2 June 2014 Improved fibre optic acoustic sensors for partial discharge in elastomeric insulations
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Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91571J (2014) https://doi.org/10.1117/12.2059489
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain
Abstract
Partial discharge in elastomeric high voltage insulations is a major reason for device failure. The special challenges of the high voltage environment limit the use of conventional acoustic emission sensors. Fibre-optic sensors can cope with these challenges thanks to their optical sensing principle and the use of all-dielectric materials. In this contribution, improvements to a previously introduced design of ultrasonic fibre-optic acoustic partial discharge sensors for elastomeric insulations are presented. The improved performance of fibre-optic acoustic sensors in detecting AC partial discharge is demonstrated. Furthermore, their ability to detect low-level damage processes in elastomeric insulation under DC dielectric stress is shown to outperform the highly sensitive electrical detection method.
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Philipp Rohwetter, Philipp Rohwetter, Chaiyaporn Lothongkam, Chaiyaporn Lothongkam, Wolfgang Habel, Wolfgang Habel, Gerd Heidmann, Gerd Heidmann, Daniel Pepper, Daniel Pepper, } "Improved fibre optic acoustic sensors for partial discharge in elastomeric insulations", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571J (2 June 2014); doi: 10.1117/12.2059489; https://doi.org/10.1117/12.2059489
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