Title :
Design parameters of weathersheds that affect the ageing of polymer insulators in salt-fog
Author :
El-Hag, A.H. ; Jayaram, S. ; Cherney, E.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
The paper presents the results of a study in which the third harmonic frequency component of leakage current is used to study various design parameters of weathersheds that affect the ageing of polymer insulators in salt-fog. Salt-fog was applied to model insulators for 120 hours at two different conductivity levels, i.e. 1000 /spl mu/S/cm and 2000 /spl mu/S/cm as an aging test. The effect of the number of sheds and shed inclination angle on the aging performance of polymer insulators was studied. Model insulators having 2-sheds showed better performance than 4-sheds. Also, the shed inclination angle improved the performance of the insulators in salt-fog.
Keywords :
ageing; electric breakdown; insulator testing; leakage currents; polymer insulators; 1000 muS/cm; 120 hour; 2000 muS/cm; aging performance; conductivity levels; insulator breakdown testing; leakage current third harmonic frequency component; polymer insulators; salt-fog ageing tests; shed inclination angle; weathershed design parameters; Aging; Ceramics; Dielectrics and electrical insulation; Flashover; Leakage current; Plastic insulation; Pollution measurement; Polymers; Protection; Ribs;
Conference_Titel :
Power Engineering Society Summer Meeting, 2001
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-7173-9
DOI :
10.1109/PESS.2001.970084
