Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122997
Sun Yihang, Wu Jianwen, Shi Yanhua, Z. Liying
For the characteristics of intelligent protection for circuit breaker, an intelligent integrated controller of circuit breaker is designed based on dual-core CPU structure.
针对断路器智能保护的特点，设计了一种基于双核CPU结构的断路器智能集成控制器。
{"title":"Design of intelligent integrated controller of circuit breaker based on dual-core CPU","authors":"Sun Yihang, Wu Jianwen, Shi Yanhua, Z. Liying","doi":"10.1109/ICEPE-ST.2011.6122997","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122997","url":null,"abstract":"For the characteristics of intelligent protection for circuit breaker, an intelligent integrated controller of circuit breaker is designed based on dual-core CPU structure.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"38 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":"132403365","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122979
Chen Li-an, Chen Zhiying
An intelligent AC contactor with the function of zero-current interruption based on PIC16F877 microcontroller was presented in this paper. This kind of intelligent AC contactor has features of intelligentization, controllability, benefiting from combining technologies such as electrical equipment, power electronics, microcomputers and sensors. It becomes a reality to break contacts without arc or with less arc by controlling the intelligent AC contactor, particularly by using zero-current interrupt control technology, leading to energy savings, low operating noise, high electrical span, and high operating frequency. The functions and performance of the AC contactor can be substantially improved and to meet the need of smart grid development. Key technologies such as the accuracy and stability of zero-current interrupt of three-phase contactor are also discussed in this paper. We expect this type of intelligent AC contactor to find broad applicability in power distribution systems, especially smart power grids.
{"title":"Research on zero-current interrupt technology of intelligent AC contactor","authors":"Chen Li-an, Chen Zhiying","doi":"10.1109/ICEPE-ST.2011.6122979","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122979","url":null,"abstract":"An intelligent AC contactor with the function of zero-current interruption based on PIC16F877 microcontroller was presented in this paper. This kind of intelligent AC contactor has features of intelligentization, controllability, benefiting from combining technologies such as electrical equipment, power electronics, microcomputers and sensors. It becomes a reality to break contacts without arc or with less arc by controlling the intelligent AC contactor, particularly by using zero-current interrupt control technology, leading to energy savings, low operating noise, high electrical span, and high operating frequency. The functions and performance of the AC contactor can be substantially improved and to meet the need of smart grid development. Key technologies such as the accuracy and stability of zero-current interrupt of three-phase contactor are also discussed in this paper. We expect this type of intelligent AC contactor to find broad applicability in power distribution systems, especially smart power grids.","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":"114383427","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122945
N. Asari, Yo Sasaki, T. Shioiri, J. Sato, M. Homma
For development of high-voltage equipment such as vacuum circuit breakers, it is very important to improve their dielectric breakdown characteristics in a vacuum. It is thus necessary to clarify the breakdown mechanism in a vacuum. It is well-known that these characteristics are influenced by the electrode material and its surface condition[1][2], but the breakdown mechanism has not been clarified. This paper presents measurements of breakdown characteristics and observations of a cross-section after electron beam irradiation. The results are compared with those for no electron beam irradiation. It is thus shown that the breakdown voltage of a CuCr electrode after electron beam irradiation is higher than that for no electron beam irradiation. This is because a fine Cr layer is formed on the electrode surface.
