Method for detecting shading part of photovoltaic cell panel

Abstract

The invention discloses a method for detecting a shading part of a photovoltaic cell panel, belonging to the field of photovoltaic power generation. The detection method comprises the following steps of: 1, acquiring an actual image A of a photovoltaic cell array in a photovoltaic cell panel monitoring area; 2, performing gray processing on the actual image A, and comparing the actual image A subjected to gray processing with an original image B, wherein the original image B is a grayscale image in which a shading part does not exist, if the actual image A is the same as the original image B, then the shading part does not exist in the actual image, and then ending the operation, but if the actual image A is different from the original image B, then the shading part exists in the actual image A, and then taking the shading part in the actual image A as a shading area to segment the image. By the method, the shading part of the photovoltaic cell panel is accurately acquired, and the power generation efficiency is improved; and moreover, the using cost is reduced.

Description

technical field [0001] The invention relates to a photovoltaic power generation system, in particular to a method for detecting the shading part of a photovoltaic battery panel. Background technique [0002] In the popularization process of photovoltaic power generation system, the key lies in how to improve the utilization rate of solar energy. Photovoltaic power generation systems will inevitably be blocked by shadows such as trees, tall buildings, clouds, and birds during the working process. safe question. In partial shading conditions, the maximum power point tracking method is an effective method to increase the output power of photovoltaic panels. The current maximum power point tracking method makes the photovoltaic cell array always work near the maximum power point by assuming the shadow area, so as to improve the power generation efficiency. Therefore, the traditional maximum power point tracking method assumes that the shadow area cannot truly reflect the photo...

AI Technical Summary

Problems solved by technology

The current maximum power point tracking method makes the photovoltaic cell array always work near the maximum power point by assuming the shadow area, so as to improve the power generation efficiency. Therefore, the traditional maximum power point tracking method assumes that the shadow area cannot truly reflect the photovoltaic cells. shaded part of

[0003] In addition, in the traditional maximum power point tracking method, it is also necessary to collect the shading degree of all photovoltaic cells in the photovoltaic panel, which requires a large number of light intensity sensors to collect multiple signals, which undoubtedly increases the cost of photovoltaic power generation systems.

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