刘杰,赵洪,田明,朱贺,关兵.一种可以测量高频电流的FBG电流互感器[J].光电子激光,2015,26(6):1067~1073 |
一种可以测量高频电流的FBG电流互感器 |
An optical current transformer for high frequency based on FBG |
投稿时间:2014-12-10 |
DOI: |
中文关键词: 电流互感器 光纤光栅(FBG) 高频电流 |
英文关键词:current transformer fiber Bragg grating (FBG) high frequency current |
基金项目:黑龙江省自然科学基金面上项目(F2015044)资助项目 (1.哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨 150080; 2. 中国电信 黑龙江省分公司,黑龙江哈尔滨 150080; 3.中国人民大学,北京 100000) |
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中文摘要: |
为测量交流电流的,提出了一种由超磁致伸缩材料(GMM)与光纤光栅(FBG)相结合作 为传感器探头的电流互感器,实现了工频电流的测量,在0.33~100 A范围内具有很好的线性度,满量程精度达到0.33%;对 电流互感器的幅频特性进行理论分析和实验研究,计算表明获得GMM材料的谐振频率为46.5kHz,实验测 得电流互感器在5.0kHz范围内具有平坦的的幅频特性,最高可测频 率达到20.4kHz,谐振频率为46.5kHz,适用 于高频电流的测量。 |
英文摘要: |
For the measurement of AC current,the paper presents a current transformer based on giant magnetostrictive material (G MM) and fiber Bragg grating (FBG),which is used as the sensor probe,the ferrite material is applied to build magnetic system,and the narrow line width laser is used to realize the demodulation of FBG by locking the operating point.The current transformer can measure the f requency current,which can obtain good linearity within 0.33-100A,with 0.33% full scale accuracy.In thi s paper,the amplitude-frequency characteristics of the current transformer are focused by theoretical analysi s and experiment.The resonance frequency of 46.5kHz for GMM is obtained through simulation.The experimental re sults show that the current transformer has a flat amplitude-frequency characteristics within 5.0kHz rang e,the maximum measurable frequency can reach 20.4kHz,the resonant frequency is 46.5kHz,and it is suita ble for measuring high-frequency current. |
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