Thermal analysis of 22.9-kV crosslinked polyethylene cable joint based on partial discharge using fiber Bragg grating sensors
| Autor: | Siwoong Park, Chanil Yeo, Hyun Seo Kang, Hyoung-Jun Park, Hyunjin Kim |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Optical fiber General Engineering 02 engineering and technology Polyethylene 01 natural sciences Atomic and Molecular Physics and Optics Thermal expansion law.invention 010309 optics chemistry.chemical_compound 020210 optoelectronics & photonics chemistry Fiber Bragg grating law 0103 physical sciences Partial discharge 0202 electrical engineering electronic engineering information engineering Power cable Composite material Thermal analysis Sensitivity (electronics) |
| Zdroj: | Optical Engineering. 60 |
| ISSN: | 0091-3286 |
| DOI: | 10.1117/1.oe.60.3.034101 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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