Review of optical fibre sensors for electrical equipment characteristic state parameters detection

Abstract

Optical fibre sensing technology is a powerful method for long-term reliable sensing in harsh environments, which means it is particularly suitable for the detection of electrical equipment characteristic state parameters, including characteristic gases, abnormal vibration, ultrasonic produced by partial discharge, and abnormal temperature rise. This paper reviews several individual optical fibre sensors for different state parameters detection, discusses the advantages, limitations and possible improvement methods, and finally presents the most promising optical fibre sensor for each state parameter.

Advances in fiber‐based quartz enhanced photoacoustic spectroscopy for trace gas sensing

“…SF 6 gas is an ultra-high voltage insulating medium material and widely used in large capacity transformers and high-voltage cables. The fiber-based QEPAS sensor has the advantages of strong anti-electromagnetic interference ability, 60 which makes the sensor system very suitable for power transmission fault diagnosis and analysis. 61 Although single-mode fiber transmission has the advantages of low bending loss, stable transmission mode and no mode noise, it is not yet commercialized and has a high cost of use for mid-infrared wavelength.…”

“…SF 6 gas is an ultra‐high voltage insulating medium material and widely used in large capacity transformers and high‐voltage cables. The fiber‐based QEPAS sensor has the advantages of strong anti‐electromagnetic interference ability, 60 which makes the sensor system very suitable for power transmission fault diagnosis and analysis 61 …”

Fast interrogation of dynamic low‐finesse Fabry‐Perot interferometers: A review

“…Up to now, low‐finesse F‐P sensors play an increasingly important role in dynamic measurement. Related applications can be divided into three types: (a) rapid temperature, pressure, humidity, and other physical quantities measurement, such as rapid temperature sensing for ocean turbulence monitoring, 1 fast humidity measurement for breathing monitoring, 2 fast pressure measurement for pulse wave monitoring; 3 (b) acoustic vibration sensing, such as fiber optic accelerometer, 4 fiber vibrometer, 5 photoacoustic spectroscopy, 6 photoacoustic imaging, 7–9 and partial discharge positioning, 10–12 and so on; (c) dynamic displacement or distance measurements for precision machining 13–15 . Generally, signal demodulation techniques largely determine the performance of the entire sensing system.…”

Fiber Bragg grating based acceleration sensors: a review

“…Pre-warning and forecast can be realized by judging the activity regularity of potential geological hazards in the fields of geological prospecting, oil reservoirs and coal mines through micro-vibration monitoring (Gautam et al , 2019; Kamenev et al , 2016; Wang et al , 2016). The loss caused by equipment failure can be reduced by means of automatic online monitoring (Chen et al , 2019). Then the significance of vibration monitoring in the fields are very obvious, such as perimeter protection, railway, ship, biomedical, aeronautics and astronautics.…”