Effects of Broken Skirts and Pollution on Voltage Distribution for Cap and Pin Glass Insulators

Abstract

Cap and Pin insulators are key elements on aerial electric power transmission lines in which their performance is subject to the environmental elements, like pollution and/or humidity. Furthermore, a broken insulator (stub) on an insulator string may change the voltage distribution along the chain. This paper goal is to study the effects of the voltage distribution along with tempered glass cap and pin insulator string in the presence of broken skirts as well contamination by pollution, using for that purpose a finite element software. This paper presents the voltage distribution profile across single and fourteen units of glass insulator string with stubs at distinct locations as well for the presence of contamination by pollution. It is concluded that the presence of pollution on a string with stubs will alter and exacerbate the increase of electrical potential effect due to the presence of stubs.

Sensing Method Using Multiple Quantities for Diagnostic of Insulators in Different Ambient Conditions

“…Fault, puncture, or contamination of the insulator surface can be analyzed, simulated, or predicted using various software or software procedures. Recent studies with numerical simulation models of insulators show that numerical techniques are valid for calculating the electric field and potential distribution on insulators, such as the boundary element method (BEM), the finite difference method (FDM), and the finite element method (FEM) [ 17 , 18 , 19 ].…”