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Journal Article
Thermal analysis of 22.9-kV crosslinked polyethylene cable joint based on partial discharge using fiber Bragg grating sensors
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- Authors
- Hyunjin Kim, Siwoong Park, Chanil Yeo, Hyun Seo Kang, Hyoung-Jun Park
- Issue Date
- 2021-03
- Citation
- Optical Engineering, v.60, no.3, pp.1-8
- ISSN
- 0091-3286
- Publisher
- SPIE
- Language
- English
- Type
- Journal Article
- Abstract
- Thermal effects of power cables are critical factors for determining the remaining lifetime and efficiency of power grids. Herein, we propose a fiber Bragg grating (FBG) sensor package with high-Temperature sensitivity. Using polyacetal, which has a higher coefficient of thermal expansion than typical optical fibers, we constructed the proposed sensor structure. The developed sensor exhibited about 14.1 times higher temperature sensitivity than a typical bare FBG sensor. To measure the temperature variation of power cable joints caused by partial discharge, we constructed a mock system similar to a manhole, and we installed the developed sensor at a 22.9-kV crosslinked polyethylene cable joint. The experimental result reveals that even a slight temperature difference of 0.2°C can be measured using PD (300 pC at 20 kV).
- KSP Keywords
- Bare FBG, Bragg grating sensors, Coefficient of thermal expansion, Critical factors, Crosslinked polyethylene(XLPE), Crosslinked polyethylene cable, Experimental Result, Fiber Bragg grating (FBG) sensor, High Temperature, Partial Discharge(P.D), Power cable