复合绝缘子老化状态评估方法研究综述

A Review of Aging Evaluation Methods for Composite Insulators

分析了目前国内外关于复合绝缘子老化状态评估方法的研究现状,介绍了喷水分级法、静态接触角法、扫描电镜(scanning electron microscope,SEM)法、泄漏电流测量法、粉化观察法、硬度试验法、能谱分析法等7种常用老化评估方法的试验方法及优缺点,重点分析了傅里叶红外光谱分析法、紫外成像法、热刺激电流(thermally stimulated current,TSC)法、核磁共振法等4种新方法的特点与缺陷,并给出了相关试验结果。研究结果表明:现有的复合绝缘子老化状态评估方法各有优缺点及其适用条件,未来硅橡胶材料老化程度评估研究的主要方向或将集中在基于空间电荷测量和电导电流测试方面。

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.