Research Of The Effect Factor On Insulation Leakage Current

The importance of the work safety of electricity is decided by the objective laws of power production, production characteristics and social effect. With the rapid development of the electric power industry, electric power system reforming and marketization process accelerated, the importance of the work safety of electricity is more outstandingAs one of China's national economy foundation industry of electric power industry, is China's other source of power from all walks of life, once the power supply shortage or produce interrupt phenomenon, will give people's living caused great inconvenience, serious can produce a series of secondary accident, to the people and the society life, work, and study order professions chaos, influence and the stability of the society, even cause extremely bad political influence.Regional power grid has formed to 500kV (or 330kV) voltage grade joint grid, give priority to network power plant through large-scale ultrahigh lines and connected to main structure, main structure results will power transmission to load centers step-down station, redistribution to all users. This is power grid modernization development pattern. As the electric power development of science and technology, partial failure caused by the possibility of grid collapse already negligible, but when there are large quantities of lines, tripping, losing electricity substation constantly inevitably to the serious consequences caused power grid collapse outer insulation filthy, large area is caused by this disastrous flash winding the causes of the accident.In recent years, based on the mechanism of pollution flashover, found leakage current and pollution flashover closely related to the development process of discharge is unclean, can comprehensively reflect the damp degree, insulators, degree of withstanding voltage and insulator shape factors, and facilitating consecutive measurements. Therefore, under the condition of damp the insulator impurity, leakage current research is of great significance.This article uses the artificial contamination test based on artificial simulation can be simulated based on the surface of product dirt, insulator dirt layer, the wet simulation are simulated on voltage. Although artificial contamination test cannot completely and transmission line running conditions, but artificially contamination test match can quickly get results of dirty lightning, get insulator pressure or unclean tolerance characteristics; And because conditions are controlled, experimental data has good repeatability, in the same test method in different laboratories under the experimental results obtained to approach each other comparable, results easier to analysis, etc. Therefore, artificial contamination test are widely used in research stain insulator characteristics and mechanism of flash winding for transmission lines, antifouling design, operation and maintenance and the division of pollution level provide technical reference. This paper established artificially stain insulator leakage current testing methods and the moist flash the purpose of test methods, established the artificially fog room, rated voltage insulator was studied under the leakage current and salt dense, grey dense, air relative humidity relationship, except the insulator leakage current the relationship between affecting factors.