由于绝缘子是带电运行,绝缘子的位置会影响到绝缘子的自然积污。为研究绝缘子位置对绝缘子自然积污的影响,对安徽电网1 000 kV特高压淮南站里不同高度的避雷器绝缘子污秽进行采集。测量其等值盐密,等值灰密,局部表面电导率,污秽粒径以及污秽成分,进行多因素分析。试验结果表明,位置不仅影响绝缘子的污秽程度分布,还会影响到污秽的局部表面电导率,污秽成分及污秽粒径分布;绝缘子串两端的小颗粒污秽积累相较于中间更为严重;绝缘子位置越低,大颗粒污秽积累越严重;污秽成分和局部表面电导率均呈现沿串U形分布 ...
王黎明 +5 more
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叙述有关欧美聚合物绝缘子的现状及其优缺点,以及绝缘设计和试验方法等,同时介绍了各种聚合物绝缘子。最近在欧美喜欢用聚合物绝缘子代替瓷绝缘子,包括线路用、电器用和铁道接触网用聚合物绝缘子。据调查,在美国玻璃纤维加强塑料线路绝缘子已占市场20%左右 ...
doaj
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