A novel database format for partial discharge monitoring and evaluation, based on the information of single PD pulses

Numerous wide-band partial discharge detection and measurements have shown excellent results in order to diagnose and to evaluate high voltage apparatus. The shape of single PD pulses can be gathered with this method of measurement in time domain, if the signal is sampled and digitized with sufficient sampling frequency and resolution. There is a lot of information in these single PD pulses, which can be used for evaluation diagnosis and monitoring of high voltage devices. As new monitoring systems based on wide-band partial discharge measurements are under development by many researchers and specialists a common format for data processing particularly for database systems is necessary. In this contribution a novel format for a database system for PD monitoring and evaluation systems is suggested. It is shown, that saving special features of single PD pulses not only causes a reduction of the huge amount of data to a limited value but also, that the real useful information of PD pulses can be reconstructed easily. A PD monitoring system operating based on this database format is introduced, as well as the advantages of this format for data reduction are also discussed.