1. Influence of pollution chemical components on AC flashover performance of various types of insulators
- Author
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Zhongyi Yang, Xingliang Jiang, Xingbo Han, Zhijin Zhang, and Jianlin Hu
- Subjects
Pollution ,Materials science ,flashover ,media_common.quotation_subject ,freely soluble pollution ,lcsh:QC501-721 ,Energy Engineering and Power Technology ,Insulator (electricity) ,K^+ ,Porcelain insulator ,Silicone rubber ,insulator contamination ,insulator flashover performance ,chemistry.chemical_compound ,silicone rubber insulators ,insulator flashover gradient ,CaSO(4) ,lcsh:Electricity ,SO(4)^2− ,Arc flash ,external insulation stability ,Electrical and Electronic Engineering ,Solubility ,Composite material ,Dissolution ,hydrophobicity ,Na^+ ,media_common ,glass insulator ,solubility ,ESDD contribution rate changes ,NH(4)^+ ,Silicone rubber insulators ,porcelain insulators ,silicone rubber insulator ,chemistry ,Cl^− ,equivalent salt deposit density ,porcelain insulator ,existing insulation designs ,NO(3)^− ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,Ca^2+ ,pollution chemical components ,lcsh:TK1-9971 ,insulator testing - Abstract
The pollution on insulators is composed of various chemical components, which threaten the stability of external insulation. However, the existing insulation designs have not taken this issue into consideration. This work aimed to study the influence of pollution chemical components on flashover performance of insulators with various materials. Flashover tests of porcelain, glass and silicone rubber insulators polluted by eight types of common contaminants were conducted. Based on the test data, the influence of chemical components and their solubility on equivalent salt deposit density (ESDD) and insulator flashover performance were analysed; and the electrical properties of different types of insulators were compared. Results show that the ESDD contribution rate changes with chemical components. The dissolution characteristic has a significant influence on the measurement of ESDD; slightly soluble contaminants need to be considered separately. The corresponding insulator flashover gradient for ions can be summarised as Cl^−
- Published
- 2019
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