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Visual detection method for surface contamination level of insulators based on map characteristics

A pollution level and detection method technology, applied in the direction of color/spectral characteristic measurement, analysis materials, instruments, etc., can solve the problem that the pollution level and its distribution on the surface of insulators are difficult to measure, and achieve the effect of convenient operation

Inactive Publication Date: 2019-04-16
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a visual detection method for insulator surface pollution level based on map features, which solves the problem that the online detection of insulator surface pollution level and its distribution in transmission lines is difficult to measure

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  • Visual detection method for surface contamination level of insulators based on map characteristics
  • Visual detection method for surface contamination level of insulators based on map characteristics
  • Visual detection method for surface contamination level of insulators based on map characteristics

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Embodiment 1

[0033] Embodiment 1 of the present invention: the present invention provides a visual detection method based on map features of insulator surface pollution level, hyperspectral imaging based on hyperspectral instrument is at nanoscale spectral resolution, can be in the ultraviolet to near infrared (200 ~ 2252nm) within the spectral coverage range, the object is continuously imaged with dozens to hundreds of wavelengths at the same time, and the spatial information, spectral information, and light intensity signal of the object are simultaneously obtained. At present, the target detection and classification technology based on hyperspectral remote sensing has been widely used in the fields of cultural relic damage detection, ground object classification, environmental monitoring, and external insulation aging analysis. Hyperspectral remote sensing uses the multi-band spectral signals of the target object, uses the spectral information in the hyperspectral cube image, and combine...

Embodiment 2

[0060] Embodiment 2: The content of this embodiment is basically the same as that of Embodiment 1. The difference is that step S2 in this embodiment adopts the least squares support vector machine (Least Squares Support Vector Machine, LSSVM) algorithm to establish a pollution level recognition model.

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Abstract

The invention discloses a visual detection method for the surface contamination level of insulators based on map characteristics. The method comprises the steps of acquiring hyperspectral images of the detected insulators, extracting the hyperspectral images of the insulators with different contamination levels, and building a contamination level recognition model; and carrying out recognition byusing the model to detect the contamination level, processing the obtained hyperspectral images to obtain the distribution position and scope of the contamination on the surface of an umbrella skirt,and finally achieving visual non-contact detection for the contamination distribution on the surface of the umbrella skirt. The visual detection method is convenient to operate, and the flashover voltage is reduced under a certain humidity condition when the umbrella skirt of the insulator is high in contamination level, thereby being applicable to live detection on site, providing a basis for cleaning insulators in a targeted manner, and meeting the requirements of transmission line insulator detection in China.

Description

technical field [0001] The invention relates to the field of operation state maintenance of power transmission and transformation equipment, in particular to a method for visually detecting the pollution level of the insulator surface based on map features. Background technique [0002] Insulator pollution flashover is an important factor threatening the safety of power transmission and transformation. Under a certain humidity condition, the flashover voltage of the insulator drops greatly after the dirt on the upper surface of the insulator absorbs moisture and forms a water film. Therefore, relevant personnel in the power system need to know the pollution level of the insulator surface in time, so as to formulate a targeted cleaning plan to ensure the safety of power supply and save manpower and material resources. [0003] At present, the pollution level of insulators is mainly detected through regular spot checks of salt density and dust density on the surface of insula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25G01N2201/12G01N2201/129G01N2201/1296
Inventor 郭裕钧张晓青张血琴刘凯吴广宁石超群刘毅杰邓琴张广全
Owner SOUTHWEST JIAOTONG UNIV
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