A Review of Aging Evaluation Methods for Composite Insulators

  • HUANG Chengcai ,
  • LI Yonggang
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  • School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, Hebei Province, China

Online published: 2014-09-07

Abstract

This paper analyzed the research status of aging evaluation for composite insulators at home and abroad; introduced seven kinds of commonly used aging evaluation methods and their advantages and disadvantages: hydrophobicity classification method, static contact angle method, scanning electron microscope (SEM) method, leakage current measurement method, chalking observation method, hardness test method and energy spectrum analysis method; mainly analyzed the characteristics and defects of four new method: Fourier transform infrared spectroscopy analysis method, ultraviolet imaging method, thermally stimulated current (TSC) method and nuclear magnetic resonance method, and presented relevant experiment results. The results show that: all the aging evaluation methods of composite insulators have their advantages, disadvantages and applicable conditions; the methods based on space charge test and conduction current test will become the main research direction of the aging evaluation for silicone rubber material in the future.

Cite this article

HUANG Chengcai , LI Yonggang . A Review of Aging Evaluation Methods for Composite Insulators[J]. Electric Power Construction, 2014 , 35(9) : 28 -34 . DOI: 10.3969/j.issn.1000-7229.2014.09.006

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