Method and device for determining power system parameters

Abstract

A method for determining a dielectric parameter of an electrical insulation of a power system component comprises the following steps: determining the activation energy of the electrical insulation, determining the actual temperature (T1) of the electrical insulation and the temperature (T2) to which the measurement is to be corrected, calculating a correction factor (Axy) by means of the Arrhenius equation, stimulating the electrical insulation with a DC voltage stimulation signal; determining a response for the power system to the DC voltage stimulation signal at the actual temperature, and determining the parameter of the electrical insulation at the temperature to which the measurement is to be corrected based on the response modified by means of the correction factor. Thereby, the individual characteristics of the power system apparatus insulation is taken into account. A device for determining a dielectric parameter of an electrical insulation of a power system component is also provided.

Dependencies are inferred from the claim text.