Title :
Detection of insulator ageing
Author :
Jermendy, L. ; Fogarasi, I.
Author_Institution :
Electr. Large Labs. Ltd., Budapest, Hungary
Abstract :
Various tests were performed on glass cap insulators under laboratory conditions. Laboratory methods were selected for a systematic insulator diagnosis on porcelain cap and long rod 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 strings too. The monitoring of leakage current impulses helps to follow the procedure. The selection of these impulses detects the mechanical defects of the insulators.
Keywords :
ageing; electric breakdown; impulse testing; insulator testing; leakage currents; aged insulators; electromechanical parameters; glass cap insulators; insulation breakdown tests; insulator ageing detection; insulator strings; laboratory conditions; leakage current impulses monitoring; long rod insulators; mechanical defects detection; power frequency wet test; Aging; Frequency; Glass; Insulation; Insulator testing; Laboratories; Leakage current; Monitoring; Performance evaluation; Porcelain;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826559
