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A study of high voltage current based on fiber Bragg grating

机译：基于光纤布拉格光栅的高压电流研究

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Recently with the invention of fiber optic Bragg grating (FBG), new kind of sensors based on FBG is increasingly challengingly the dominating position of some traditional sensors, because this new device has some intrinsic capability: Such as multiplexing, self-referencing, optical and mechanical reliability, anti-interference. Especially it brings the significant advantages that they are non-conductive and lightweight, which can allow for much simpler insulation and mounting designs as the application voltage up to 1000kV or more to day . In addition, it doesn't exhibit hysteresis and provide a much large dynamic range and frequency response than iron-core conventional current transformer (CT). In this paper a current sense device based on electromagnetic force is presented. A FBG is held on the armature of an electromagnetism by one end. As current pass through the iron coil, the magnetic force of the coil lengthens the FBG. Then the Bragg wavelength will change via current. By measuring the change of Bragg wavelength of the FBG we can build a relationship between the tested current and the Bragg wavelength. In this paper the configuration of the new device, the theoretical analysis and measurement results are given.
机译：近年来，随着光纤布拉格光栅（FBG）的发明，基于FBG的新型传感器正越来越具有挑战性地成为某些传统传感器的主导地位，因为这种新设备具有某些固有功能：例如多路复用，自参考，光学和光纤。机械可靠性，抗干扰性。特别是它带来了显着的优势，即它们不导电且重量轻，这可以简化绝缘和安装设计，因为当前的应用电压高达1000kV或更高。此外，与铁芯常规电流互感器（CT）相比，它没有磁滞现象，并且具有很大的动态范围和频率响应。本文提出了一种基于电磁力的电流检测装置。 FBG的一端被保持在电磁的电枢上。当电流通过铁线圈时，线圈的磁力会延长FBG。然后，布拉格波长将通​​过电流改变。通过测量FBG布拉格波长的变化，我们可以建立被测电流与布拉格波长之间的关系。本文给出了新设备的配置，理论分析和测量结果。

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