Effects of the Insulation Quality on the Frequency Response of Power Transformers
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2006

This paper presents results of frequency domain spectroscopy (FDS) measurements on oil-impregnated pressboard insulation, their analyses and use of the data for modelling high frequency response (FRA) of transformers. The dielectric responses were measured in a broad frequency range, i.e. from 0.1 mHz to 1 MHz, on model samples containing different amount of moisture. The responses were parameterised with terms representing dc conductivity, low frequency dispersion and Cole-Cole polarisation mechanisms and they were thereafter used to model the FRA response of a three-phase transformer.

transformer insulation

moisture content

insulation modelling

frequency domain spectroscopy

Författare

Nilanga Abeywickrama

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Chandima Ekanayake

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

Stanislaw Gubanski

Chalmers, Material- och tillverkningsteknik, Högspänningsteknik

International Conference on Condition Monitoring and Diagnosis, Korea

Ämneskategorier

Annan elektroteknik och elektronik

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2017-10-07