Fiber Optic Fabry-Perot Sensor with Stabilization Technology for Acoustic Emission Detection of Partial Discharge

<span>Partial discharge is one the most important factor that leads to deteroration and failure of the power transformer transformer. Acoustic emission detection is effective method to evaluate the health index of the power transformer. Using acoustic emission (AE) sensors for partial discharge (PD) measurement is considered as one of the most promising techniques to detect and localize PD activities inside the transformer tank. On the other hand, AE waves suffer from high attenuation and reflections while traveling from the PD source to the AE sensor. The modeling of the AE wave can help to understand the behavior of the AE PD signal during its travel. In this paper, the AE PD signal is assumed to be composed of different frequencies. This work aims to investigate the influence of the frequency value on the attenuation and arrival time of the acoustic wave.</span>

Download Full-text

MEMS fiber optic Fabry-Perot sensors based on porous sensing diaphragms and applications for partial discharge detection

Optics and Precision Engineering ◽

10.37188/ope.20212911.2613 ◽

2021 ◽

Vol 29 (11) ◽

pp. 2613-2621

Author(s):

Wen-rong SI ◽

◽

Chen-zhao FU ◽

Jian BU ◽

He-li NI ◽

...

Keyword(s):

Fiber Optic ◽

Partial Discharge ◽

Fabry Perot ◽

Discharge Detection

Download Full-text

DFB-FL applied in the liquid-solid composite dielectric for ultra-high sensitive partial discharge acoustic emission detection

IEEE Sensors Journal ◽

10.1109/jsen.2021.3096010 ◽

2021 ◽

pp. 1-1

Author(s):

Jixian Qiao ◽

Weichao Zhang ◽

Qichao Chen ◽

Xuan Wang ◽

Hong Zhao

Keyword(s):

Acoustic Emission ◽

Partial Discharge ◽

Emission Detection

Download Full-text

ACOUSTIC EMISSION SIGNALS LOCATION IN DURALUMIN AND CARBON FIBER SAMPLES BY OPTICAL FIBER AND PIEZOELECTRIC TRANSDUCER SENSORS ANTENNA

Kontrol Diagnostika ◽

10.14489/td.2021.02.pp.018-029 ◽

2021 ◽

pp. 18-29

Author(s):

A. N. Seryeznov ◽

L. N. Stepanova ◽

S. I. Kabanov ◽

I. S. Kabanov ◽

V. V. Chernova ◽

...

Keyword(s):

Acoustic Emission ◽

Carbon Fiber ◽

Fiber Optic ◽

Piezoelectric Transducers ◽

Reinforced Plastic ◽

Electronic Simulator ◽

Fabry Perot ◽

Measurement Results ◽

Time Drift ◽

Ae Signals

The issues are considered of acoustic emission (AE) signals location generated by various simulators (Su–Nielsen, electronic simulator, metal balls of various diameter from 0.5 to 1.5 mm, dropped from different heights). Signals generated by built-in electronic simulator with a frequency of 1 Hz location is analyzed performed by an antenna consisting of two Fabry–Perot fiber-optic sensors (FOS) and two piezoelectric transducers, mounted on samples made of duralumin and T800 carbon fiber. A carbon fiber reinforced plastic sample with the defined above antenna mounted was tested with a VEDS-10 vibration stand. AE signals were registered under the vibration frequency of 20…50 Hz in the acceleration range of 0.3…0.8g. The influence of the time drift recorded by the piezoelectric transducers on the measurement results is determined. It was found that the time drift was not recorded by fiber-optic FOS sensors, but their sensitivity is more than 14 times less than that of piezoelectric transducers.

Download Full-text