Reliability assessment of aged SiR insulators under humidity and pollution conditions

被引：28
作者：
Ahmadi-veshki, Mohammad Reza [1 ]
Mirzaie, Mohammad [1 ]
Sobhani, Reza [1 ]
机构：
[1] Babol Noshirvani Univ Technol, Fac Elect & Comp Engn, Babol Sar, Iran
来源：
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2020年 / 117卷
关键词：
SiR insulators; Accelerated aging test; Pollution; Reliability; Risk estimation; Flashover probability; AC FLASHOVER VOLTAGE; COMPOSITE INSULATORS; LEAKAGE CURRENT; FOG; PORCELAIN; PERFORMANCE; RESPECT; STRINGS;
D O I：
10.1016/j.ijepes.2019.105679
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, the effect of different pollution and humidity variations on the reliability of aged Silicone Rubber (SiR) insulators are investigated. Firstly, four different types of 20 kV SiR insulators have been selected to evaluate the effect of different insulator profiles on Flashover Voltage (FOV). Then artificially accelerated aging tests with 1000 h duration have been conducted for the aging of insulators. Numerous FOV tests have been carried out on the aged SiR insulators under different humidity and pollutions. Next, the risk of insulators utilization under different ambient conditions have been calculated by using the experimental test's data. Finally, the reliability of insulators under different conditions have been calculated and a new mathematical model for the reliability in different humidity has been proposed. The effect of SiR insulator profiles on FOV has been studied and the results have been shown that lower FOV is related to insulators with thicker profiles as well.
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页数：8
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