西安交通大学电气工程学院,西安,710049
网络首发:2008-04-10,
纸质出版:2008
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刘晔, 陈江波, 束秀梅, 等. 光源调制全光纤电流互感器的研究[J]. 西安交通大学学报, 2008,42(4):436-439.
刘晔, 陈江波, 束秀梅, et al. Fiber Optical Current Transformers Based on Modulated Light Source[J]. 2008, 42(4): 436-439.
介绍了全光纤电流互感器的结构
分析了系统输出信号的特点
指出工频干扰及线性双折射效应是影响系统稳定性的主要问题.提出并实现了基于光源调制的抑制工频干扰方法.该方法利用2000 Hz的方波光源作为互感器的光驱动
系统的输出信息由原来的一路变成了两路
通过两路信息的融合有效地抑制了电路工频干扰.理论分析及实验结果表明
在不增加系统复杂性和硬件投入的条件下
该方法不仅抑制了电路中的低频干扰
还有效地抑制了工频干扰
提高了系统的信噪比
为提高全光纤电流互感器系统的稳定性和可靠性提供了新的方法.
A structure of an optical current transformer is presented. The output of the system is analyzed theoretically and experimentally. The power-line interference and the linear birefringence effect are pointed out as the key barriers for getting the useful signal from the system
and a way based on modulated light source for depressing the power-line interference is verified
where 2 000 Hz square-wave light is considered as the optic supply. For amelioration
the different information is got from two channels to depress the power-line interference by information fusion. The theoretical analysis and experimental results demonstrate that by the improved method the power-line interference is depressed more efficiently
while the signal-to-noise ratio is enhanced obviously.
刘晔,邹建龙,王采堂,等.基于神经网络逆建模的三相光学电流互感器[J].电工电能新技术,2001(4):5-8.
LIU Ye,ZOU Jianlong,WANG Caitang,et al.Three-phase optical current transducer based on neural network inverse modeling[J].Advanced Technology of Electrical Engineering and Energy,2001(4):5-8.
BOHNERT K, BRA ¨NDLE H, BRUNZEL M G,et al.Highly accurate fiber-optic DC current sensor for the electrowinning industry[J].IEEE Transactions on industry Applications,2007,43(1):180-187.
廖延彪.偏振光学[M].北京:科学出版社,2003:156-160.
刘晔,王采堂,苏彦民,等.基于BP网络的三相光学电流互感器的补偿[J].西安交通大学学报,2000,34(6):1-5.
LIU Ye,WANG Caitang,SU Yanmin,et al.BP neural network for linear birefringence of three-phase optical current transducer[J].Journal of Xi'an Jiaotong University,2000,34(6):1-5.
刘晔,王采堂,苏彦民,等.三相光学电流互感器的双折射效应研究[J].西安交通大学学报,2000,34(2):24-27.
LIU Ye,WANG Caitang,SU Yanmin,et al.Birefringence of three-phase optical current transducer[J].Journal of Xi'an Jiaotong University,2000,34(2):24-27.
刘晔,王采堂,韦兆碧,等.三相光学电流传感器的实验研究[J].西安交通大学学报,2002,36(2):127-130.
LIU Ye,WANG Caitang,WEI Zhaobi,et al.Experimental research on three-phase opticalcurrent transducer system[J].Journal of Xi'an Jiaotong University,2002,36(2):127-130.
BOHNERT K, GABUS P, NEHRING J.Temperature and vibration insensitive fiber-optic current sensor[J].Journal of Lightwave Technology,2002,20(2):267-276.
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