Cable detection device based on cable coating thermochromic and detection method thereof

Abstract

The invention discloses a cable detection device based on cable coating thermochromic and a detection method thereof. In the device, the cable coating comprises microcapsules which change color basedon temperature change; a data acquisition unit shoots the cable coating to generate image data; a neural network training unit is connected with the data acquisition unit to receive image data; the neural network unit establishes a neural network model to train an image sample; a correlation analysis unit is configured to generate a correlation coefficient between the color and the cable temperature; a principal component analysis unit extracts main characteristic components of the image data to reduce dimensions to generate principal components; a training unit trains an image sample based onthe principal component to obtain a relation curve of the cable state and the temperature; and a detection unit is connected with the neural network training unit to obtain a change curve of the cable state based on the color based on the correlation coefficient and the relation curve.

Description

technical field [0001] The invention belongs to the technical field of cable detection, in particular to a cable detection device based on temperature-sensitive discoloration of cable coating and a detection method thereof. Background technique [0002] With the development of social economy, the power load has been increasing in recent years. However, due to the constraints of economic costs, social environment, project cycle and other factors, the update speed of distribution network equipment cannot keep up with the growth rate of power load, resulting in power equipment exceeding The situation of load usage is becoming more and more frequent, safety accidents on the distribution network side occur frequently, and safety hazards are increasing day by day, thus putting forward higher requirements for the safe and reliable operation of the distribution network. Due to the limitation of geographical conditions and the public's misunderstanding of electromagnetic radiation, i...

AI Technical Summary

Problems solved by technology

[0002] With the development of social economy, the power load has been increasing in recent years. However, due to the constraints of economic costs, social environment, project cycle and other factors, the update speed of distribution network equipment cannot keep up with the growth rate of power load, resulting in power equipment exceeding The situation of load usage is becoming more and more frequent, safety accidents on the distribution network side occur frequently, and safety hazards are increasing, thus putting forward higher requirements for the safe and reliable operation of the distribution network

Due to the limitation of geographical conditions and the public's misunderstanding of electromagnetic radiation, it is difficult to expand the power system, and the power supply pressure is relatively high during the peak summer season

After actual research and analysis, among the many safety hazards, the insulation problem of the distribution network equipment, the overheating of the contacts in the switch cabinet, which leads to the high temperature rise of the whole cabinet, and the easy condensation of the switch cabinet are the main factors for the failure.

[0003] At present, the distribution network equipment mainly uses insulating sleeves made of silica gel to insulate the incoming and outgoing lines. However, the traditional sleeves have problems such as poor hydrophobicity and poor integration with the incoming and outgoing lines, which easily loses the insulation effect.

Its main manifestations are: (1) poor thermal conductivity, causing thermal aging problems, leading to cracking of the insulating sheath, and introducing safety hazards; (2) poor self-cleaning performance, resulting in electrostatic adsorption of dust, reducing the hydrophobicity of materials, and causing insulation problems ; (3) Poor maintainability

Although the above problem can be partially solved by using insulating coating, the material is prone to volatilization and failure, and it is difficult to visually detect the insulation damage problem in the distribution network

When the operation and maintenance personnel carry out on-site maintenance, they mainly rely on temperature measuring instruments to monitor the fault phenomenon and fault location. However, the traditional temperature measuring instruments have high cost and low reliability.

There is a lack of means for the operation and maintenance personnel to detect the fault with the naked eye at the first time, so it is imminent to study an overall solution to solve the problem

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