Transmission line area pollution severity characterization method

Abstract

The invention discloses a transmission line area pollution severity characterization method. By adopting the method, the influence of environmental factors to the surface pollution and flashover characteristic of an insulator can be considered more comprehensively. On the basis of the clean fog effect, the influence of electrical conductivity fog to flashover voltage is considered, and the action result and original surface salt deposit density are combined as equivalent salt deposit density which is used as the basis of pollution severity classification. According to the classification method of the invention, electrical conductivity fog weather which is more and more frequent recently is considered as an environmental characteristic, and insulation configuration is arranged on the basis. Therefore, the occurrence of flashover accidents caused by sudden bad weather can be effectively reduced, and the safe and stable operation of the power grid is enhanced.

Description

technical field [0001] The invention relates to a method for characterizing the pollution level of a transmission line area, which belongs to the technical field of high-voltage external insulation. Background technique [0002] In addition to the two basic forms of pollution, the conventional solid slow pollution accumulation and the highly conductive liquid pollution rapid accumulation, in inland areas, due to human activities (such as straw burning, setting off firecrackers, etc.) or natural factors (mountain fires, The high conductivity and high humidity weather conditions caused by acid rain, etc., superimpose the rapid fouling process on the basis of solid fouling, which is more likely to cause pollution flashover. Under such circumstances, if the results of the conventional slow fouling process and cleaning fog are still used, large errors will be caused, resulting in the inability to take preventive measures against possible flashovers in time, threatening the safety...

AI Technical Summary

Problems solved by technology

[0002] In addition to the two basic pollution accumulation forms of conventional solid slow pollution and highly conductive liquid pollution fast pollution, in inland areas, due to human activities (such as straw burning, firecrackers, etc.) or natural factors (mountain fires, Acid rain, etc.) caused by high conductivity, high humidity weather conditions, on the basis of solid fouling superimposed rapid fouling process, more likely to cause pollution flashover

Under such circumstances, if the results of the conventional slow fouling process and the effect of cleaning fog are still used, large errors will be caused, resulting in failure to take preventive measures for possible flashovers in time, threatening the safety and stable operation of the power grid

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