Korrelationsanalyse ausgewählter Isolierölparameter von Leistungstransformatoren

he standard oil test is one of the most basic methods of condition assessment of power transformers. The standard oil
test investigates the capability of the oil to withstand different stresses, which occur during operation and ageing. In this
contribution it is investigated if relationships between the different parameters of standard oil tests can be found on a
real power transformer fleet. The result of this investigation show, that the different properties do not have significant
relationships therefore the measurement of each property is necessary and gives additional information. Furthermore the
typical behavior of oil properties of this transformer fleet related to the recommended values named in the standard will
be discussed.