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基于电致伸缩材料耦合的光纤布拉格光栅-法布里-珀罗级联式光纤电流互感器研究

Study of an FBG-FP Cascaded Optical Fiber Current Transformer Based on Electrostrictive Material Coupling.

作者信息

Chen Cong, Li Zhongyuan, Chen Qichao, Zhang Weichao

机构信息

China Power Huachuang (Suzhou) Electricity Technology Research Co., Ltd., Suzhou 215123, China.

Electric Power Research Institute, State Grid Heilongjiang Electric Power Co., Ltd., Harbin 150030, China.

出版信息

Sensors (Basel). 2025 Apr 15;25(8):2492. doi: 10.3390/s25082492.

DOI:10.3390/s25082492
PMID:40285179
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12031566/
Abstract

Aiming at the issues of low sensitivity and poor resistance to temperature and vibration interference in traditional optical fiber current transformers, as well as the structural complexity of magnetostrictive material-coupled sensors, this paper integrates a high-sensitivity electrostrictive piezoelectric ceramic sensor with an FBG-FP cascaded fiber-optic sensor. This coupling significantly optimizes the sensor structure. By employing orthogonal intensity demodulation to enhance detection sensitivity, and adopting a multi-cycle waveform-averaging method to calculate the DC output light intensity, temperature calibration and compensation are achieved through the correlation between the DC output light intensity and operating points. Experimental results demonstrate that the designed sensor exhibits a detection bandwidth of 0-7 kHz, fully meeting the requirements for power-frequency current detection. Its current measurement range spans 0.15-42 mA, with a minimum measurable current as low as 150 μA. This study provides a compact, high-precision, highly scalable, and adaptable current detection solution for power systems, demonstrating significant engineering application value.

摘要

针对传统光纤电流互感器灵敏度低、抗温度和振动干扰能力差以及磁致伸缩材料耦合传感器结构复杂等问题，本文将高灵敏度电致伸缩压电陶瓷传感器与FBG-FP级联光纤传感器进行集成。这种耦合显著优化了传感器结构。通过采用正交强度解调提高检测灵敏度，并采用多周期波形平均法计算直流输出光强，利用直流输出光强与工作点之间的相关性实现温度校准和补偿。实验结果表明，所设计的传感器检测带宽为0 - 7kHz，完全满足工频电流检测要求。其电流测量范围为0.15 - 42mA，最小可测电流低至150μA。本研究为电力系统提供了一种紧凑、高精度、高可扩展性且适应性强的电流检测解决方案，具有显著的工程应用价值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/3ae10dd70e77/sensors-25-02492-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/c59b662647b4/sensors-25-02492-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/1168a4db64fd/sensors-25-02492-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/7ab57f07a297/sensors-25-02492-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/a9a0f877786b/sensors-25-02492-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/a215a9eaa183/sensors-25-02492-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/2354ba7e44ec/sensors-25-02492-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/f44ce421f891/sensors-25-02492-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/261302b56ecb/sensors-25-02492-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/f6a7db46614f/sensors-25-02492-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/264be973ce35/sensors-25-02492-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/6267f58ff9b8/sensors-25-02492-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/3ae10dd70e77/sensors-25-02492-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/c59b662647b4/sensors-25-02492-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/1168a4db64fd/sensors-25-02492-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/f2d467119524/sensors-25-02492-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/9409cbd6667f/sensors-25-02492-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/7ab57f07a297/sensors-25-02492-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/a9a0f877786b/sensors-25-02492-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/a215a9eaa183/sensors-25-02492-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/2354ba7e44ec/sensors-25-02492-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/f44ce421f891/sensors-25-02492-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/261302b56ecb/sensors-25-02492-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/f6a7db46614f/sensors-25-02492-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/264be973ce35/sensors-25-02492-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/6267f58ff9b8/sensors-25-02492-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e2d3/12031566/3ae10dd70e77/sensors-25-02492-g014.jpg

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本文引用的文献

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A Sensitivity-enhanced Fiber Grating Current Sensor Based on Giant Magnetostrictive Material for Large-Current Measurement.一种基于超磁致伸缩材料的用于大电流测量的灵敏度增强型光纤光栅电流传感器。
Sensors (Basel). 2019 Apr 12;19(8):1755. doi: 10.3390/s19081755.
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A Loop All-Fiber Current Sensor Based on Single-Polarization Single-Mode Couplers.基于单偏振单模耦合器的环形全光纤电流传感器。
Sensors (Basel). 2017 Nov 20;17(11):2674. doi: 10.3390/s17112674.