7 November 2012 All fibre-optic simultaneous detection of optical and acoustic emission from partial discharges in silicone elastomer
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Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421B9 (2012); doi: 10.1117/12.974941
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
In high-voltage facilities of power stations and transmission networks, discharge activities leading to catastrophic failure can occur. Early detection of partial discharges (PD) in polymeric insulations of HV cable terminations and joints is therefore increasingly important. This paper describes a monitoring methodology to detect PD activity in silicone elastomer by two independent fibre-optic sensor types. Fluorescent fibre-based sensors are sensitive to plasma optical emission already at the onset of PD while an acoustic fibre-optic sensor responds to acoustic emission from the PD during its progression. The sensitivities of both sensor types are compared, and it is demonstrated that they provide complementary information for fibre-optic sensor-based monitoring of high-voltage cable accessories.
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Philipp Rohwetter, Tobias Kielau, Chaiyaporn Lothongkam, Gerd Heidmann, Wolfgang Habel, "All fibre-optic simultaneous detection of optical and acoustic emission from partial discharges in silicone elastomer", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421B9 (7 November 2012); doi: 10.1117/12.974941; https://doi.org/10.1117/12.974941
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KEYWORDS
Sensors

Acoustics

Silicon

Fiber optics sensors

Acoustic emission

Electrodes

Signal detection

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