雾霾期间绝缘子的积污特性研究

发布时间：2018-05-28 17:21

本文选题：绝缘子 + 雾霾　；参考：《中国电机工程学报》2017年07期

【摘要】：积污会使输电线路绝缘子发生污闪的风险增加。近年来雾霾天气频发,开展雾霾条件下绝缘子积污特性研究具有重要意义。针对雾霾期间绝缘子的积污特性,文中开展了不同类型绝缘子及试片在雾霾天气下的自然积污试验,测量了绝缘子在雾霾期间等值盐密的变化,并获得了绝缘子表面污秽微观形貌、粒径分布、无机元素组分及热重曲线等理化特性。结果表明,雾霾期间绝缘子表面等值盐密增速大于空气质量良好时的等值盐密增速;但是雾霾期间的高PM2.5浓度对绝缘子积污的影响有限;就粒径分布与无机元素组分而言,雾霾期积污污秽与长期自然积污污秽差异不大;试片表面光泽度随积污时间增加而下降,光泽度可用于短期少量积污的表征。
[Abstract]:Fouling increases the risk of pollution flashover on insulators of transmission lines. In recent years, due to frequent weather in haze, it is of great significance to study the fouling characteristics of insulators under haze conditions. In view of the fouling characteristics of insulators during haze, the natural fouling tests of different types of insulators and test films in haze weather are carried out, and the variation of equivalent salt density of insulators during haze is measured. The physical and chemical properties of insulator surface fouling, particle size distribution, inorganic element composition and thermogravimetric curve were obtained. The results show that the growth rate of equivalent salt density on insulator surface during haze is higher than that at good air quality, but the effect of high PM2.5 concentration during haze on insulator fouling is limited, and in terms of particle size distribution and inorganic element composition, The surface gloss of the sample decreased with the increase of the deposition time, and the glossiness could be used to characterize a small amount of fouling in the short term.
【作者单位】：电力系统及发电设备控制和仿真国家重点实验室(清华大学电机工程及应用电子技术系);
【分类号】：TM216

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