Applied risk analysis for high voltage equipment

For a save and reliable operation of high voltage equipment the maintenance strategy and condition evaluation is a sufficient part for the utility. Within the maintenance program diagnostic measurements should be evaluated carefully. Only the results of both, diagnostic measurements and analysis of the machine operating dates can give a view to the actual condition of the power equipment. For this reason the measurements and data analysis has to be treated independent and carefully. Based on failure statistics and the results of diagnostics and condition evaluation the reliability of the machines can be determined. For the risk assessment the different kinds of risks and their probability so as the magnitude of damage have to be analyzed.