Diagnostic norms for asset condition assessment

For the classification of the condition quality of HV assets, norms are necessary to determine the necessity of successive maintenance actions or replacement. E.g. A PD source is not always harmful to the asset´s insulation in the short term. To distinguish the condition state of an asset, decision support needs to be developed. One way to develop this decision support is using statistical analysis on large numbers of field measurement data for the determination of experience norms for different diagnostic properties applicable for condition assessment of HV assets, in order to find a base for rejection of an asset.