张血琴;范超;郭裕钧;刘凯;刘毅杰;吴广宁;

• 1:西南交通大学电气工程学院

摘要(Abstract)：

绝缘子是输电线路的重要组成元件,其污秽集聚特性会影响绝缘子的外绝缘性能,是外绝缘配置的依据之一。为研究不同材料绝缘子表面积污规律,探明绝缘子表面积污机理,通过人工气雾室对不同绝缘子材料进行人工积污试验,通过光学显微镜对表面污秽形貌进行观测,同时使用正射图像投影法对污秽粒径分布进行统计。研究结果表明,2种材料表面污秽颗粒粒径分布相似,玻璃绝缘材料表面污秽粒径略大于相同环境下复合绝缘子表面;随着电极两端电压增加,绝缘子表面污秽粒径均会增加;同时可以发现,表面污秽形貌分布存在明显区别:复合绝缘材料表面污秽形貌呈紧凑的链状结构,玻璃绝缘材料表面污秽结构呈松散的堆状结构。通过对污秽颗粒进行受力分析,基于热力学理论及气溶胶团聚理论,结合绝缘子表面电位测试结果,认为造成绝缘材料表面形貌不同的主要原因是电场环境中材料表面所带电荷量的不同以及表面憎水性不同。

关键词(KeyWords)： 污秽形貌;绝缘子材料;表面电位;污秽团聚

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51907168);; 中央高校基本科研业务费专项资金资助(2682017CX044,2682018CX19);; 国家电网公司科技项目(521104190007)~~

作者(Author): 张血琴;范超;郭裕钧;刘凯;刘毅杰;吴广宁;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1589

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