{"title":"Breakdown characteristics of CuCr electrode after electron beam irradiation in vacuum","authors":"N. Asari, Yo Sasaki, T. Shioiri, J. Sato, M. Homma","doi":"10.1109/ICEPE-ST.2011.6122945","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122945","url":null,"abstract":"For development of high-voltage equipment such as vacuum circuit breakers, it is very important to improve their dielectric breakdown characteristics in a vacuum. It is thus necessary to clarify the breakdown mechanism in a vacuum. It is well-known that these characteristics are influenced by the electrode material and its surface condition[1][2], but the breakdown mechanism has not been clarified. This paper presents measurements of breakdown characteristics and observations of a cross-section after electron beam irradiation. The results are compared with those for no electron beam irradiation. It is thus shown that the breakdown voltage of a CuCr electrode after electron beam irradiation is higher than that for no electron beam irradiation. This is because a fine Cr layer is formed on the electrode surface.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"11 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":"134634606","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123012
Yu-Min Kim, Sung-Hoon Cho, K. Lim, Kil-Sou Kim, B. Jang
In this paper, research on the electromagnetic repulsion force in Molded Case Circuit Breaker (hereafter MCCB) is presented. Between two contact-tips, there is a point of contact that is a very small area. Therefore, a current between a fixed-tip and operative-tip flows through a very small area, which is the point of contact. Then, due to current concentration, magnetic flux density between two contact-tips produces the electromagnetic repulsion force. Because repulsion force can improve interrupting ability of MCCB, it is important to analyze the electromagnetic repulsion force, which occurs between two contacts. To analyze electromagnetic repulsion force, the Finite Element Method (hereafter FEM) is adapted. Further, through the interrupting test, correlation between repulsion force and interrupting ability was confirmed. We calculated the electromagnetic repulsion force via five models and tested interrupting ability via one model.
{"title":"Analysis on electromagnetic repulsion force in Molded Case Circuit Breaker","authors":"Yu-Min Kim, Sung-Hoon Cho, K. Lim, Kil-Sou Kim, B. Jang","doi":"10.1109/ICEPE-ST.2011.6123012","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123012","url":null,"abstract":"In this paper, research on the electromagnetic repulsion force in Molded Case Circuit Breaker (hereafter MCCB) is presented. Between two contact-tips, there is a point of contact that is a very small area. Therefore, a current between a fixed-tip and operative-tip flows through a very small area, which is the point of contact. Then, due to current concentration, magnetic flux density between two contact-tips produces the electromagnetic repulsion force. Because repulsion force can improve interrupting ability of MCCB, it is important to analyze the electromagnetic repulsion force, which occurs between two contacts. To analyze electromagnetic repulsion force, the Finite Element Method (hereafter FEM) is adapted. Further, through the interrupting test, correlation between repulsion force and interrupting ability was confirmed. We calculated the electromagnetic repulsion force via five models and tested interrupting ability via one model.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"112 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":"126875424","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122991
Aimin Liu, Hong-kui Zhang, Guang Yang, Xin Lin
In order to obtain larger starting thrust to meet the requirement of the mechanical property of high-voltage circuit breaker, the cylindrical linear induction motor (C-LIM) applied to the circuit breaker operating mechanism was proposed and optimized in this paper. Firstly, the multi-objective particle swarm algorithm was proposed and used in the global optimization of cylinder linear induction motor according to its characteristic. Secondly, the mathematical model of multi-objective optimization algorithm was established based on the grain of subgroup algorithm, and the programs were compiled by using the Matlab engineering calculation tool, at the same time the visual interface was developed. Finally, the results indicated that the multi-objective optimization design is obviously better than the single optimization design. The thrust are increased, the structure and size of motor are also reduced. So it can increase the usability of the C-LIM drive mechanism and provide the basis for the design of miniaturization of circuit breaker operating mechanism.
