Author/Authors :
Lesieutre، نويسنده , , B.C.، نويسنده , , Hagman، نويسنده , , W.H.، نويسنده , , Kirtley، نويسنده , , J.L.، نويسنده , , Jr.، نويسنده ,
Abstract :
In this paper we examine dynamic models
of transformer top oil temperature for use in an on-line
monitoring and diagnostic system. Data taken from large
transformers in the field indicate that the IEEE model of
top oil temperature rise over ambient temperature does
not adequately account for daily variations in ambient
temperature. We propose a modification that acciirately
predicts top oil temperature and can be implemented in
an on-line system. This model is verified using data from
a large transformer in service.
