2011 1st International Conference on Electric Power Equipment - Switching Technology最新文献_第3页

An opening displacement characteristic determined by high-current anode phenomena of vacuum interrupter 由真空灭流器大电流阳极现象决定的开孔位移特性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122941

Liqiong Sun, Li Yu, Zhiyuan Liu, Jianhua Wang, Yingsan Geng

{"title":"An opening displacement characteristic determined by high-current anode phenomena of vacuum interrupter","authors":"Liqiong Sun, Li Yu, Zhiyuan Liu, Jianhua Wang, Yingsan Geng","doi":"10.1109/ICEPE-ST.2011.6122941","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122941","url":null,"abstract":"A vacuum interrupter reaches its interruption limit once high-current anode phenomena occur. It is well-known that contact diameter, contact material, and magnetic field have a significant influence on high-current anode phenomena formation. However, an opening displacement characteristic of movable contact is another contribution for an anode spot formation. The objective of this paper is to propose an opening displacement characteristic for a vacuum interrupter to avoid a formation of high-current anode phenomena. The anode phenomena were observed by using high speed CCD camera. The vacuum interrupters were used in the experiments, which had a glass envelope and there was no stainless shield installed. The diameters of butt type contacts were 12 mm and 25 mm, respectively. The average opening velocities during 10ms after contacts separated were ranged from 1.1m/s to 2.0m/s. And arcing time was adjusted from 2ms to 10ms with a fixed velocity and peak arc current. The results showed that in an anode diagram for each vacuum interrupter, an arcing curve can be obtained, which avoids the regions of intense arc mode and anode spot mode. And this arcing curve corresponds to an opening displacement curve of vacuum interrupter. With the proposed opening displacement curve, high-current anode phenomena will not occur, which has a positive impact on the interrupting performance of the vacuum interrupter.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"132 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":"133789982","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

High voltage high current semiconductor devices and its new application-future power electronics possibilities for social infrastructure 高压大电流半导体器件及其新应用——未来电力电子在社会基础设施方面的可能性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123019

H. Ohashi

引用次数: 3

Research on rotary-gas high voltage SF6 circuit breaker with novel blade nozzle Part III: Arc behavior research 新型叶片喷嘴旋转气体高压SF6断路器的研究第三部分:电弧行为研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122953

Yundong Cao, Shu Wang, Jing Li, Zhiming Qi

引用次数: 0

Coupled simulation of gas flow and dynamic analysis for stroke calculation in circuit breaker 断路器冲程计算中气体流动与动力学分析的耦合模拟

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122969

Y. S. Lee, H. Ahn, S. W. Park, J. H. Lee

引用次数: 1

Experimental investigation on the gas flow motion of puffer circuit breaker 水泵断路器气流运动的实验研究

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123060

Yundong Cao, Renlei Liu, Shuxin Liu, Jing Li

引用次数: 0

Interrupter pressure measurement of a 252 kV SF6 circuit breaker 252kv SF6断路器断流压力测量

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122959

Y. Guan, Weidong Liu, Junhui Wu, Wenyi Li

引用次数: 2

The optimum structural design of low-voltage arc chamber based on simulation and analysis of flow field 基于流场仿真分析的低压电弧室结构优化设计

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123026

Pengfei Zhang, Guoguang Zhang, Yengsan Geng, Yi Zhang, Jie Wu, Boyu Yang

{"title":"The optimum structural design of low-voltage arc chamber based on simulation and analysis of flow field","authors":"Pengfei Zhang, Guoguang Zhang, Yengsan Geng, Yi Zhang, Jie Wu, Boyu Yang","doi":"10.1109/ICEPE-ST.2011.6123026","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123026","url":null,"abstract":"In the process of arc splitting in low voltage switching devices, the flow field in arc chamber plays an important role. In order to accelerate the arc quenching, one of the most common methods is to enhance the gas flow through adding gas material in arc chamber currently. Meanwhile, in the recent research, it has been found that improving the flow field through optimum structural design of arc chamber is another effective way, especially in the recent market trend that the low voltage switching devices are getting more and more small size. In this paper, with the CFD software of Fluent, the model of arc chamber which is from a type of auto transfer switch equipment and the magneto-hydrodynamic model of the arc were established. The distribution of the flow field in arc chamber during arc igniting was calculated. On the basis of analyzing the flow field, an optimum arc chamber was proposed. In the meantime, experimental investigations on the former and the optimum arc chambers were carried out under the same conditions. The arc current and arc voltage were measured. The arc motion process and back commutation phenomenon captured with the high-speed camera were observed. The results show that the interruption performance of the optimum arc chamber is improved prominently.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"51 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":"126176108","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