{"title":"Research and application of multi-objective particle swarm optimization in linear induction motor operating mechanism","authors":"Aimin Liu, Hong-kui Zhang, Guang Yang, Xin Lin","doi":"10.1109/ICEPE-ST.2011.6122991","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122991","url":null,"abstract":"In order to obtain larger starting thrust to meet the requirement of the mechanical property of high-voltage circuit breaker, the cylindrical linear induction motor (C-LIM) applied to the circuit breaker operating mechanism was proposed and optimized in this paper. Firstly, the multi-objective particle swarm algorithm was proposed and used in the global optimization of cylinder linear induction motor according to its characteristic. Secondly, the mathematical model of multi-objective optimization algorithm was established based on the grain of subgroup algorithm, and the programs were compiled by using the Matlab engineering calculation tool, at the same time the visual interface was developed. Finally, the results indicated that the multi-objective optimization design is obviously better than the single optimization design. The thrust are increased, the structure and size of motor are also reduced. So it can increase the usability of the C-LIM drive mechanism and provide the basis for the design of miniaturization of circuit breaker operating mechanism.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"37 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":"121913014","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122908
Dongwei Li, L. Di Rienzo
Progress in current measurement technology is of paramount importance in power monitoring and protection of power systems. To this aim, magnetic sensors arrays are proposed as current transducers able to meet the requirements of fast and accurate current measurement within a wide amplitude and frequency range. This paper investigates the impact of the displacement of the magnetic sensors on the accuracy of the current transducer when measuring transient currents in a three-phase rectangular conductors system. The dependence on the number of sensors is also investigated.
{"title":"Robustness analysis of magnetic sensor arrays for current sensing","authors":"Dongwei Li, L. Di Rienzo","doi":"10.1109/ICEPE-ST.2011.6122908","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122908","url":null,"abstract":"Progress in current measurement technology is of paramount importance in power monitoring and protection of power systems. To this aim, magnetic sensors arrays are proposed as current transducers able to meet the requirements of fast and accurate current measurement within a wide amplitude and frequency range. This paper investigates the impact of the displacement of the magnetic sensors on the accuracy of the current transducer when measuring transient currents in a three-phase rectangular conductors system. The dependence on the number of sensors is also investigated.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"14 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":"121704394","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6123029
Enyuan Dong, Zhenwei Zhang, Yongxing Wang, G. Yin, J. Zou, Xuanshu Chen
In this paper, a new type mechanism actuator, magnetic force actuator(MFA) is presented. MFA overcomes the limit use of Permanent Magnetic Actuator(PMA) in long length stroke circuit breaker and is beneficial to realize fast-adjust of electrical control. To complete dynamic simulation of MFA, Ansys needs to calculate the magnetic flux linkage and magnetic force in the dynamic process, and this needs to interface with Matlab. Microsoft Visual Basic (VB) is good at interface design and its application on the interface with other software is excellent, the parameters of MFA can be integrated in the VB interface and transmitted to APDL and Matlab, which reduces the complexity and improves programming efficiency.
{"title":"Dynamic characteristic simulation of magnetic force actuator based on Visual Basic interface programming","authors":"Enyuan Dong, Zhenwei Zhang, Yongxing Wang, G. Yin, J. Zou, Xuanshu Chen","doi":"10.1109/ICEPE-ST.2011.6123029","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6123029","url":null,"abstract":"In this paper, a new type mechanism actuator, magnetic force actuator(MFA) is presented. MFA overcomes the limit use of Permanent Magnetic Actuator(PMA) in long length stroke circuit breaker and is beneficial to realize fast-adjust of electrical control. To complete dynamic simulation of MFA, Ansys needs to calculate the magnetic flux linkage and magnetic force in the dynamic process, and this needs to interface with Matlab. Microsoft Visual Basic (VB) is good at interface design and its application on the interface with other software is excellent, the parameters of MFA can be integrated in the VB interface and transmitted to APDL and Matlab, which reduces the complexity and improves programming efficiency.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"11 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":"125529576","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122952
Yundong Cao, Shu Wang, Xiaoming Liu, Zhiming Qi
A 252kV single-break SF6 circuit breaker (CB) is taken as the investigation model in this paper, and six different nozzles with different blade contour and 3D gas flow field model are presented based on N-S equations. And the variations of the cold flow field parameters in arc-quenching chamber with different nozzles have been obtained using finite volume method (FVM) during the interrupting. The influences of blade contour on the gas flow parameters, such as velocity, pressure-temperature ratio and pressure are analyzed by changing the angle, number and the height of the blade. And the reasonable nozzle blade structure of the rotary-gas CB is obtained.
