RESEARCH ON PHOTOVOLTAIC POWER GENERATION BAD POINT LOCALIZATION TECHNOLOGY BASED ON DRONE VISUAL CRUISE CONTROL

Huang Xuyong; Tang Biao; Qin Xiongpeng; Lin Zhongai; Xu Shoudong

doi:10.19912/j.0254-0096.tynxb.2023-1401

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (1) : 594-600. DOI: 10.19912/j.0254-0096.tynxb.2023-1401

RESEARCH ON PHOTOVOLTAIC POWER GENERATION BAD POINT LOCALIZATION TECHNOLOGY BASED ON DRONE VISUAL CRUISE CONTROL

Huang Xuyong¹, Tang Biao^1,2, Qin Xiongpeng³, Lin Zhongai¹, Xu Shoudong¹

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Abstract

After collecting images of photovoltaic modules through drones, wavelet scale decomposition technology is used to enhance the contrast and details of the images, and the visual cruise imaging results of drones are reconstructed. In order to eliminate noise that affects the accuracy of bad point localization, the median filtering method is used to filter the reconstructed image, while preserving edge information and image clarity. Using threshold binarization to segment the background and regions of interest in the image. By using the maximum inter class variance method to calculate the inter class variance of the background and region of interest obtained from segmentation, the optimal threshold value can be determined, thereby extracting the range of bad points in the region of interest separately. Finally, in order to more accurately locate specific bad point locations, an improved region growth method was introduced. By setting growth thresholds and gradient amplitude thresholds, the bad point locations present in photovoltaic power generation systems can be effectively located. The experiment proves that the proposed method has small positioning error for photovoltaic power generation bad points, high detection accuracy, and can effectively assist in maintaining power grid security.

Key words

unmanned aerial vehicles / PV power generation / remote sensing / bad point positioning / mean grayscale

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Huang Xuyong, Tang Biao, Qin Xiongpeng, Lin Zhongai, Xu Shoudong. RESEARCH ON PHOTOVOLTAIC POWER GENERATION BAD POINT LOCALIZATION TECHNOLOGY BASED ON DRONE VISUAL CRUISE CONTROL[J]. Acta Energiae Solaris Sinica. 2025, 46(1): 594-600 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1401

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