中国电机工程学报2018，Vol.38Issue(1)：320-329,后插34,11.DOI:10.13334/j.0258-8013.pcsee.170655
硅橡胶复合绝缘子在不同可溶污秽成分下的闪络特性研究
Research on Flashover Performance of Silicone Rubber Insulators Polluted by Different Soluble Pollution Constituents
摘要
Abstract
With the development of social economy and automobile industry, the pollution constituents of outdoor insulation trends to be various. However, the flashover performance of silicone rubber insulator varies with the type of soluble pollution constituents, which has not been taken into consideration of most existing researches. This paper conducted experiment to study the flashover performance of silicone rubber insulator polluted by eight kinds of soluble salts (NaCl, CaSO4, MgSO4, KNO3, NaNO3, NH4NO3, Mg(NO3)2, Ca(NO3)2) respectively. Dipping method was adopted to pollute the samples and up-and-down method was applied to obtain the flashover voltage during the test. Based on the test results, the influence principles of soluble pollution constituents on insulator flashover performance were analyzed, and the influence rules were proposed. Research results indicate that, the flashover performance of silicone rubber insulator varies with the type of soluble pollution constituents, the relationship between flashover voltage gradient and equivalent salt deposit density (ESDD) can be characterized by negative power function;Under the same ESDD, NaCl corresponds to low flashover gradient while CaSO4 corresponds to the high one, the characteristic exponentn of nitrates are within 0.178 – 0.238;the corresponding flashover gradient of anions can be summarized as Cl-<NO3-<SO42-, and which is K+<Na+,NH4+<Ca2+ for cations of soluble nitrates;when silicone rubber insulators are polluted by simplex soluble constituents, the flashover gradient characteristicα can be expressed as the linear function ofn, which can be applied in outdoor insulation design to reduce the workload and cost of tests.关键词
硅橡胶/绝缘子/污秽成分/等值盐密/闪络电压梯度Key words
silicone rubber/insulator/pollution constituents/equivalent salt deposit density/flashover voltage gradient分类
信息技术与安全科学引用本文复制引用
蒋兴良,杨忠毅,韩兴波,张东东,K.L.WONG..硅橡胶复合绝缘子在不同可溶污秽成分下的闪络特性研究[J].中国电机工程学报,2018,38(1):320-329,后插34,11.基金项目
国家重点研发计划(2016YFB0900904) （2016YFB0900904）
国家留学基金. National Key R&D Plan(2016YFB0900904) （2016YFB0900904）
Funds of China Scholarship Council (CSC). （CSC）
