| 引用本文: | 肖智宏,程嵩,张国庆,郭志忠,闫培丽,于文斌.全光纤电流互感器灵敏度特性研究[J].电力自动化设备,2017,37(1): |
| XIAO Zhihong,CHENG Song,ZHANG Guoqing,GUO Zhizhong,YAN Peili,YU Wenbin.Research on sensitivity characteristic of fiber optic current transformer[J].Electric Power Automation Equipment,2017,37(1): |
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| 摘要: |
| 在全光纤电流互感器理想数学模型基础上，建立了全光纤电流互感器灵敏度特性数学模型，该模型揭示了单位长度线性双折射、传感环半径和光纤缠绕匝数是影响全光纤电流互感器灵敏度的3个主要因素，并得出结论：最优光纤长度时全光纤电流互感器灵敏度最高，且最优光纤长度只与单位长度线性双折射有关；全光纤电流互感器灵敏度随着光纤缠绕匝数增多而增大，且增大到最优光纤缠绕匝数时，全光纤电流互感器灵敏度最高。进而提出利用有效匝数来平衡灵敏度和光纤利用率。实验验证了理论分析结果的正确性。 |
| 关键词: 全光纤电流互感器 灵敏度 线性双折射 传感环半径 光纤缠绕匝数 比差 |
| DOI：10.16081/j.issn.1006-6047.2017.01.034 |
| 分类号: |
| 基金项目:中央高校基本科研业务费专项基金资助项目(HIT. NSRIF. 2013018) |
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| Research on sensitivity characteristic of fiber optic current transformer |
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XIAO Zhihong1,2, CHENG Song1,3, ZHANG Guoqing1, GUO Zhizhong1, YAN Peili2, YU Wenbin1
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1.School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China;2.State Grid Power Economic Research Institute, Beijing 100052, China;3.School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150001, China
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| Abstract: |
| A sensitivity characteristic model of FOCT(Fiber Optic Current Transformer) is established based on its ideal mathematical model, which reveals that, its three main influencing factors are linear-birefringence per unit length, coil radius and fiber turns; the optimal fiber length with the highest sensitivity is only relevant to the linear-birefringence per unit length; its sensitivity increases along with the increase of fiber turns and reaches the highest at the optimal fiber turns. It is proposed that, the effective turns can be applied to keep the balance between sensitivity and fiber utilization rate. The experimental results prove the correctness of theoretical analysis. |
| Key words: fiber optic current transformer sensitivity linear-birefringence coil radius fiber turns ratio error |
