Paper Information

Journal:   IRANIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING (IJECE)   WINTER-SPRING 2003 , Volume 2 , Number 1; Page(s) 30 To 34.
 
Paper: 

AN EXPERIMENTAL INVESTIGATION OF LEAKAGE CURRENT ON HIGH VOLTAGE CONTAMINATED INSULATORS

 
 
Author(s):  TSARABARIS P.T., KARAGIANNOPOULOS C.G.*, BOURKAS P.D., THEODOROU N.J.
 
* DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING, NATIONAL TECHNICAL UNIVERSITY OF ATHENS, 9 IROON POLYTECHNIOU STR., GR 157-80 ATHENS, GREECE
 
Abstract: 

This paper deals with results of leakage current measurements on 20 kV porcelain insulators. The measurements were performed in a time frame of one period (50 Hz) and the insulators were contaminated from a compound of salt and kaolin. The study was made via I-U characteristic curves plotted for one cycle of voltage application. The investigation of the observed phenomena showed that the response to the applied voltage is linear at first and thereafter takes the form of current pulses. Partial discharges (streamers), short and long duration arcs are the most likely physical phenomena detected experimentally. This assumption is convincingly supported from calculations of the average energy per pulse, which was found to be close to values reported in the related literature.

 
Keyword(s): INSULATORS, LEAKAGE CURRENT, PARTIAL DISCHARGES
 
References: 
 
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