2011 1st International Conference on Electric Power Equipment - Switching Technology最新文献_第8页

Development of a chemically non-equilibrium model on decaying SF6 arc plasmas SF6电弧等离子体衰变化学非平衡模型的建立

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123037

Yasunori Tanaka, Katsumi Suzuki

引用次数: 6

Series arc fault diagnosis technology research based on the analysis of current rate 基于电流速率分析的串联电弧故障诊断技术研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123054

Peng Sun, Xiang Gao

引用次数: 4

The strengths and weaknesses of Vacuum Circuit Breaker technology 真空断路器技术的优缺点

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122975

L. Falkingham

引用次数: 8

Collision effects on sheath development after interrupting a vacuum arc 中断真空电弧后对护套发育的碰撞影响

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122927

Zhenxing Wang, Yingsan Geng, Zhiyuan Liu

引用次数: 5

Research on insulation characteristics of multi-break in series extra high voltage vacuum circuit breaker 串联超高压真空断路器多断路绝缘特性研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122931

Xiaoming Liu, Z. Lai, Yundong Cao, Xiangning Liu, J. Zou

{"title":"Research on insulation characteristics of multi-break in series extra high voltage vacuum circuit breaker","authors":"Xiaoming Liu, Z. Lai, Yundong Cao, Xiangning Liu, J. Zou","doi":"10.1109/ICEPE-ST.2011.6122931","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122931","url":null,"abstract":"Multi-break in series is the measurement applied in the design of the extra high voltage vacuum circuit breakers (EHV VCBs). Because of the existence of the coupling and transient variation of the multi-physical fields, the multi-break in series is the uniformed large space-time field system covering the multiple physical parameters. And the insulation performance for each break in the series system change a lot than one break case, and the investigations on the unknown factors are necessary. Based on the application of the EHV VCB applied in the system, the dynamic insulation coordination property covers the dynamic insulation of each break and the design of the multi-break in series. In this paper, the 3D electric field of the triple-break vacuum interrupter (VI) in series is numerically simulated using finite element method (FEM). And the location of the maximum electric field strength and the field distribution along the surface of the movable and fixed contact are calculated and figured out. By the comparative analyses with different insulation structures in series, the variations of the electric field strength are obtained and illustrated. Moreover, by introducing the shielding covers and parallel capacitors, the design of each 72.5 VI unit is accomplished and the insulation property of the 220kV triple-break in series EHV VCB is analyzed.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"95 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":"123184586","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

Fast current protection algorithm for intelligent high voltage circuit breaker 智能高压断路器的快速电流保护算法

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122967

Yun Teng, Jianyuan Xu, Xin Lin

引用次数: 6

Finite element analysis of electric field of outdoor insulators under pollution un-uniform distribution 污染不均匀分布下室外绝缘子电场的有限元分析

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123031

Jianyuan Xu, Wei Su, Yun Teng, Xin Lin

引用次数: 1

Mechanism of impulse voltages breakdown under non-uniform field in vacuum interrupters 非均匀场作用下真空灭流器冲击电压击穿机理研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122948

Yingyao Zhang, Zhiyuan Liu, Yingsan Geng

{"title":"Mechanism of impulse voltages breakdown under non-uniform field in vacuum interrupters","authors":"Yingyao Zhang, Zhiyuan Liu, Yingsan Geng","doi":"10.1109/ICEPE-ST.2011.6122948","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122948","url":null,"abstract":"The objective of this paper is to propose a breakdown model based on the Cranberg “clump” hypothesis for an impulse voltage breakdown under a non-uniform field in high voltage vacuum interrupters. It is assumed that the micro-particles of loosely adhering material are instantaneously detached from a parent electrode surface at a critical voltage given by the Cranberg hypothesis. The influence of non-uniform field distribution on the micro-particle charge has been considered. And the voltage rise rate in impulse voltage occurring during the transit time of the micro-particles to the opposing electrodes has also been considered. For an impulse voltage of constant rise rate applied on the micro-particles, the breakdown voltage of a vacuum gap depends upon the 0.74 power of the gap length for the plate-to-plate contacts with contact gaps 10 to 50 mm. Finally, the hypothesis has been validated by the experiments. And the experimental results show that the impulse breakdown voltage was related to a 0.70 and a 0.79 power of the contact gap depending on a different contact surface roughness. So the experimental results support the Cranberg hypothesis in its application to the impulse breakdown under non-uniform field in vacuum interrupters.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"102 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":"130188672","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

Breakdown voltage characteristics in the SF6/N2 gas mixtures for DS/ES compartment of a 245kV gas insulated switchgear 245kV气体绝缘开关柜DS/ES室SF6/N2混合气体击穿电压特性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123009

Wang-Byuck Suh, Jae-Yun Yim, K. Song, Yong-moo Chang, D. Bae

{"title":"Breakdown voltage characteristics in the SF6/N2 gas mixtures for DS/ES compartment of a 245kV gas insulated switchgear","authors":"Wang-Byuck Suh, Jae-Yun Yim, K. Song, Yong-moo Chang, D. Bae","doi":"10.1109/ICEPE-ST.2011.6123009","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123009","url":null,"abstract":"The SF6 gas insulated switchgear (GIS) is the electric power equipment for transmission and distribution line which reduced the size of the electric power equipments by installing in a sealed tank. Since the size of the GIS is about 1/10 of the air insulated switchgear, high quality insulation gas should be used. However this gas is a source of global warming and its production cost is very high because of expensive insulation material. Therefore, it is necessary either to develop a new relative gas: air and N2 gas or to reduce SF6 gas. The development of N2 mixture gas is needed when we consider safety and economic feasibility. In this study, a full scaled gas chamber for DS/ES compartment was designed and evaluated the breakdown voltage characteristics. In the mixing ratio of SF6/N2=50/50, insulation performance tests for DS/ES compartment for 245kV GIS were also conducted. By comparing and analyzing SF6 gas and SF6/N2 mixture gas, the results will be actually used as the standard reference of insulation design for eco-friendly 245kV GIS.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"1 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":"128812696","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

SCR series technology based on high-speed transient protection 基于可控硅系列技术的高速暂态保护

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122905

Zhankai Li, Jingqin Wang, F. Zhang, Baoyun Li, Mengyu Li, Yuhua Yuan, Peng Zhang

{"title":"SCR series technology based on high-speed transient protection","authors":"Zhankai Li, Jingqin Wang, F. Zhang, Baoyun Li, Mengyu Li, Yuhua Yuan, Peng Zhang","doi":"10.1109/ICEPE-ST.2011.6122905","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122905","url":null,"abstract":"The characteristic parameters of the series valve of SCR (Silicon Controlled Rectifier) will deviate inevitably with growing of working time. The fault components must be determined in shortest time as possible and stop triggering if any element of valve has problem when operating. Otherwise, it will cause other elements over-voltage in the same group easily. As the result of this chain reaction is all the components will be damaged, which will cause major accidents and economic loss. This paper mainly studies the protection technology of SCR valve at high-speed transient. Processing voltage, current, temperature and other parameters of SCR, which are obtained through multi-way in parallel, with high speed device for logical judgment. All pulses of trigger will be stopped transiently once any parameter of SCR is abnormal, to avoid further damage to other SCR. At the same time, the oscillation of torque in motor is avoided. The result of experiment show that the module has reliable diagnostic capability to identify the reduction of SCR capacity dynamicly, which has great value in application of the SCR serial technology.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"45 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":"128560775","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