Moisture Assessment in Transformer Insulation Liquid using Optical Sensors

被引：1

作者：

Akre, S. ^{[1
,2
]}

Sekongo, B. ^{[1
,2
]}

Fofana, I. ^{[1
]}

Brettschneider, S. ^{[1
]}

Meghnefi, F. ^{[1
]}

Yeo, Z. ^{[3
]}

Kung, P. ^{[4
]}

机构：

[1] Univ Quebec, Res Chair Aging Power Network Infrastruct ViAHT, Saguenay, PQ, Canada

[2] Inst Pedagog Natl Enseignement Tech & Profess IPN, Dept Format Ind, BP 2098, Abidjan, Cote Ivoire

[3] Inst Natl Polytech Houphouet Boigny INP HB, Dept Gen Elect & Elect, BP 1093, Yamoussoukro, Cote Ivoire

[4] QPS Photron Inc, Montreal, PQ, Canada

来源：

2023 IEEE CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA, CEIDP | 2023年

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1109/CE/DP5414.2023.10410574

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Online monitoring of power transformers' insulation systems is essential to detect incipient failures. Moisture, known to be enemy number one of power transformer insulation, is widely determined by capacitive water activity probes or offline by Karl Fisher titration in the laboratory. This contribution presents online moisture monitoring in transformer oil using an optical fiber sensor. Compared to capacitive sensors, optical sensors are insensitive to electromagnetic interference. Two different Fiber Bragg Gratings (FBGs) separated by a gap are coated, one with acrylate and the other with a hygroscopic polyimide film. Mineral oil and synthetic ester Midel 7131 are used for the calibration. The oil sample was exposed to humid air to obtain four different moisture content values. The designed sensor is immersed into a sealed vessel via a surgical needle into the oil. The two FBGs provide two peaks that are used to assess absolute moisture. The distance between peaks is calibrated to ppm of moisture as assessed by Karl Fisher titration. The obtained results indicate the feasibility

引用

页数：4

共 15 条

[1] Akre S, 2019, P CIGRE CAN C MONTR
[2] On the Feasibility of Monitoring Power Transformer's Winding Vibration and Temperature along with Moisture in Oil Using Optical Sensors
Akre, Simplice
Fofana, Issouf
Yeo, Zie
Brettschneider, Stephan
Kung, Peter
Sekongo, Bekibenan
[J]. SENSORS, 2023, 23 (04)
[3] Advanced Online Moisture Measurements in Transformer Insulation Using Optical Sensors
Ansari, Muhammad A.
Martin, Daniel
Saha, Tapan Kumar
[J]. IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION, 2020, 27 (06) : 1803 - 1810
[4] Water in oil-filled high-voltage equipment part I: States, solubility, and equilibrium in insulating materials
Aralkelian, V. G.
Fofana, I.
[J]. IEEE ELECTRICAL INSULATION MAGAZINE, 2007, 23 (04) : 15 - 27
[5] Polyimide-Based Capacitive Humidity Sensor
Boudaden, Jamila
Steinmassl, Matthias
Endres, Hanns-Erik
Drost, Andreas
Eisele, Ignaz
Kutter, Christoph
Mueller-Buschbaum, Peter
[J]. SENSORS, 2018, 18 (05)
[6] BUCK AL, 1981, J APPL METEOROL, V20, P1527, DOI 10.1175/1520-0450(1981)020<1527:NEFCVP>2.0.CO
[7] 2
[8] Hartog A. H, 2017, An introction to distributed optical fiber sensors
[9] Fiber Bragg grating technology fundamentals and overview
Hill, KO
Meltz, G
[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 1997, 15 (08) : 1263 - 1276
[10] Polyimide-Coated Fiber Bragg Grating for Relative Humidity Sensing
Lin, Yao
Gong, Yuan
Wu, Yu
Wu, Huijuan
[J]. PHOTONIC SENSORS, 2015, 5 (01) : 60 - 66

← 1 2 →