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Power transmission tower bolt displacement monitoring method based on image features

A technology of image features and transmission towers, applied in the direction of instruments, calculations, characters and pattern recognition, etc., can solve the problems of no unity and achieve the effect of avoiding major failures

Pending Publication Date: 2022-03-25
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the design of existing transmission towers, there is no unified standard for whether the bolted joints are hinged or rigid. Evaluating and Optimizing Design and Construction

Method used

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  • Power transmission tower bolt displacement monitoring method based on image features
  • Power transmission tower bolt displacement monitoring method based on image features
  • Power transmission tower bolt displacement monitoring method based on image features

Examples

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Embodiment Construction

[0043] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0044] Taking the transmission tower of a 220kV transmission line as the monitoring object, the image of the bolt area is tested, and the monitoring method of the bolt displacement of the transmission tower is explained accordingly.

[0045] Such as figure 1 As shown, the image feature-based transmission tower bolt displacement monitoring method of the present invention includes the following steps:

[0046] (1) Start the camera terminal to obtain the image of the bolt area of ​​the transmission tower;

[0047] (2) Construct bolt region image feature matrix B based on two-dimensional Gabor filter;

[0048] Specific steps are as follows:

[0049] (2.1) Denote the bolt region image as I(m,n), and...

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Abstract

The invention discloses a power transmission tower bolt displacement monitoring method based on image features, and the method comprises the steps: starting a camera terminal, and obtaining a power transmission tower bolt region image; constructing a bolt area image feature matrix based on a two-dimensional Gabor filter; sparse processing is carried out on the bolt area image feature matrix, and sparse principal components of the image feature matrix are extracted; constructing a monitoring statistic of the sparse principal component and an upper limit value of the monitoring statistic; and judging the bolt slippage state of the power transmission tower according to the monitoring statistical magnitude of the sparse principal component of the bolt area image feature matrix and the upper limit value thereof: when the statistical magnitude exceeds the upper limit value thereof, judging that the bolt of the power transmission tower slips, and at the moment, carrying out maintenance processing in time to avoid major faults. According to the method, the bolt displacement state of the power transmission tower can be diagnosed, and whether the bolt of the power transmission tower is displaced or not can be effectively and accurately detected, so that effective measures can be taken in time for the power transmission tower, and the operation reliability of the power transmission tower is improved.

Description

technical field [0001] The invention relates to the technical field of transmission line fault monitoring, in particular to a method for monitoring displacement of transmission tower bolts based on image features. Background technique [0002] Electric power plays a pivotal role in the process of economic and social development in our country. As the support of overhead wires, transmission towers are widely used in transmission lines. The carrier is an important part of the lifeline project, and its safety is directly related to the safe and stable operation of the transmission line. [0003] The transmission tower is mainly connected by section steel, steel pipe or combined cross-section rods. It is a towering and flexible rod system structure. During installation, the rods are mostly connected by bolts. For example, equilateral angle steel is connected by bolts to form a whole The transmission tower structure, the connection structure between the diagonal brace and the to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V20/52G06V10/44G06V10/77G06K9/62
CPCG06F18/2136G06F18/2135
Inventor 伍川姚德贵李清吕中宾刘泽辉张博夏晖叶中飞刘光辉宋高丽陶亚光炊晓毅杨晓辉谢凯魏建林马伦高超张世尧张宇鹏李梦丽陈钊任鹏亮
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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