Power transmission equipment fault diagnosis method

A technology for fault diagnosis and power transmission equipment, applied in image data processing, instruments, calculations, etc., can solve problems such as numerical instability, failure to provide fault confidence measurement, and reduced robustness, and achieve the effect of reducing fault judgment errors

Active Publication Date: 2016-10-12
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the problem with this type of detection method is that: on the one hand, using simple grayscale gradient operators such as sobel to locate edges, the robustness is reduced under the interference of light and background noise
On the other hand, when the j

Method used

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  • Power transmission equipment fault diagnosis method
  • Power transmission equipment fault diagnosis method
  • Power transmission equipment fault diagnosis method

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0044] Such as figure 1 As shown, the power transmission equipment fault diagnosis method of the present invention includes the following steps:

[0045] A: Establish a normal map library of transmission network equipment, including transmission wires, fittings and insulators. According to different voltage levels and different equipment models, the map information of each transmission network equipment under normal operation is collected, so as to establish a normal map library of the transmission network. The establishment of transmission network equipment map information should be as comprehensive and complete as possible and stored in designated equipment, such as upper computers, to facilitate subsequent equipment information maintenance. Among them, the map information of each transmission network equipment under normal operation status includes:

[004...

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Abstract

The invention discloses a power transmission equipment fault diagnosis method. The method comprises the following steps: A) establishing a normal image database of power transmission network equipment, wherein the power transmission network equipment comprises power transmission lines, fittings and insulators; B) collecting operation images of the power transmission network equipment, and carrying out pretreatment and image feature extraction on the collected operation images of the power transmission network equipment; and C) through an image comparison module, by utilizing the collected operation images of the power transmission network equipment and images in the normal image database of the power transmission network equipment, analyzing change and defect characteristics of the power transmission network equipment in the operation images of the power transmission network equipment, and image difference in the normal image database of the power transmission network equipment under normal state of the equipment, and carrying out fault identification and diagnosis on the power transmission equipment. The method can find possible fault hidden trouble of the power transmission lines in time through a structure template analysis and defect feature pattern matching combined method, thereby greatly reducing fault judgment error.

Description

technical field [0001] The invention relates to a fault diagnosis method for power transmission equipment, in particular to a fault diagnosis method for power transmission equipment based on structural template analysis and defect characteristic pattern matching. Background technique [0002] High-voltage overhead transmission lines generally use steel-cored aluminum stranded wires. Under the joint action of huge alternating tension, bending stress caused by vibration and long-term fatigue caused by rapid temperature changes, transmission lines cause material embrittlement, and surface damage is caused by lightning strikes and electrical flashovers, which inevitably lead to high voltage. Scattered strand defects in overhead transmission lines seriously threaten the conductor itself, its power transmission and transformation equipment and personal safety. [0003] Incidents of potential safety hazards in power grids have occurred from time to time in various places due to so...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/001G06T2207/10032G06T2207/20182G06T2207/20201
Inventor 郭祥富张小斐万迪明吴博耿俊成郭志民苑司坤刘枫琪平燕娜
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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