Method for detecting shading part of photovoltaic cell panel

A technology of photovoltaic panels and photovoltaic cells, applied in image analysis, instruments, calculations, etc., can solve the problems of increasing the cost of photovoltaic power generation systems and not truly reflecting the shaded parts of photovoltaic cells, so as to prevent misjudgments and improve power generation Efficiency, the effect of reducing the cost of use

Inactive Publication Date: 2012-07-25
CHONGQING UNIV
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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.

Method used

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  • Method for detecting shading part of photovoltaic cell panel
  • Method for detecting shading part of photovoltaic cell panel
  • Method for detecting shading part of photovoltaic cell panel

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[0046] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0047] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0048] Such as figure 1 As shown, the detection method of the shading part of the photovoltaic panel consists of the following steps:

[0049] S1. Obtain the actual image A of the photovoltaic cell array in the photovoltaic cell panel monitoring area. In the first embodiment of the present invention, the camera installed directly in front of the photovoltaic power generation system collects the actual image of the photovoltaic cell array in t...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 段其昌隆霞段盼徐宏英唐若笠陈耀
Owner CHONGQING UNIV
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