Fiber Optic Acoustic Sensor Based on SMS Structure With Thin Polymer Diaphragm for Partial Discharge Detection

This paper proposes a fiber optic acoustic sensor (FOAS) based on a single-mode fiber - multimode fiber - single-mode fiber (SMS) structure attached to a thin polymer film used as a diaphragm. The diaphragm was specially developed to enhance the sensitivity towards the acoustic pressure-wave resulte...

Full description

Saved in:
Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.188044-188055
Main Authors: Chaganti, L. G. Pavan Kumar, Ahmad, Mohd Hafizi, Piah, Mohamed Afendi Mohamed, Noor, Muhammad Yusof Mohd, Azmi, Asrul Izam
Format: Article
Language:English
Subjects:
Acoustic noise
Acoustics
Broadband
Dielectric barrier discharge
Electromagnetic interference
Fiber optics
Light sources
Noise sensitivity
Oil insulation
Optical fiber sensors
Optical fibers
Partial discharges
phase-resolved partial discharge
Polymer
Polymer films
Polymers
Power transformer insulation
Sensitivity enhancement
Sensors
Signal to noise ratio
SMS
surface discharge
Tunable lasers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper proposes a fiber optic acoustic sensor (FOAS) based on a single-mode fiber - multimode fiber - single-mode fiber (SMS) structure attached to a thin polymer film used as a diaphragm. The diaphragm was specially developed to enhance the sensitivity towards the acoustic pressure-wave resulted from the partial discharge (PD) events. The sensitivity and signal-to-noise ratio (SNR) characterizations of the FOAS without and with a thin polymer film were performed. Both time-resolved and phase-resolved partial discharge (PRPD) patterns measurements were carried out in air and oil media. The experiment was conducted with three-electrodes using FOAS in conjunction with the conventional PD measurement as per IEC 60270 standard. The sensor achieved a sensitivity up to −31.21 dBm and −30.8 (0 dBm is defined as 1V/ \mu Bar) using broadband and tunable light source, respectively. The discharge characteristics pattern of FOAS was verified with IEC 60270 standard, and the patterns of FOAS resembled IEC 60270 standard. The proposed FOAS was capable for detecting the PD using both broadband and tunable laser lights. The use of the thin polymer film had a significant impact on the acoustic sensitivity. With the simple, low-cost design structure and free from electromagnetic interference, FOAS is found to be suitable as an in-situ sensor for detecting the acoustic signals of partial discharge and can be utilized inside the transformer.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.3031578