Title :
Insulation diagnostic methods
Author :
Jermendy, L. ; Fogarasi, I. ; Simon, S. ; Szabó, J.
Author_Institution :
Electr. Large Lab. Ltd., Budapest, Hungary
Abstract :
Various tests were performed on glass cap insulators under laboratory conditions. According to the laboratory control for diagnostic methods, the direction finder, the ultrasonic detector and the night vision system can be recommended. Laboratory methods were selected for a systematic insulator diagnosis on porcelain cap insulators. Electromechanical parameters of the aged insulators may be reduced to half the original value, to far below the required values. The power frequency wet test proved the ageing for other type of insulator string too. The monitoring of leakage current impulses helps to follow the procedure
Keywords :
ageing; electric breakdown; electric current measurement; glass; impulse testing; insulator testing; leakage currents; porcelain insulators; aged insulators; direction finder; glass cap insulators; insulation diagnostic methods; insulator breakdown tests; insulator string; leakage current impulse monitoring; night vision system; porcelain cap insulators; power frequency wet test; ultrasonic detector; Aging; Control systems; Detectors; Glass; Insulation; Insulator testing; Laboratories; Night vision; Performance evaluation; Porcelain;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.728929
