USING THE EXPERT SYSTEMS IN THE EVALUATION OF THE STATE OF HIGH VOLTAGE INSULATION SYSTEMS OF ELECTRICAL MACHINES

Karel Záliš

   Expert systems are used for evaluating the actual state and future behavior of insulating systems of high voltage electrical machines and equipment. Several rule-based expert systems have been developed in cooperation with top diagnostic workplaces in the Czech Republic for this purpose. The IZOLEX expert system evaluates diagnostic measurement data from commonly used off-line diagnostic methods for the diagnostics of high voltage insulation of rotating machines, non-rotating machines and insulating oils. The CVEX expert system evaluates the discharge activity on high voltage electrical machines and equipment by means of off-line measurement. The CVEXON expert system is for evaluating the discharge activity by on-line measurement, and the ALTONEX expert system is the expert system for on-line monitoring of rotating machines. These developed expert systems are also used for educating students (in bachelor, master and post-graduate studies) and in courses which are organized for practicing engineers and technicians and for specialists in electroenergetics. A complex project has recently been set up to evaluate the measurement of partial discharges. Two parallel expert systems for evaluating partial discharge activity on high voltage electrical machines will work at the same time in this complex evaluating system.

Keywords: expert system, insulation, high voltage, dielectric diagnosis, diagnostics, predictive maintenance, reliability, electric machine, electric equipment, insulating oil, partial discharges, measurement

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