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

Author

Listed:
  • Ming Dong

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Ao Ma

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Ming Ren

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Chongxing Zhang

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Jiacheng Xie

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China)

  • Ricardo Albarracín

    (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)

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.

Suggested Citation

  • Ming Dong & Ao Ma & Ming Ren & Chongxing Zhang & Jiacheng Xie & Ricardo Albarracín, 2017. "Positioning and Imaging Detection of Corona Discharge in Air with Double Helix Acoustic Sensors Array," Energies, MDPI, vol. 10(12), pages 1-15, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2105-:d:122522
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