Photovoltaic power station hot spot detection and positioning method based on thermal infrared image

Abstract

The invention discloses a photovoltaic power station hot spot detection and positioning method based on a thermal infrared image. Pictures shot by a thermal imager carried by an unmanned aerial vehicle are infrared pictures, the resolution ratio is very low, the form of hot spots is usually very small, the accuracy of hot spot recognition is very low, and accurate positioning is difficult. Aimingat hot spot identification, the invention provides a UAV-YOLO model, a neural network residual error unit is added for fusion, characteristics of a front network are utilized to a greater extent, andhot spot characteristics of a far visual angle are learned; a YOLOv3 backbone network architecture is improved, and more hot spot appearance feature information can be learned in a front-end network.Aiming at hot spot positioning, the invention provides a geometric positioning algorithm, and the longitude and latitude of a hot spot are calculated through the longitude and latitude of an image center point, a yaw angle, the shooting height of an unmanned aerial vehicle and other information. According to the invention, the hot spot positioning precision is improved on the premise of ensuring the hot spot identification accuracy.

Description

technical field [0001] The invention belongs to the technical field of hot spot detection, deep learning, neural network and geometric latitude and longitude positioning of photovoltaic power station solar cells, and in particular relates to a method for hot spot detection and positioning of photovoltaic power station based on thermal infrared images. Background technique [0002] Solar energy is favored by more and more people with its advantages of cleanliness and pollution-free, and all countries in the world are actively developing solar power generation technology. However, the overall quality of photovoltaic power plants is not optimistic, and the decline in power generation of photovoltaic modules is relatively serious. In terms of construction scale, the larger the scale of the photovoltaic power generation project, the more complex the inspection work of the power station will be. It is difficult for manual inspection and detection to meet the requirements of inspec...

AI Technical Summary

Problems solved by technology

This type of method is commonly used in photovoltaic modules. The main purpose is to reduce the reverse voltage and current received by the shaded part of the cell through the bypass diode. The disadvantage is that the diode will consume power and reduce the output efficiency of the power station.

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