Hydrophobicity grade judging method of silicone rubber insulator

A silicone rubber insulation and determination method technology, which is applied in the field of level determination, can solve the problems of power system safety and stable operation threats, pollution flashover resistance, and silicone rubber insulators' hydrophobic and hydrophobic migration characteristics.
CN105300844AActive Publication Date: 2016-02-03STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2016-02-03

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Abstract

The invention relates to a hydrophobicity grade judging method of a silicone rubber insulator. The hydrophobicity grade judging method comprises the following steps: acquiring an insulator image with water drops; carrying out noise filtering on the acquired image; dividing the image by applying a maximum between-cluster variance method to form a binaryzation image needed by a subsequent hydrophobicity judging research; extracting parameters including shape factors, fractal dimensions and the like from the binaryzation image to carry out hydrophobicity grading; and finally, grading the hydrophobicity of the composite insulator into three types including HC1-HC3, HC4-HC5 and HC6-HC7 by adopting a hydrophobicity grade grading method of a support vector machine, and finely dividing the hydrophobicity grade into seven grades from three types based on a multi-fractal grading method. According to the technical method provided by the invention, the hydrophobicity grades of the insulator can be relatively accurately distinguished, and relatively good evidences are provided for the pollution grades of the insulator.
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Description

technical field

[0001] The invention relates to a method for judging the hydrophobicity grade of a silicone rubber insulator, in particular to the judgment of the hydrophobicity grade of a silicone rubber insulator by using an image processing recognition technology. Background technique

[0002] Insulators in operation are affected by factors such as corona, flashover, and pollution for a long time. Especially under humid conditions, the external insulation strength of porcelain and glass insulators will decrease sharply, which will cause large-scale pollution flashover accidents in the power grid, and cause serious damage to the national economy. huge loss. Practice has shown that the use of silicon rubber insulators instead of traditional insulators (porcelain or glass insulators) can effectively curb the occurrence of pollution flashover accidents. The reason why silicone rubber insulators are widely used in anti-pollution transformation of power grids is because of the...

Claims

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