Measurement of surface charge distribution on glass insulator using steel mesh

Abstract

This paper studies the charge distribution on the transmission line glass insulator surfaces under two different ac voltages viz. 28 kV and 33 kV. A string of four insulator units under dry and clean conditions is taken as the main research object. An attempt to capture the accumulated charge has been made by using radially shaped stainless steel mesh placed axially at a distance of 2 cm from each glass insulator circumference. Results show that the distribution of charge across each glass of insulator in the string is uneven, and the value of surface charge increases with the increment of applied voltage.