Dielectric response of paper-oil insulation of power transformers

• Autorzy: Subocz J. , Gielniak J. , Ossowski M. , Walczak K.
• Konferencja: II International Conference on Advances in Processing, Testing and Application of Dielectric Materials, 15-17 September, Wrocław 2004
• Języki publikacji: EN

Abstrakty

EN

Recently diagnostic techniques using measurements in time and low frequency domain are very intensive developed. There are used various methods (RVM, FDS, PDC), which allow to evaluate the moisture content of paper insulation or its degradation degree. However up to now in the most cases the interpretation of measurement results is ambiguous. The paper presents field measurement results of different operating time power transformers. The measurement of power transformers were taken using three methods: RVM, FDS, PDC. Analysis of dielectric dispersion in time and frequency domain was also presented. Then the analysis results were compared. It was obtained, that the calculated relaxation time of primary relaxation structure for both measurements in time and frequency domain was the same.

Słowa kluczowe

EN

RVM; FDS; PDC; relaxation mechanism; paper-oil insulation system

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2004
• Tom: Vol. 40, nr 15
• Strony: 102--105
• Opis fizyczny: Bibliogr. 7 poz., rys., tab.

Twórcy

autor

Subocz J.

• Technical University of Szczecin, Institute of Electrical Engineering

autor

Gielniak J.

• Poznań University of Technology, Institute of Electrical Power Engineering

autor

Ossowski M.

• Poznań University of Technology, Institute of Electrical Power Engineering

autor

Walczak K.

• Poznań University of Technology, Institute of Electrical Power Engineering

Bibliografia

• [1] GÄFVERT U., FRIMPONG G., FUHR J., Modelling of Dielectric Measurements on Power Transformers., CIGRE Session Paris 1998, pp.15-103
• [2] DER HOUHANESSIAN V., ZAENGL W.S., On-site diagnosis of power transformers by means of relaxation current measurement, IEEE Symposium on Electrical Insulation, Arlington, USA, (1998), pp.28-34
• [3] FRIMPONG G., GÄFVERT U., FUHR J., Measurement and Modeling of Dielectric Response of Composite Oil/Paper Insulation, International Conference ICPADM.97
• [4] ZAENGL W.S., Applications of Dielectric Spectroscopy in Time and Frequency Domain for HV Power Equipment, IEEE Electrical Insul. Magazine, Vol. 19, No 6, (2003), pp.9-22
• [5] SUBOCZ J., Wvbrane zagadnienia przewodnictwa i relaksacji dielektrycznej w aspekcie diagnostyki izolacji kompozytowej, Prace Naukowe Politechniki Szczecińskiej Nr 580, (2003), Szczecin
• [6] DAS-GUPTA D.K., SCARPA P.C.N., Polarization and Dielectric Behavior of ac-aged Polyethylene, IEEE Trans. DEl vol.3. No3, (1996), pp.366-373
• [7] DER HOUHANESSIAN V., Measurements and analysisn of dielectric response in oil-paper insulation systems, Ph.D.tesis, Swiss Federal Institute of Technology, No.12832, Zurich, 1998