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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >A Sensitivity-enhanced Fiber Grating Current Sensor Based on Giant Magnetostrictive Material for Large-Current Measurement
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A Sensitivity-enhanced Fiber Grating Current Sensor Based on Giant Magnetostrictive Material for Large-Current Measurement

机译：基于大磁致伸缩材料的灵敏度增强型光纤光栅电流传感器用于大电流测量

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摘要

Currently, in the modern power industry, it is still a great challenge to achieve high sensitivity and uninterrupted-online measurement of large current on the high voltage gridlines. At present, the fiber grating current sensors based on giant magnetostrictive material used in the modern power industry to achieve uninterrupted-online measurement of large currents on high voltage grid lines is a better method, but the sensitivity of this current sensor is relatively low, therefore, it is key to improve the sensitivity of this current sensor. Here we show a sensitivity-enhanced fiber grating current sensor based on giant magnetostrictive material (in the following, simply referred to as the sensitivity-enhanced fiber grating current sensor) that is able to achieve high sensitivity and uninterrupted-online measurement of large currents by means of pressurizing the giant magnetostrictive material. Sampling the power frequency sinusoidal alternating current signals with the amplitudes of 107, 157 and 262 A respectively, based on realistic factors, for the sensitivity-enhanced current sensor, the sensitivities, compared with that of the traditional fiber grating current sensor based on giant magnetostrictive material (in the following, simply referred to as the traditional fiber grating current sensor), were respectively enhanced by 268.96%, 135.72% and 71.57%. Thus the sensitivity-enhanced fiber grating current sensor allows us to solve the issue of high sensitivity and uninterrupted-online measurement of large currents that have been plaguing the power industry in a very simple and low-cost way.
机译：当前，在现代电力工业中，在高压电网上实现高灵敏度和大电流的不间断在线测量仍然是一个巨大的挑战。目前，在现代电力工业中使用基于巨磁致伸缩材料的光纤光栅电流传感器来实现不间断在线测量高压电网线路上的大电流是一种更好的方法，但是该电流传感器的灵敏度相对较低，因此，这是提高此电流传感器灵敏度的关键。在这里，我们展示了一种基于巨型磁致伸缩材料的灵敏度增强型光纤光栅电流传感器（以下简称为灵敏度增强型光纤光栅电流传感器），该传感器能够通过以下方式实现高灵敏度和大电流的不间断在线测量：对巨大的磁致伸缩材料加压的方法。基于现实因素，分别以107、157和262 A的幅度对工频正弦交流信号进行采样，与传统的基于巨磁致伸缩的光纤光栅电流传感器相比，灵敏度增强的电流传感器的灵敏度更高。材料（以下简称为传统的光纤光栅电流传感器）分别提高了268.96％，135.72％和71.57％。因此，灵敏度增强型光纤光栅电流传感器使我们能够解决高灵敏度和大电流不间断在线测量的问题，这些问题已经以非常简单且低成本的方式困扰着电力行业。

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