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Energies 2017, 10(12), 2105; doi:10.3390/en10122105

Positioning and Imaging Detection of Corona Discharge in Air with Double Helix Acoustic Sensors Array

1
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
2
Departamento de Ingeniería Eléctrica, Electrónica, Automática y Física Aplicada, Escuela Técnica Superior de Ingeniería y Diseño Industrial (ETSIDI), Universidad Politécnica de Madrid (UPM), Ronda de Valencia 3, 28012 Madrid, Spain
*
Author to whom correspondence should be addressed.
Received: 12 September 2017 / Revised: 6 November 2017 / Accepted: 16 November 2017 / Published: 11 December 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

Corona discharge could be a serious hazard to the outdoor insulation of a high-voltage (HV) system and also is an important detection issue for insulation status diagnosis. In this study, a double-helix-ultrasonic-array (DHUA) sensor was developed for corona positioning, which showed a good sensitivity to the ultrasonic signal originating from corona discharge and a satisfied directional response in static beam patterns. Based on the matting-based image fusion method, the acoustic intensity matrix was fused to a visual scene in real-time. This ultrasonic visualization technology was then evaluated with a simulation test and performed in a real air insulated substation (AIS), and showed a satisfied performance in terms of sensitivity and spatial location resolution. View Full-Text
Keywords: ultrasonic array; sensor; corona discharge; ultrasonic visualization; image fusion ultrasonic array; sensor; corona discharge; ultrasonic visualization; image fusion
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Dong, M.; Ma, A.; Ren, M.; Zhang, C.; Xie, J.; Albarracín, R. Positioning and Imaging Detection of Corona Discharge in Air with Double Helix Acoustic Sensors Array. Energies 2017, 10, 2105.

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