Photovoltaic module glass crack detection method, device and apparatus and storage medium

Abstract

The invention discloses a photovoltaic module glass crack method, device and apparatus and a storage medium. The module includes: binarizing an image of a photovoltaic module to obtain a binarized image; extracting a contour of the binarized image to obtain an initial contour set C; filtering all initial contours according to the area of the outer rectangle and the number of corner points to obtain the contour set G of the photovoltaic module; traversing other initial contours except the photovoltaic component contours in the initial contour set C, obtaining an initial contour contained in anyof the photovoltaic component contours, and generating a candidate contour set S; detecting corner points of all candidate contours, and calculating an included angle between an adjacent corner pointvector of each candidate contour and an edge of a photovoltaic component contour to which each candidate contour belongs; when the number of included angles meeting a predetermined angle condition issmaller than a preset threshold ratio, judging that cracks exist in the glass of the corresponding photovoltaic module. Through the invention, glass crack detection of the photovoltaic module can berealized automatically, accurately and timely.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a method, device, equipment and storage medium for detecting cracks in glass of a photovoltaic module. Background technique [0002] Photovoltaic modules (or solar panels) are composed of solar cells or solar cells of different specifications cut by a laser cutting machine. Since the current and voltage of a single solar cell are very small, they are generally connected in series to obtain a high voltage, and then connected in parallel to obtain a high current, and then output through a diode (to prevent current return). Usually, these combined solar cells are packaged on a stainless steel, aluminum or other non-metal frame, and the front is covered with glass, and the back is provided with a back sheet for protection. [0003] When the photovoltaic module is subjected to severe impact (such as hail), the front glass may be broken. If the inspection and maintenance are not carried o...

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Problems solved by technology

[0003] When the photovoltaic module is subjected to severe impact (such as hail), the front glass may be broken. If the inspection and maintenance are not carried out in time, the photovoltaic module may not work normally

At present, the inspection in photovoltaic power plants is mainly manual inspection to check the faults in photovoltaic modules. This method has high labor costs, difficult operation and maintenance, and is not timely.

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