Analytical method and device of organic outer insulation surface appearance

Abstract

The invention provides an analytical method and an analytical device of organic outer insulation surface appearance, and relates to the technical field of an electrical system. The method includes steps of acquiring scanning data of an organic outer insulation surface; confirming a continuous wavelet function according to a four-order Daubechies wavelet; confirming a continuous wavelet transforming result of the scanning data, and converting to be a corresponding a discrete wavelet transform result; confirming the discrete wavelet function; performing multi-dimension analysis, generating low-pass and high-pass filters under different dimensions; performing decomposing treatment of a low-pass wave filter and a high-pass wave filter under the first dimension on the scanning data along the line direction, and forming a first two-dimensional matrix result; performing decomposing treatment of the low-pass wave filter and the high-pass wave filter under the first dimension on the two-dimensional matrix result along the row direction, and forming a second two-dimensional matrix result; confirming component data of the scanning data under the first dimension according to two matrix results; returning the step of forming the first two-dimensional matrix result according to the component data under the dimension until acquiring the component data under every dimension.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a method and device for analyzing the surface morphology of an organic external insulation. Background technique [0002] At present, due to the reverse distribution of energy regions and power load regions in my country, large-scale long-distance power transmission is a reasonable way to solve the reverse distribution of energy regions and power load regions. Among the transmission methods, overhead line transmission is the most important method. In the field of overhead line power transmission, a large number of insulators need to be applied. Insulators are insulating parts that are mechanically fixed and electrically isolated from high-voltage conductors. All insulating parts exposed to the atmosphere in high-voltage electrical equipment belong to high-voltage external insulation. Insulators are an important part of overhead transmission lines. The insulation of overhea...

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Problems solved by technology

In the current research on the surface hydrophobicity of composite insulators, the main focus is on the influence of the surface chemical composition on the hydrophobicity, but the research on the influence of the surface morphology on the hydrophobicity is not sufficient, mainly because of the organic external insulation. Due to the lack of and insufficient characterization methods for surface topography

Specifically, the existing characterization of the surface topography of organic external insulation mainly uses 1-dimensional (1D) profile topography to approximate or replace the actual 3-dimensional (3D) surface topography, which leads to practical analysis large time error

In addition, when using surface topography measuring equipment with different resolutions to measure the same sample, there will be a phenomenon that the measured surface topography results are closely related to the resolution of the measuring equipment, which leads to inconsistencies in the results obtained by different measuring equipment analysis, the reason is that when analyzing the surface topography obtained by actual measurement, the multi-scale characteristics of the surface topography are not taken into account

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