污秽成分对XP-160绝缘子串交流闪络特性的影响

发布时间：2018-05-06 17:35

本文选题：绝缘子 + 污秽成分　；参考：《高电压技术》2014年07期

【摘要】：为研究不同污秽成分下绝缘子的污闪特性,以XP-160标准瓷绝缘子为研究对象,通过人工污秽试验测量了不同盐密、不同污秽成分下绝缘子的闪络电压和积分电导率,分析了盐密以及污秽成分对2者的影响,并得到了其污闪特性。结果表明:随着NaCl质量分数的减小和CaSO4质量分数的增加,绝缘子串闪络电压将明显提高;当可溶性物质污秽密度一定时,随着污秽成分中CaSO4质量分数的增加,积分电导率值减小;根据不同污秽成分对电导率的贡献,混合盐换算为等价的NaCl无法完全解释污秽成分对绝缘子污秽闪络电压的影响,因此在进行自然污秽测试时需考虑不同成分的物理化学特性以及对电弧发展影响等因素。该研究结果可供输电线路外绝缘的设计和选择参考。
[Abstract]:In order to study the flashover characteristics of insulators with different contamination components, the flashover voltage and integral conductivity of insulators with different salt density and different contamination composition were measured by artificial contamination test with XP-160 standard porcelain insulator as the research object. The effects of salt density and contaminants on the two species were analyzed and the flashover characteristics were obtained. The results show that the flashover voltage of insulator string will increase obviously with the decrease of NaCl mass fraction and the increase of CaSO4 mass fraction, and with the increase of CaSO4 mass fraction in the polluted component when the pollution density of soluble substance is constant, the flashover voltage of insulator string will increase obviously with the decrease of NaCl mass fraction and the increase of CaSO4 mass fraction. According to the contribution of different contaminants to conductivity, the equivalent NaCl can not fully explain the influence of polluted components on the flashover voltage of insulators. Therefore, the physical and chemical properties of different components and the influence on arc development should be taken into account in the test of natural contamination. The results can be used as reference for the design and selection of external insulation of transmission lines.
【作者单位】：重庆大学输配电装备及系统安全与新技术国家重点实验室;江苏方天电力技术有限公司;
【基金】：国家重点基础研究发展计划(973计划)(2009CB724503)~~
【分类号】：TM216

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