Abstract：The application of thermal stimulated current (TSC) technique in quantitative- evaluating the serious aging condition of composite insulators has been researched. The composite insulators with different operating years from two manufacturers were used as test samples. The trap characteristics of samples were obtained via TSC technique and the relationship with were studied through SEM and FTIR testing. Experimental results show that, with the increase of operating life, the relative variation ratio of trap charges bears negative relevance with the linear correlation of curve. The trap charges will change obviously only if the aging is more serious, but the aging is not simply aggravated as the operating life increases. The main reasons to form more trap charges lie in that the new physical states and chemical structures are produced during the aging process of composite insulators. The thresholds of trap charge variation ratio for the two manufactures were confirmed respectively, indicating the serious aging of composite insulators.
梁英, 靳哲, 刘云鹏, 陈逸昕. 基于陷阱特性的运行复合绝缘子老化定量评估[J]. 电工技术学报, 2015, 30(18): 189-185.
Liang Ying, Jin Zhe, Liu Yunpeng, Chen Yixin. The Quantitative-Evaluation on the Aging Condition of Composite Insulators Based on Trap Characteristics. Transactions of China Electrotechnical Society, 2015, 30(18): 189-185.
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