高电压技术2018，Vol.44Issue(5)：1483-1489,7.DOI:10.13336/j.1003-6520.hve.20180430012
可溶物对绝缘子有效污秽度的影响
Effect of Soluble Contaminants on the Effective Pollution Degree of Insulators
蒋兴良 1刘又超 1刘要峰 2张欢 2李永福 2张志劲3
作者信息
- 1. 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,重庆 400030
- 2. 国网湖南省电力公司检修公司,长沙 410004
- 3. 国网重庆市电力公司电力科学研究院,重庆 401123
- 折叠
摘要
Abstract
In natural conditions, different kinds of compositions of contaminants will accumulate on the surface of insulators, and many of them are soluble contaminants, which have an influence on the flashover characteristics of insulators. Consequently, taking a standard LXY4–160 insulator is taken as research subject, we performed artificial tests in which insulators were contaminated with soluble contaminants NaCl, NaNO3, Na2SO4, KNO3, NH4NO3, Mg(NO3)2, MgSO4, and CaSO4. And the dissolution and pollution flashover characteristics were obtained. The research results show that the flashover voltage gradient of insulator is different under various soluble contaminants, as the conductivity is one of main causes. However, the same kind of soluble contaminants has similar effect on the flashover voltage gradient of insulators, the difference is less than 5％. In addition, by taking the flashover voltage gradient and percentage of different kind of soluble contaminant into account, the weight of each kind of soluble contaminant is obtained. As a result, the effective pollution degree of typical contaminant is put forward and the formula between flashover voltage gradient and effective pollution degree is presented. And the relative error is less than 5％ between the calculated value and the test value according to the formula. It has a reference value to assess the contamination level in different areas.关键词
绝缘子/污秽成分/可溶物/闪络电压梯度/等值盐密/有效污秽度Key words
insulator/contaminant composition/soluble contaminants/flashover voltage gradient/ESDD/effective pollution degree引用本文复制引用
蒋兴良,刘又超,刘要峰,张欢,李永福,张志劲..可溶物对绝缘子有效污秽度的影响[J].高电压技术,2018,44(5):1483-1489,7.
