2011 1st International Conference on Electric Power Equipment - Switching Technology最新文献_第10页

Influence of arcing conditions on post-arc dielectric strength recovery of VCB—Simulation based on an improved CTM 电弧条件对vcb电弧后介电强度恢复的影响——基于改进CTM的仿真

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123045

Shengwen Shu, J. Ruan, Daochun Huang, Gao-bo Wu

{"title":"Influence of arcing conditions on post-arc dielectric strength recovery of VCB—Simulation based on an improved CTM","authors":"Shengwen Shu, J. Ruan, Daochun Huang, Gao-bo Wu","doi":"10.1109/ICEPE-ST.2011.6123045","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123045","url":null,"abstract":"For vacuum circuit breaker (VCB), the contact surface temperature is still high after high current arcing, evaporation of metal vapor continues with considerable rates. The metal vapor and residual charge at current zero, i.e., the arc memory which depends on arcing conditions, determines the post-arc dielectric strength recovery of VCB. Considering the well-known continuous transition model (CTM) proposed by Andrews and Varey only shows the effect of residual charge on dielectric strength during sheath expanding period, thus, a submodel including metal vapor density and breakdown criteria corresponding to Paschen limit is added to the existing CTM. Moreover, it has taken into account the charge exchange between ions and vapor atoms. Its accuracy is verified by comparing simulation result with test and the other simulation data. Then based on the improved CTM, influence of arcing conditions including arcing time t0, interrupted current amplitude ip and ramp di/dt on the post-arc dielectric strength recovery of VCB are simulated and analyzed.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114959809","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

A coupled three-dimensional fluid-thermal fields analysis of KYN28A-12 switch cabinet KYN28A-12开关柜三维流热场耦合分析

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123032

Junmin Zhang, Chao Gao, Hao Feng, Guang-chao Yan, F. Zhao, D. Yuan, Hongchao Zhao

引用次数: 0

Research on intelligent GIS on-line status monitoring 智能GIS在线状态监测的研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122996

Sheng Chunhong, Zhang Kuwa, Guan Qun

引用次数: 0

Diamond power devices - possbility of high voltage applicatios 金刚石动力装置。高压应用的可能性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123021

S. Yamasaki, T. Matsumoto, K. Oyama, H. Kato, M. Ogura, D. Takeuchi, T. Makino, S. Nishizawa, H. Oohash, H. Okushi

引用次数: 0

An influence of new arc quenching methods for improving the interrupting capacity of low voltage circuit breaker 新型灭弧方法对提高低压断路器开断能力的影响

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122902

Jung-Hun Kwon, Sung-Hoon Cho, K. Lim, Kil-Sou Kim

引用次数: 0

Calculation and verification of current limiting properties for Saturated Iron Core Superconductive Fault Current Limiter 饱和铁芯超导故障限流器限流性能的计算与验证

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123002

Ziqiang Wei, Jingyin Zhang, H. Hong, W. Gong, Y. Xin

引用次数: 2

Analysis on the gas flow characteristic of high voltage SF6 circuit breaker with novel energy separated nozzle 新型能量分离喷嘴高压SF6断路器气体流动特性分析

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123039

Xiaoming Liu, Liying Li, Yundong Cao, X. Leng, Yunxue Zhao

{"title":"Analysis on the gas flow characteristic of high voltage SF6 circuit breaker with novel energy separated nozzle","authors":"Xiaoming Liu, Liying Li, Yundong Cao, X. Leng, Yunxue Zhao","doi":"10.1109/ICEPE-ST.2011.6123039","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123039","url":null,"abstract":"In this paper, the high voltage SF6 circuit breaker (HV SF6CB) was taken as the research object, an axial vortex arc quenching chamber structure with a novel “X-type” guide blade on the nozzle upstream is presented to effectively control the kinetic energy of the free vortex formed by the gas flow and to exchange the energy in the radial direction. During the interruption, the temperature gradient along the radial direction can be generated. In the process of the internal energy exchange, because the outer spin flow of the turbulence gains more kinetic energy than the internal energy loss, which makes the total temperature of the outer rotary flow increase, and the internal gas flow temperature decrease accordingly. In this paper, the novel nozzle is proposed and applied to achieve energy separated vortex movement of the high pressure gas flow to reduce the axial temperature and increase the gas flow capability. And a 550kV SF6 CB was taken as the research object in this paper. By using finite volume method (FVM), the 3D flow field mathematical model under the small capacitive current interruption is proposed and the influence of the X type guide blade structure on flow field is simulated. By solving the gas flow field with complex flow path, supersonic nozzle, viscous, compressible and variable boundaries, the influences of different axial vortex nozzle structure on the velocity and pressure distributions have been achieved. In addition, the comparisons of gas flow distributions in the chamber with and without X type guide blade nozzle were obtained and analyzed.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121260962","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 characteristics for stainless steel electrode and influence of contamination degree of the electrode surface on the breakdown characteristics 不锈钢电极真空击穿特性及电极表面污染程度对击穿特性的影响

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122942

Y. Yamano, Keisuke Akashi, S. Kobayashi, Yoshio Saito

{"title":"Vacuum breakdown characteristics for stainless steel electrode and influence of contamination degree of the electrode surface on the breakdown characteristics","authors":"Y. Yamano, Keisuke Akashi, S. Kobayashi, Yoshio Saito","doi":"10.1109/ICEPE-ST.2011.6122942","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122942","url":null,"abstract":"In this paper, we reported vacuum breakdown characteristics for some kinds of stainless steel electrodes, for example, SUS304, SUS304L, SUS316, SUS316L, SUS310, SUS321 which are stainless steel alloy of different component ratio. These electrodes have different contamination degree on the surface. The contamination degree of the electrode surface is analyzed by the XPS (X-ray Photoelectron Spectroscopy). We investigated the correlation between the contamination degree and breakdown characteristics. Experimental results revealed that the degree of the carbon contamination of the electrodes gave rise to a certain degradation of the saturated breakdown field and the increase of the number of spark conditioning breakdowns to achieve the saturated breakdown field. The electrochemical polishing technique for the stainless steel electrode was effective in the improvement of vacuum breakdown characteristics. According to XPS spectrum for the electrode surface before breakdown test, the process of the electrochemical polishing reduced the carbon contamination. It was found that the saturated breakdown fields after spark conditioning and conditioning speeds had a relation to the degree of contamination for carbon.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116370856","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

Ablation characteristics of the different kinds of polymer insulators 不同种类聚合物绝缘体的烧蚀特性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123062

T. Imae, Y. Kuroki, Kohei Gaja, E. Kaneko, Takehiro Hayashida, Takafumi Nishi

引用次数: 2

Testing of 800 and 1200 kV class circuit breakers 800和1200千伏断路器的试验

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122925

R. Smeets, S. Kuivenhoven, A. Hofstee

引用次数: 1