Contribution of the numerical simulation tools in the high voltage circuit-breaker conception 数值模拟工具在高压断路器概念中的贡献

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123010

G. Marquezin, Lin Yi, Zhenxia Deng, P. Robin-Jouan, Jafeth Rodríguez

引用次数: 0

Development of on-line monitoring system of switchgear 开关柜在线监测系统的开发

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6122992

Li Shuxin, Cao Yundong, Hou Chunguang, L. Xiaoming, Li Jing

{"title":"Development of on-line monitoring system of switchgear","authors":"Li Shuxin, Cao Yundong, Hou Chunguang, L. Xiaoming, Li Jing","doi":"10.1109/ICEPE-ST.2011.6122992","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122992","url":null,"abstract":"For improving reliable operation of switchgear in power system, an approach for on-line monitoring the insulation characteristic and bus-bar temperature rising of the switchgear is proposed in this paper. Through comparing several existing temperature measurement methods for monitoring temperature rising elevation at bus-bas, a new design of temperature monitoring method is proposed. It adopts quick-magnetic saturated current transformer, temperature sensor and infrared transmission to solve the problem of high voltage isolation. For switchgear insulation characteristic monitoring, using the micro-controller unit (MCU) and hardware design, an on-line dielectric loss angle and leakage current measuring method with low cost and high accuracy is implemented. Sensor and signal conditioning circuit design are adopted to ensure the accuracy of leakage current measurement. The frequency voltage signal is extracted by connecting voltage-dividing capacitor on capacitive device terminal and absolute method of measurement and zero-crossing comparison measurement is adapted to measure dielectric loss angle whose principle and calculation approach are presented in this paper. The leakage current and dielectric loss angle can be regarded as criterion to assess switchgear insulation characteristic. Because the monitoring system works in several electromagnetic interference environments, some hardware and software electromagnetic immunity measures are discussed. At last, the system runs in real system and the result shows the on-line monitoring system is stable and reliable which can be provide reference for on-line monitoring system design of switchgear.","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":"129718651","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: 7

Equivalency of synthetic test circuit used for operational tests of thyristor valves for HVDC 用于高压直流晶闸管阀运行试验的综合试验电路的等效性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI: 10.1109/ICEPE-ST.2011.6123023

Zhou Huigao, Yang Xiaohui, Xu Fan

{"title":"Equivalency of synthetic test circuit used for operational tests of thyristor valves for HVDC","authors":"Zhou Huigao, Yang Xiaohui, Xu Fan","doi":"10.1109/ICEPE-ST.2011.6123023","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123023","url":null,"abstract":"With the growth of capacity of high voltage direct current (HVDC) transmission lines, the ratings of thyristor valves, which are one of the most critical equipments, are getting higher and higher. Verification of performance of thyristor valves particularly designed for HVDC project plays an important role in the handover of products between the manufacturer and the client [1]. Conventional test facilities based on philosophy of direct test cannot meet the requirements for modern thyristor valves. New test facilities with high ratings are necessarily built based on philosophy of synthetic test. Over the conventional direct test circuit, the later is an economical and feasible solution with less financial investment and higher test capability. However, the equivalency between the synthetic test and the direct test should be analyzed technically in order to make sure that the condition of verification test in a synthetic test circuit should satisfy the actual operation condition of thyristor valves existing in a real HVDC project, just as in a direct test circuit. Equivalency analysis is focused in this paper, covering the scope of thyristor valves' steady state, and transient state. On the basis of the results achieved, a synthetic test circuit of 6500A/50kV for operational tests of thyristor valves used for up to ±800kV HVDC project has newly been set up and already put into service in xi'an high voltage apparatus research institute (XIHARI), China. Some of the results have been adopted also by a new national standard of China.","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":"129451299","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