Method for identifying and positioning photovoltaic string in map

Abstract

The invention discloses a method for identifying and positioning a photovoltaic string in a map, which comprises the following steps of: acquiring a photovoltaic power station map image acquired and mapped by an unmanned aerial vehicle, and sequentially cutting the map image in an overlapped manner according to a certain size to obtain a series of images; according to a preset string recognition neural network model, feature extraction is carried out on the cut map images of the photovoltaic power station, and position coordinates of a string in each image are predicted and acquired; calculating position coordinates of the string in the complete map image; calculating the intersection-union ratio of the recognition result of the whole image, judging whether the obtained intersection-union ratio is larger than a threshold value or not, and when the obtained intersection-union ratio is larger than the threshold value, reserving a recognition frame with a large area; and displaying the final result through the server, and modifying the result through the server. The embodiment of the invention provides the method for identifying and positioning a photovoltaic string in a map, so as to solve the problem that a fault component cannot be accurately positioned in the prior art.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of operation and maintenance of solar cell power generation, and in particular to a method for identifying and locating photovoltaic strings in a map. Background technique [0002] During the whole life cycle of photovoltaic power plant operation, it is unavoidable to block the components caused by large particles of dust, bird droppings, leaves, etc. The local shadows caused by the blocking will not only reduce the power generation of the components, but also increase the local temperature of the components, resulting in hot spot effect . The generation of hot spots will not only affect the power generation efficiency of the photovoltaic system, but also cause permanent damage to the photovoltaic modules and bring fire hazards to the power station. According to statistics, a hot spot that occupies about 1 / 60 of the battery area will affect 1 / 3 of the power generation of the entire pho...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a photovoltaic string identification and positioning method in the map to solve the problem that faulty components cannot be accurately located in the prior art

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