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Partial Discharge Detection Using a Graphene Thin-Film Coated UHF Sensor
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- Authors
- Hong-Kyw Choi, Dae-Seung Yoo, Sung-Wook Kim
- Issue Date
- 2026-07
- Citation
- International Conference on Future Information and Communication Engineering (ICFICE) 2026, pp.110-113
- Publisher
- 한국정보통신학회
- Language
- English
- Type
- Conference Paper
- Abstract
- Partial discharge (PD) detection is widely used to evaluate the insulation condition of high-voltage power equipment such as gas-insulated switchgear (GIS). Recently, as the demand for reliable power equipment increases and environmentally friendly insulating gases are gradually introduced, more sensitive PD detection technologies are required. This study investigates the sensitivity improvement of a UHF partial discharge sensor by applying graphene thin-film coating to a fan-shaped sensing electrode. A graphene-based thin-film coating process was also applied to the electrode surface in order to enhance the sensor response to PD signals. A PD experimental setup was constructed to evaluate the performance of the proposed sensor and to compare it with a conventional electrode structure. Experimental observations show that both the modified electrode structure and the graphene coating improve the detection characteristics of the UHF sensor. The proposed approach may be useful for improving PD monitoring reliability in high-voltage power equipment. Index Terms: Graphene thin-film coating, partial discharge detection, UHF sensor, gas-insulated switchgear.
- Keyword
- Graphene thin-film coating, partial discharge detection, UHF sensor, gas-insulated switchgear
- KSP Keywords
- Coating process, Detection characteristics, Electrode surface, Environmentally friendly, Gas-insulated switchgear, Graphene coating, High Voltage, Index Terms, Insulation condition, Monitoring reliability, PD detection