The invention discloses a method for testing natural
pollution characteristics of a high-
voltage external-insulation device. The method comprises the following steps of: acquiring to-be-tested natural
pollution on the high-
voltage external-insulation device; testing equivalent
salt deposit density and dust density to the to-be-tested natural
pollution; testing at least one of the to-be-tested natural pollution: pollution ingredient, pollution
granularity, pollution morphology, pollution thermal weight and pollution
infrared spectroscopy. In the scheme, the pollution level can be confirmed by testing equivalent
salt deposit density and dust density of the natural pollution; at least one of
ion, concentration, particle
granularity, topographic characteristics,
heat stability,
chemical bond information or functional group information included in the natural pollution can be obtained by testing at least one of pollution ingredient, pollution
granularity, pollution morphology, pollution thermal weight and pollution
infrared spectroscopy, so that the natural pollution characteristics on the device surface can be comprehensively tested.