Title :
Aging of oil-impregnated transformer insulation studied through partial discharge analysis
Author :
Chen, X. ; Morshuis, P.H.F. ; Zhuang, Q. ; Smit, J.J. ; Xu, Z.
Author_Institution :
High-Voltage Technol. & Manage., Delft Univ. of Technol., Delft, Netherlands
Abstract :
The aging of the epoxy-paper insulation of an oil-impregnated transformer was studied through partial discharge analysis. Accelerated electrical aging tests were carried out on samples of transformers windings, with and without paper insulation. Partial discharge (PD) measurements according to standard IEC 60270 were performed periodically during aging, and partial discharge phase patterns were recorded throughout the aging test. Some representative PD phenomena were obtained from the experimental results. The evolution of typical PD patterns is reported until breakdown.
Keywords :
life testing; partial discharge measurement; transformer oil; accelerated electrical aging tests; epoxy-paper insulation; oil-impregnated transformer insulation; partial discharge analysis; partial discharge measurements; Aging; Cavity resonators; Discharges; Oil insulation; Partial discharges; electrical aging; partial discharge; transformer insulation;
Conference_Titel :
Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on
Conference_Location :
Potsdam
Print_ISBN :
978-1-4244-7945-0
Electronic_ISBN :
978-1-4244-7943-6
DOI :
10.1109/ICSD.2010.5568110
