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《Transactions of China Electrotechnical Society》 2015-09
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External Axial Magnetic Field Excitation System in Intermediate-frequency Current Interruption Experiment

Jiang Yuan;Wu Jianwen;Tang Wei;School of Automation Science and Electrical Engineering Beihang University;  
An external axial magnetic field( AMF) excitation system applied in the intermediate-frequency current interruption experiment is designed. In the system,an intermediate-frequency current transformer( CT) is designed to induct the current in the main circuit and the secondary current is used to excite the Helmholtz coil. So that the AMF which is synchronous with the primary current and regulated by the transformation ratio is generated in axes center of the Helmholtz coil. In this way,the axial magnetic field generated by the contact coil in the current breaker can be simulated. Firstly,the relationship between the inducted magnetic intensity in the axes center of the Helmholtz coil and secondary current is theoretically established. And the designing process for the essential parameters is introduced in detail. Secondly,the equivalent circuit is simplified based on the high magnetic permeability and low leakage inductance of CT. It is proved by calculation that the iron core would not reach saturation when the current root mean square( RMS) value in the circuit is maximal. The phase-difference between the primary current and the secondary current is also verified to be in a reasonable range. Finally,the experiment is implemented to test the excitation system. The magnetic induction intensity is calculated according to the supposed mathematic model of the circuit and the experimental data in the AC experiment. The calculation result of B / I turns out to be consistent with that of the theoretical value,which verifies the effectiveness of this excitation system.
【Fund】: 国家自然科学基金(51377007);; 高等学校博士学科点专项科研基金(20131102130006);; 中央高校基本科研业务费专项资金资助项目
【CateGory Index】: TM501.2
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 Zhai Guofu Zhou Xue Yang Wenying(Harbin Institute of Technology Harbin 150001 China);Experiment on DC Inductive Arcs Driven by Axial and Transverse Magnetic Fields[J];Transactions of China Electrotechnical Society;2011-01
2 Wang Lijun Jia Shenli Liu Yu Yang Dingge Shi Meng Shi Zongqian(State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an 710049 China);Simulation of Anode Thermal Process in Vacuum Arc Under Axial Magnetic Field[J];Transactions of China Electrotechnical Society;2011-03
【Co-citations】
Chinese Journal Full-text Database 6 Hits
1 SHU Shengwen;HUANG Daochun;RUAN Jiangjun;School of Electrical Engineering,Wuhan University;;Review of Numerical Simulation Methods for Arc Interruption Process of Vacuum Switch[J];High Voltage Apparatus;2014-02
2 DONG Huajun;KONG Yihan;DONG Enyuan;GUO Fangzhun;School of Mechanical Engineering,Dalian Jiaotong University;School of Electrical Engineering,Dalian University of Technology;State Grid Pinggao Group Co.,Ltd.;;Breaking Speed Detection of Vacuum Switch Based on Sequence Images[J];High Voltage Engineering;2014-08
3 Dong Huajun;Yang Haijun;Guo Yingjie;Xiang Chuan;Kang Kai;Guo Fangzhun;School of Mechanical Engineering Dalian Jiaotong University;School of Electrical Engineering Dalian University of Technology;School of Electrical Engineering Dalian Maritime University;;3-D Magnetic Field Simulation of a New-type Contact with TMF-AMF for Vacuum Interrupters[J];Transactions of China Electrotechnical Society;2015-05
4 Tian Xiaojing;Feng Yu;Guo Yingjie;Zhao Liang;Dong Huajun;School of Mechanical Engineering Dalian Jiaotong University;;Morphological Detection of Vacuum Switching Arc Based on Wavelet Transform and Morphology Edge Thinning[J];Transactions of China Electrotechnical Society;2015-11
5 BO Kai;QIAO Xinlei;CHEN Mo;ZHAI Guofu;Military Apparatus Research Institute,Harbin Institute of Technology;;Experimental Study of Breaking Arc for High-Power DC Relay[J];Electrical & Energy Management Technology;2015-15
6 WANG Rong-hua,LIU Yun(State Key Laboratory of Advanced Electromagnetic Engineeringand Technology,Huazhong University of Science and Technology,Wuhan 430074,China);Analysis and Comparison of DC Interruption Techniques of Switches[J];Electrical Engineering Materials;2011-04
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 Cheng Lichun Yan Wei (Huazhong University of Science and Technology);Effects of Low Atmospheric Pressure on Motion of Magnetically Driven Arcs[J];Transactions of China Electrotechnical Society;1990-01
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