CLASSIFICATION OF PARTIAL DISCHARGES

Classification of partial discharges aims at the recognition of discha rges of unknown origin. This classification is vital for the evaluatio n of discharges in tested constructions. For a long time, classificati on was performed by eye, studying discharge patterns at the well-known ellipse at an oscilloscope screen. In later years the introduction of digital processing techniques allowed automation of the recognition p rocedure. This paper reports on these procedures and applies them to a number of actual HV constructions which suffered from partial dischar ges. The results of these tests showed that a quite satisfactory recog nition of discharges took place.