretation of phenomena in practical applications. Also, the impact of the supply voltage level was investigated to validate the measurements that were performed at lower voltages.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"7 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":"130170168","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

Breakdowns of vacuum interrupters behind front of a lightning impulse 雷击脉冲后的真空断路器击穿

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412453

L. Rylskaya

引用次数: 0

The method of power capacitor partial discharge signal extraction based on several algorithms fusion 基于几种算法融合的电力电容器局部放电信号提取方法

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2012-09-01 DOI: 10.1109/DEIV.2012.6412470

Huang Zhi-chao, Yan Hong-yan, Fan Xing-ming, Yang Sheng-zhen, Li Zhen, Liang Cong

{"title":"The method of power capacitor partial discharge signal extraction based on several algorithms fusion","authors":"Huang Zhi-chao, Yan Hong-yan, Fan Xing-ming, Yang Sheng-zhen, Li Zhen, Liang Cong","doi":"10.1109/DEIV.2012.6412470","DOIUrl":"https://doi.org/10.1109/DEIV.2012.6412470","url":null,"abstract":"Partial discharge (PD) is the initial sign of power capacitor insulation failure, and an effective extraction and analysis method of PD signal in power capacitor can improve the effectiveness of the on-line fault monitoring. The method which based on wavelet threshold denoising and mathematical morphology alternate mixing filter is put forward in this paper. First, the PD signal which includes noise is wavelet decomposed with the proper wavelet function and scale, and each layer of wavelet coefficients is extracted. Then appropriate flat structure element is chosen aimed at the scales of wavelet coefficients, and the mathematical morphology alternate mixing filter is used to filter out the noise and get a new wavelet coefficients. Choosing the appropriate threshold rules for the new wavelet coefficients, the wavelet coefficients after the threshold treatment is wavelet reconstructed and the PD signal after denoising is got. The wave distortion mean square error eMSE and SNR are chosen as the indicators to analyze and compare the denoising effects of wavelet threshold denoising method and the fusion denoising method. The results show that the fusion method can effectively remove the noise and keep the original shape characteristic of the signal better.","PeriodicalId":130964,"journal":{"name":"2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)","volume":"9 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":"115664443","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