Knowledge rules for partial discharge diagnosis in service

A discussion of the possibility of interpretation (knowledge) rules to support PD diagnostic of service aged HV components. Based on systematic experience from this field it evaluates and classifies PD quantities which are found useful for diagnosis monitoring of different HV components, particularly for different insulation systems of HV components like instrument and power transformers, distribution and transmission power cables, GIS, generator stator insulation general characteristics of typical PD quantities are also evaluated.