Research On Pollution Flashover Performances Of Different Types Insulators

The large areas of grid contamination flashover shows that a one-year cleaning method has been in the manual cleaning can not fundamentally prevent pollution flashover occurred, especially in recent years, with the rapid development of society, large-scale project construction and industrial development , external serious environmental pollution, equipment, dirt accumulation accelerated a sweeping year, let alone meet the requirements. To put an end to large-scale flashover must be out of the "year of a clean" way of working and thinking, more scientific drawing grid polluted area maps, in order to fundamentally solve the issue of Pollution Flashover grid. Currently, the new enterprise standard given polluted area mapping based on common ceramic insulators saturated salt concentration and the corresponding gray dense data, and the existing power grid used in the insulator models are more, in order to carry out a more reasonable external insulation configuration, you need different types of insulator pollution characteristics of product research, and general characteristics of porcelain insulators compare the product of pollution, and on this long string of insulators based on the effective creepage distance study.In this paper, the contamination of the same period of the different types of insulator surface contamination measurement, results in different types of insulator pollution than the plot and, based on different types of plot insulator pollution than the artificial contamination in the laboratory tests, a variety of insulators in the last and bottom surfaces such as uneven dirt accumulation under the conditions of flashover characteristics of comparison, ultimately arrived at a different type of insulator creepage distance of the effective coefficient of transmission lines provide the basis for external insulation configuration.