Fiber bragg grating sensor for hydrogen detection in power transformers

Guo, Ma; Li, Chengrong; Mu, Rui-Duo; Jiang, Jun; Luo, Yingting

doi:10.1109/tdei.2014.6740762

Cited by 20 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Actually, the FBG hydrogen sensor is more suitable for the distributed measurement due to its wavelength multipliable capability, and can be used for temperature compensation. Besides, in recent years it has been demonstrated that the FBG-based hydrogen sensor could be well used for fault detection of power transformer oil [47][48][49].…”

Section: Fiber Grating-based Hydrogen Sensormentioning

confidence: 99%

Recent advancements in optical fiber hydrogen sensors

Zhang

Peng

Qian

et al. 2017

Sensors and Actuators B: Chemical

165

View full text Add to dashboard Cite

A review for optical fiber hydrogen sensors based on palladium (Pd) and tungsten oxide (WO 3) thin films is presented, with specific focus on the measurement methods, probe structures, and sensing properties of different sensors. Firstly, the theoretical models behind the optical fiber hydrogen sensors, as well as their practical limitations, are addressed. Secondly, four mainstream measurement methods, including intensity, fiber Bragg grating (FBG), interferometer, surface plasmon resonance (SPR), which have been proposed to sense the physicochemical properties variations of sensitive thin films when exposed to hydrogen, are reviewed. Then, the advantages and disadvantages of all the above measurement methods are also discussed and compared. Finally, the existing problems and future prospects of optical fiber hydrogen sensors are pointed out.

show abstract

Section: Fiber Grating-based Hydrogen Sensormentioning

confidence: 99%

Recent advancements in optical fiber hydrogen sensors

Zhang

Peng

Qian

et al. 2017

Sensors and Actuators B: Chemical

165

View full text Add to dashboard Cite

show abstract

“…The principle of FBG-based hydrogen sensors is to monitor the central wavelength shift of the reflected Bragg spectrum [75][76][77][78]. When the hydrogen sensitive material is coated on the outer surface of the FBG, the hydrogen concentration in the environment can be figured out when the hydrogen sensitive material expands and generates strain.…”

Section: Hydrogen Sensing Based On Fbgmentioning

confidence: 99%

“…When the hydrogen sensitive material is coated on the outer surface of the FBG, the hydrogen concentration in the environment can be figured out when the hydrogen sensitive material expands and generates strain. Main hydrogen sensing materials includes rare earth alloys, magnesium-based alloys, Ti, Pd and Zr [78,79].…”

Section: Hydrogen Sensing Based On Fbgmentioning

confidence: 99%

Optical sensors for power transformer monitoring: A review

et al. 2020

Self Cite

View full text Add to dashboard Cite

Power transformers play a vital role in power transmission systems from the energy source to the consumption center. In situ diagnostics of the performance of power transformers provides a variety of benefits to ensure reliable electricity transmission. Immunity to electromagnetic interference, high sensitivity, high insulation as well as small dimensions of optical sensing make it very attractive for applications in power transformer monitoring. This paper presents a critical review of various diagnostic methods for power transformers such as partial discharge, dissolved gases, temperature and other important sensing, and optical detection. The advantages and disadvantages of different monitoring methods are carefully discussed and assessed. Finally, the existing technical barriers and future prospects of optical monitoring methods for power transformers are presented.

show abstract

“…These new sensors create a good prospect of developing for the detection of high-sensitivity transformer oil-dissolved gas using on-line monitoring device. However, due to the harsh natural environment of on-line monitoring, complex strong electromagnetic interference, a large number of studies is also needed in selecting these sensors for gas detector [34].…”

Section: According To the Sensors That Collect The Signalsmentioning

confidence: 99%

Experimental Analysis of Modified CNTs-Based Gas Sensor

Tang¹,

Zhang²,

Xiao³

et al. 2017

Electrochemical Sensors Technology

View full text Add to dashboard Cite

As a significant equipment in power system, the operation condition of transformers directly determines the safety of power system. Therefore, it has been an indispensable measure to detect and analyze the dissolved gases in transformers, aiming to estimate the early potential faults in oil-insulated transformers. In this chapter, the adsorption processes between modified carbon nanotubes (CNTs) (CNTs-OH, Ni-CNTs) and dissolved gases in transformers oil including C 2 H 2 , C 2 H 4 , C 2 H 6 , CH 4 , CO, and H 2 have been simulated based on the first principle theory. Meanwhile, the density of states (DOS), adsorption energy, charge transfer amount, and adsorption distance of adsorption process between CNTs and dissolved gases were calculated. Moreover, two kinds of sensors, mixed acid-modified CNTs and NiCl 2 -modified CNTs, are prepared to conduct the dissolved gases response experiment. Then, the gas response mechanisms were investigated. Finally, the results between response experiment and theoretical calculation were compared, reflecting a good coherence with each other. The CNTs gas sensors possess a relatively high sensitivity and fine linearity, and could be employed in dissolved gas analysis equipment in transformer.

show abstract

Fiber bragg grating sensor for hydrogen detection in power transformers

Cited by 20 publications

References 21 publications

Recent advancements in optical fiber hydrogen sensors

Recent advancements in optical fiber hydrogen sensors

Optical sensors for power transformer monitoring: A review

Experimental Analysis of Modified CNTs-Based Gas Sensor

Contact Info

Product

Resources

About