{"title":"Research on rotary-gas high voltage SF6 circuit breaker with novel blade nozzle Part II: Motion behavior analyses under cold flow interruption","authors":"Yundong Cao, Shu Wang, Xiaoming Liu, Zhiming Qi","doi":"10.1109/ICEPE-ST.2011.6122952","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122952","url":null,"abstract":"A 252kV single-break SF6 circuit breaker (CB) is taken as the investigation model in this paper, and six different nozzles with different blade contour and 3D gas flow field model are presented based on N-S equations. And the variations of the cold flow field parameters in arc-quenching chamber with different nozzles have been obtained using finite volume method (FVM) during the interrupting. The influences of blade contour on the gas flow parameters, such as velocity, pressure-temperature ratio and pressure are analyzed by changing the angle, number and the height of the blade. And the reasonable nozzle blade structure of the rotary-gas CB is obtained.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"82 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":"127728806","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122956
R. Smeets, L. H. te Paske
Generator circuit breakers differ in various aspects from standard distribution breakers. One of the main differences is in the electrical stresses during fault current interruption. This situation will be discussed in the present contribution, along with the standardization status and the backgrounds of these special requirements.
{"title":"Testing of SF6- and vacuum generator circuit breakers","authors":"R. Smeets, L. H. te Paske","doi":"10.1109/ICEPE-ST.2011.6122956","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122956","url":null,"abstract":"Generator circuit breakers differ in various aspects from standard distribution breakers. One of the main differences is in the electrical stresses during fault current interruption. This situation will be discussed in the present contribution, along with the standardization status and the backgrounds of these special requirements.","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":"129064011","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}
Pub Date : 2011-10-01DOI: 10.1109/ICEPE-ST.2011.6122938
Daochun Huang, Zhibin Qiu, J. Ruan, Gao-bo Wu, Shengwen Shu, C. Liao
In order to analyze the potential distributions of U-shaped arrangement 126 kV triple-break vacuum circuit breaker prototype, formed with fiber-controlled vacuum circuit breaker modules, and electric field distributions interior vacuum interrupters, three dimensional finite element models were established. The potential distributions and the electric field distributions interior vacuum interrupters of four models, including single pole prototype without supporting structure, single pole prototype with supporting structure, double poles prototype with supporting structure, three phases double poles prototype with supporting structure were analyzed with the established finite element models. The calculated results indicate that, under U-shaped arrangement, the static voltage distributions of the triple-break vacuum circuit breaker are non-uniform. The static voltage distribution of the high voltage break is more than 65%, and suitable voltage grading measures are needed. The supporting structure can be not installed in the circuit breaker in series prototype test.
{"title":"Static voltage distribution of 126 kV modular multi-break vacuum circuit breaker prototype","authors":"Daochun Huang, Zhibin Qiu, J. Ruan, Gao-bo Wu, Shengwen Shu, C. Liao","doi":"10.1109/ICEPE-ST.2011.6122938","DOIUrl":"https://doi.org/10.1109/ICEPE-ST.2011.6122938","url":null,"abstract":"In order to analyze the potential distributions of U-shaped arrangement 126 kV triple-break vacuum circuit breaker prototype, formed with fiber-controlled vacuum circuit breaker modules, and electric field distributions interior vacuum interrupters, three dimensional finite element models were established. The potential distributions and the electric field distributions interior vacuum interrupters of four models, including single pole prototype without supporting structure, single pole prototype with supporting structure, double poles prototype with supporting structure, three phases double poles prototype with supporting structure were analyzed with the established finite element models. The calculated results indicate that, under U-shaped arrangement, the static voltage distributions of the triple-break vacuum circuit breaker are non-uniform. The static voltage distribution of the high voltage break is more than 65%, and suitable voltage grading measures are needed. The supporting structure can be not installed in the circuit breaker in series prototype test.","PeriodicalId":379448,"journal":{"name":"2011 1st International Conference on Electric Power Equipment - Switching Technology","volume":"12 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":"114266237","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}
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