Title :
Computer aided recognition of defects in GIS
Author :
Ziomek, W. ; Schlemper, H.-D. ; Feser, K.
Author_Institution :
Inst. of Electr. Power Eng., Poznan Univ. of Technol., Poland
Abstract :
A computerized pattern recognition system based on phase resolved partial discharge (PRPD) measurements has been developed. The paper presents results of defect classification obtained for various GIS installations. The system is trained to distinguish between seven basic defect types, such as voids in spacers, moving metallic particles, protrusions on electrodes and floating electrodes. The defect classification is based on 60 parameters extracted from PRPD patterns and utilizes different recognition algorithms. Tests with a database of more than 600 individual measurements gave satisfactory results. Tests with multiple defects and disturbed measurements were done. The database was collected during laboratory experiments and on-site tests of GIS installations
Keywords :
electrodes; gas insulated substations; pattern recognition; power engineering computing; voids (solid); GIS; computerized pattern recognition system; defect classification; disturbed measurements; electrode protrusions; floating electrodes; moving metallic particles; multiple defects; on-site tests; phase resolved partial discharge; recognition algorithms; spacers; voids; Classification algorithms; Databases; Geographic Information Systems; Partial discharges; Pattern analysis; Pattern recognition; Power engineering computing; Pulse measurements; Testing; Voltage;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549290
