Method for measuring contamination degree of surface of electric power insulator

Abstract

The invention discloses a method for measuring the contamination degree of the surface of an electric power insulator. The method comprises the following steps: scrubbing and sampling contaminants on the surface of the insulator with a cleaning and sampling cloth, weighing to obtain a mass difference m1 before and after sampling with the cleaning and sampling cloth, immersing the contaminant-contained sampling cloth after sampling into deionized water to dissolve soluble contaminants, measuring the conductivity of the resulting contaminant-containing deionized solution, converting to a soluble contaminant mass m2, converting to a salt deposit density, calculating to obtain the insoluble contaminant mass m1-m2, and converting to a dust density to obtain the contamination degree of the surface of the electric power insulator. Compared with the prior art, the method of the invention breaks measuring sequences of traditional measuring methods, uses drying and weighing to substitute filtering and drying in the traditional methods, and has the advantages of effective reduction of sampling and measuring errors, sampling and measuring period shortening, and convenience for grasp and popularization.

Description

technical field [0001] The invention relates to a technology for measuring the degree of pollution of external electric power insulation, in particular to a method for measuring the degree of pollution on the surface of a power insulator. Background technique [0002] Insulators are the most commonly used insulating fixtures on power overhead transmission lines. They are susceptible to industrial pollution or natural salinity, dust and other pollution when exposed to the air for a long time. When the pollution on the surface of the insulator reaches a certain level, under humid conditions, the pollution on the surface of the insulator will be dissolved by moisture, forming a conductive channel that shorts the insulator, resulting in a pollution flashover accident. In recent years, with the deteriorating atmospheric environment and increasing pollution, pollution flashover accidents in power systems have occurred frequently. According to statistics, pollution flashover accid...

AI Technical Summary

Problems solved by technology

However, in the test operation, using deionized water to clean the dirty surface of the insulator will easily cause the dirty solution to splash and cause measurement errors; to use filter paper to filter the dirty solution, it is inconvenient to filter the dirty solution in multiple times, and the filtration cycle is long, which is easy to settle due to air pollution cause error

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