Title :
Condition monitoring of the bulk insulation of distribution transformers by electrical and chemical techniques
Author :
Darveniza, M. ; Saha, T.K. ; Hill, D.J.T. ; Le, T.T.
Author_Institution :
Queensland Univ., St. Lucia, Qld., Australia
Abstract :
The paper addresses the assessment of insulation condition in distribution transformers. Electrical diagnostic techniques have been applied to several distribution transformers of different ages and ratings. Correlation between dissipation factor and interfacial polarization spectra (IFS) parameters are examined. Gel permeation chromatography (GPC) has been used for observing the change in molecular weight of the cellulose polymer. The correlation between interfacial polarization parameters and peak molecular weights are also examined
Keywords :
chromatography; dielectric polarisation; distribution networks; electric breakdown; gels; insulation testing; monitoring; organic insulating materials; polymers; power transformer insulation; power transformer testing; bulk insulation; cellulose polymer; condition monitoring; dissipation factor; distribution transformers; gel permeation chromatography; insulation condition assessment; interfacial polarization spectra; molecular weight; Chemicals; Condition monitoring; Dielectrics and electrical insulation; Electric variables measurement; Oil insulation; Petroleum; Polarization; Polymers; Power transformer insulation; Thermal degradation;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1994., Proceedings of the 4th International Conference on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-1307-0
DOI :
10.1109/ICPADM.1994.414118
