| 光学电流互感器的关键技术 |
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| 引用本文： | 黄建华,王佳. 光学电流互感器的关键技术[J]. 电力自动化设备, 2009, 29(12) |
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| 作者姓名： | 黄建华 王佳 |
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| 作者单位： | 国电南京自动化股份有限公司,江苏,南京,210003;国电南京自动化股份有限公司,江苏,南京,210003 |
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| 摘 要： | 通过对光学电流互感器(OCT)的2种主要类型磁光电流互感器(MOCT)和光纤电流互感器(FOCT)的原理介绍和详细分析,指出MOCT的光学传感头加工、测量受光功率波动的影响,分析了FOCT光纤器件的非理想偏振特性,以及光纤材料的Verdet常数的补偿等关键技术和存在问题.MOCT、FOCT共同存在小电流测量时信噪比较低的问题.
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| 关 键 词： | 电子式电流互感器 光学电流互感器 磁光电流互感器 光纤电流互感器 Faraday效应 Verdet常数 |
Key technology of optical current transformer |
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| HUANG Jianhua,WA NG Jia. Key technology of optical current transformer[J]. Electric Power Automation Equipment, 2009, 29(12) |
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| Authors: | HUANG Jianhua WA NG Jia |
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| Affiliation: | HUANG Jianhua,WANG Jia (Guodian Nanjing Automation Co.,Ltd.,Nanjing 210003,China) |
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| Abstract: | The principles of MOCT(Magneto - Optical Current Transducer) and FOCT(Fiber-Optic Current Transformer) are introduced in detail.It is pointed out that the processing and measuring of the optical sensor head of MOCT are influenced by optical power fluctuation and the characteristics of FOCT fiber-optic devices are of nonideal polarization.The key technologies of FOCT,such as the Verdet constant compensation,and its existing problems are explained.The low signal - noise ratio in small current measurement is t... |
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| Keywords: | electronic current transformer optical current transformer magneto-optical current transducer fiber-optic current transformer Faraday effect Verdet constant |
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