Patent ID: 8729906
Filing Date: 2014-05-20
Classification: G01R

Abstract:
1. A method of monitoring partial discharges occurring in an electrical system, the method comprising: defining a low trigger level and a high trigger level, the low and the high trigger levels being amplitude levels for electrical pulses, wherein the high trigger level is a higher amplitude than the low trigger level; defining a minor time frame period; monitoring at least one phase of the electrical system for an occurrence of a pulse within the minor time frame; detecting a peak amplitude of a pulse occurring in the electrical system within the minor time frame; determining if the detected peak amplitude of the pulse exceeds the lower trigger level and/or the higher trigger level; assigning a pulse number to the pulse if the peak amplitude of the pulse exceeds the lower trigger level and/or the higher trigger level; capturing the pulse, or information associated therewith, if the pulse number associated with the pulse is less than a predetermined pulse number threshold in the minor time frame; applying a moving time trigger offset, such that: