Partial discharge analyses ‒ a comparison of different parameters used

• Autorzy: Benzerouk D. , Patsch R. , Menzel J.
• Konferencja: II International Conference on Advances in Processing, Testing and Application of Dielectric Materials, 15-17 September, Wrocław 2004
• Języki publikacji: EN

Abstrakty

EN

In the past many approaches have been made to use partial discharge signals to monitor and characterize degradation processes in electric equipment. For the on-line monitoring of large machines or transformers or periodic off-line inspections in many cases only the change of the phase angle distributions of the occurrence of discharges is taken as an indicator for ageing processes in the insulating system. This is sufficient as an indication for the need of a more detailed examination, but often even with off-line experiments the actual change in the defect and especially its relevance for the service life remains unclear. A more detailed insight into the physics of the local degradation processes and their relevance for the ageing process of the equipment can be gained in most cases only with measurements with a continuously increased voltage load and the evaluation of the data via Pulse Sequence Analysis. The paper will discuss and compare different methods to analyze partial discharge data, starting with 'simple' frequency distributions of different parameters of the externally applied voltage load derived from the data set as a whole. As the main point sequence correlated data such as time differences between consecutive discharges will be discussed. It will be shown that in dependence on the type of defect the significance of different parameters is different.

Słowa kluczowe

EN

pd-analysis; voltage difference; time difference; space charge; pulse shape

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2004
• Tom: Vol. 40, nr 15
• Strony: 46--50
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Benzerouk D.

• Institute of Materials & Diagnostics in Electrical Engineering, University of Siegen, Germany

autor

Patsch R.

• Institute of Materials & Diagnostics in Electrical Engineering, University of Siegen, Germany

autor

Menzel J.

• Institute of Materials & Diagnostics in Electrical Engineering, University of Siegen, Germany

Bibliografia

• [1] KREUGER F.H., GULSKI E., KRIVDA A., Classification of Partial Discharges. IEEE Trans. EI-28, (1993), 917-31
• [2] PATSCH R., HOOF M., Pulse-Sequence-Analysis: A New Method to Investigate the Physics of PD-Induced Ageing. IEE Proc. Sci. Meas. Technol., vol. 142, (1995), 95-101
• [3] PATSCH R., BERTON F., Pulse Sequence Analysis - a Diagnostic Tool based on the Physics behind Partial Discharges. J. Appl. Phys. D: 35(1), (2002), 25-32
• [4] HOOF M., Impulsfolgen-Analyse: EM neues Verfahren der Teilentladungsdiagnostik. PhD-Thesis, (1997), University of Siegen, Germany
• [5] BENZEROUK D., PATSCH R., Zum Auftreten von Oberflächenladungen bei Teilentladungen in Statorwicklungen. ETG-Fachbericht 97, Köln, Germany, (2004), 405-9
• [6] PATSCH R., BENZEROUK D., BERTON F., Time Differences between Partial Discharge Events ‒ what do they tell us ? NORD-IS'03, Tampere, Finland, (2003), 135-42
• [7] PATSCH R., BENZEROUK D., Analysis of Partial Discharges in Stator Windings. CEIDP'03, Albuquerque, New Mexico, USA, (2003), 641-4