Title :
Investigation of partial discharges in SF6 using a computer-based data acquisition system
Author :
Blackburn, T.R. ; Li, Z.Z. ; Phung, B.T.
Author_Institution :
Sch. of Electr. Eng., New South Wales Univ., Kensington, NSW, Australia
fDate :
6/1/1992 12:00:00 AM
Abstract :
Investigations aimed at developing a new method of testing SF6 gas, from a gas insulated substation (GIS), for impurities is described. The method involves observation and analysis of the properties and characteristics of corona discharge produced when an SF6 sample is subjected to the nonlinear electric field of a point-plane test geometry. These properties are sensitive to the presence of impurities and analysis of the discharges should provide information which allows some estimation of the impurity, perhaps even species and concentration. Preliminary to such development, a number of experiments involving partial discharge (PD) recording and analysis in SF6 samples contaminated by moisture are described. The results of the experiments indicate that statistical analysis of the data may provide possible means of impurity evaluation
Keywords :
corona; gaseous insulation; insulation testing; partial discharges; power engineering computing; substations; sulphur compounds; SF6; computer-based data acquisition system; contaminated by moisture; corona discharge; gas insulated substation; impurities; nonlinear electric field; partial discharges; point-plane test geometry; statistical analysis; Computational geometry; Corona; Disk recording; Gas insulation; Geographic Information Systems; Impurities; Information analysis; Partial discharges; Substations; Testing;
Journal_Title :
Electrical Insulation, IEEE Transactions on
