Acoustic emission signals associated with prebreakdown state in air high voltage insulating systems

• Autorzy: Dobrzycki A. , Opydo W. , Zakrzewski S.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the method of acoustic emission (AE) in the study of the state of insulation systems with air as the high-voltage insulation. The tested object was a planar system of electrodes made of aluminum. In addition, the analysis of AE signals and the impact on these signals the presence of dielectric coating on the electrode surfaces of aluminum was tested. We examined the influence of saturation (seal) these coatings on the dielectric strength of the insulation system. The study was conducted at an air pressure values 1·105, 3·105 and 5·105 Pa. The strength of the electrical systems were tested at alternating voltage with a frequency of 50 Hz. Noted pros and cons of using the method of EA in the context of the assessment of high-voltage electric insulation devices. The presented results confirm the possibility of using acoustic emission method, not only for identifying vulnerable areas, but also to predict the time of of further use of high voltage device.

Słowa kluczowe

EN

high voltage insulating system; breakdown voltage; acoustic emission method; dielectric coatings

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Computer Applications in Electrical Engineering
• Rocznik: 2015
• Tom: Vol. 13
• Strony: 278--286
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Dobrzycki A.

• Poznań University of Technology 60-965 Poznań, ul. Piotrowo 3a

autor

Opydo W.

• Poznań University of Technology 60-965 Poznań, ul. Piotrowo 3a

autor

Zakrzewski S.

• Tele-Fonika Kable S.A. 85-957 Bydgoszcz, ul. Fordońska 152

Bibliografia

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• [3] Morshuis P. H. F.: Partial discharge mechanisms, Delft University Press 1993.
• [4] Opydo W., Dobrzycki A.: Detection of electric treeing of solid dielectrics with the metod of acoustic emission, Electrical Engineering (Archiv fur Elektrotechnik), March 2012, Volume 94, Issue 1, pp 37-48.
• [5] Skipper D. J., McNeall P. I., Impulse-strength measurements of compressed gas insulation for extra-high-voltage power cables, Proc. IEE, 1965, vol. 112, s. 103.
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• [7] Skubis J., Wybrane zagadnienia z techniki i diagnostyki wysokonapięciowej, Oficyna Wydawnicza Politechniki Opolskiej, Politechnika Opolska 1998.
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• [9] Zakrzewski S., Opydo W., Effect of electrode material on electric strength of compressed air in uniform electric field, Poznan University of Technology, Academic Journals, Poznan 2010.