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Method for monitoring operating state of electrical equipment

A technology of operating status and power equipment, applied in image data processing, instruments, gene models, etc., can solve problems such as fault diagnosis and positioning of unfavorable equipment, poor image contrast, and blurred visual effects

Inactive Publication Date: 2014-07-16
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, image processing techniques based on wavelet transform, homomorphic filtering, and blur enhancement processing have been widely used and achieved certain effects. The analysis effect leads to poor image contrast and blurred visual effect, which is not conducive to the diagnosis and positioning of equipment faults

Method used

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  • Method for monitoring operating state of electrical equipment
  • Method for monitoring operating state of electrical equipment
  • Method for monitoring operating state of electrical equipment

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Embodiment Construction

[0042] The method for monitoring the operating state of electric equipment according to the present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments.

[0043] figure 1 It illustrates the process of enhancing the infrared thermal image in an implementation manner of the method for monitoring the operating state of electric equipment according to the present invention. figure 2 The wavelet transform method in this process is illustrated.

[0044] Such as figure 1 As shown, in this embodiment, the method for monitoring the operating state of electric equipment includes the following steps:

[0045] Step 1: Obtain an infrared thermal image of the operating status of the power equipment

[0046] Step 2: Perform wavelet transform on the infrared thermal image for monitoring the operating status of electrical equipment in the substation. The wavelet transform uses orthogonal wavelet decomposition. In Matl...

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Abstract

The invention discloses a method for monitoring the operating state of electrical equipment. The method includes the step of acquisition of an infrared thermogram of the operating state of the electrical equipment; the step of wavelet transform, wherein wavelet transform is carried out on the infrared thermogram to extract low-frequency components and high-frequency components of the infrared thermogram; the step of homomorphic filtering, wherein homomorphic filtering is carried out on the low-frequency components; the step of fuzzy enhancement, wherein fuzzy enhancement is carried out on the high-frequency components; the step of wavelet reconstruction, wherein wavelet reconstruction is carried out on the low-frequency components having undergone homomorphic filtering and the high-frequency components having undergone fuzzy enhancement to obtain an enhanced infrared thermogram; the operating state of the electrical equipment is monitored according to the obtained enhanced infrared thermogram. According to the method for monitoring the operating state of the electrical equipment, the infrared thermogram of the electrical equipment becomes clear and accurate by being enhanced, and therefore the operating state of the electrical equipment can be better monitored.

Description

technical field [0001] The invention relates to a method for monitoring the operating state of electric equipment, in particular to a method for monitoring the operating state of electric equipment by using an infrared thermal image. Background technique [0002] According to statistics, nearly 90% of substation accidents are caused by power equipment failures, and about 50% of the faulty equipment has thermal anomalies in the early stage. The change of the thermal image can be used to judge the possible fault defects of electrical equipment, and it has been widely used in the live detection of substations. However, because infrared thermal imaging is affected by the environment and optical and electronic devices, the visual effect of infrared thermal images is blurred, and the resolution and contrast are low, which restricts the accuracy of fault diagnosis to a certain extent. Therefore, the infrared thermal image enhancement technology, which improves the quality of infra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T5/00G06N3/12
Inventor 孙岳张建盛戈皞许永鹏卢之男张忠蕾沈小军江秀臣
Owner STATE GRID CORP OF CHINA
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