| 零磁通传感器的研究 |
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| 引用本文： | 刘君,吴广宁,周利军,吕玮,王万岗,马果. 零磁通传感器的研究[J]. 电力自动化设备, 2009, 29(8) |
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| 作者姓名： | 刘君 吴广宁 周利军 吕玮 王万岗 马果 |
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| 作者单位： | 西南交通大学,电气工程学院,四川,成都,610031 |
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| 摘 要： | 分析了传统电流传感器存在的固有误差及其影响因素:根据磁动势方程设计了一种双级结构的电流传感器,以消除励磁误差;由电磁感应定律与磁路定律建立了传感器的仿真模型:采用DSP增益自适应方案,动态调整补偿信号幅值及相位,保证自动补偿励磁电流,使之工作在零磁通状态.测试实验与现场应用证明,设计的零磁通电流传感器准确度可达0.1级.能满足在线监测信号采集的需要.
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| 关 键 词： | 电流传感器 误差 零磁通 补偿 在线监测 |
Zero-flux type current sensor |
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| LIU Jun,WU Guangning,ZHOU Lijun,L(U Wei,WANG Wangang,MA Guo. Zero-flux type current sensor[J]. Electric Power Automation Equipment, 2009, 29(8) |
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| Authors: | LIU Jun WU Guangning ZHOU Lijun L(U Wei WANG Wangang MA Guo |
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| Affiliation: | Southwest Jiaotong University;Chengdu 610031;China |
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| Abstract: | The inherent error and influencing factors of traditional current sensor are analyzed.In order to eliminate the excitation error,a current sensor of two-stage structure is designed according to magnetic momentum equation.By the electromagnetic induction law and the magnetic path law,the sensor simulation model is established.The DSP-gain self-adaptation scheme is used to automatically compensate the excita-tion current by adjusting the amplitude and phase of compensation signal,so that the current sensor is... |
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| Keywords: | current sensor error zero flux compensation online monitoring |
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