Estimation of rime icing weight on composite insulator and analysis of shed configuration

Abstract

The possibility of insulator flashover would be higher with the increase in icing degree. Therefore, the method of monitoring the icing weight of the insulator is of vital importance. In this study, the estimation method of icing weight on composite insulator in rime icing was proposed. By quite a few experiments under different rime icing conditions, results showed good agreement between estimated value and measured icing weight. Therefore, the estimation method of icing weight proposed by this study was effective and may be used for predicting icing weight. Based on the estimation method, this study discusses the effect of key structural parameters of composite insulator under different rime conditions on icing weight. In order to better apply the composite insulator to electric transmission line in icing area, several suggestions on design optimisation of structural parameters are proposed.