Omicron Electronics Gmbh

Caspar Steineke

Harald Emanuel

Ulrich Klapper

Ronald Plath

This invention concerns methods and devices for calibrating a partial discharge measuring device and for locating faults on cables. In the method, calibration signals, which can include a band-limited white noise, are used with a periodically repeated signal course. By averaging over a predetermined period duration (T) of the calibration signal, it is possible, in the case of a partial discharge measurement, to recalibrate the measuring device continuously during the measurement, and additionally on cables to determine the fault location with great precision.

Method of locating faults on a cable

The present invention relates to a method for determining partial discharges at an electrical component (). In the case of the method, an electrical signal that comprises partial discharge pulses due to the partial discharges at the electrical component () is detected. Through filtering of the electrical signal by means of n filters (-) having n differing filter characteristics, n filtered partial discharge signals are generated. Respectively one of the filtered partial discharge signals is assigned, respectively, to one of the n filters (-), n being greater than or equal to two. Finally, the partial discharges are determined by linking the n filtered partial discharge signals.

Device and method for determining partial discharges at an electrical component

This invention concerns a method and devices for calibrating a partial discharge measuring device and for locating faults on cables. In the method, calibration signals, which can include a band-limited white noise, are used with a periodically repeated signal course. By averaging over a predetermined period duration (T) of the calibration signal, it is possible, in the case of a partial discharge measurement, to recalibrate the measuring device continuously during the measurement, and additionally on cables to determine the fault location with great precision.

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Berlin, Germany

Caspar Steineke