Title :
Determination of discharge sources by analysis of discharge quantities as a function of time
Author :
Gulski, E. ; Kreuger, F.H.
Author_Institution :
Delft Univ. of Technol., Netherlands
Abstract :
An attempt was made discriminate between discharge sources by studying the time behavior of discharge quantities. By means of computer-aided registration, the maximum discharge magnitude, the number of discharges, and the inception voltage as a function of time were processed for the positive and the negative half of the voltage cycle. Tests with models of different discharge sources have shown that the temporal behaviour of these quantities contains valuable information. Characteristic responses, such as strong fluctuation with treeing or with discharges in liquids, increasing or decreasing response with cavity discharges, and the differences in behavior in the positive and the negative half of the voltage cycle of electrode-bounded cavities, were studied. These characteristics are correlated with conditions in the discharge site or changes in the defects under the influence of discharges
Keywords :
electrical engineering computing; image recognition; insulation testing; partial discharges; computer-aided registration; discharge quantities; discharge sources; discharges in liquids; electrode-bounded cavities; inception voltage; insulation; maximum discharge magnitude; number of discharges; partial discharges; strong fluctuation with treeing; time behavior; voltage cycle; Dielectrics; Fault location; Fluctuations; Geometry; Ignition; Liquids; Partial discharges; Testing; Timing; Voltage;
Conference_Titel :
Electrical Insulation, Conference Record of the 1992 IEEE International Symposium on
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-0649-X
DOI :
10.1109/ELINSL.1992.246973
