Image Recognition of Photovoltaic Cell Occlusion Based on Subpixel Matching

Q3 Engineering EAI Endorsed Transactions on Energy Web Pub Date : 2024-04-12 DOI:10.4108/ew.5751

Yuexin Jin, Jinchi Yu, Xiaoju Yin, Yuxin Wang

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Abstract

INTRODUCTION: During the operation of large photovoltaic power stations, they are often shielded by dust and bird droppings, which greatly reduce the power generation and even cause fires. Analysis of PV cell occlusion image recognition accuracy based on sub-pixel matching. OBJECTIVES: In order to find the location of the pv cells, we use the method of subpixel image matching. Improve recognition accuracy. METHODS: When the power plant is running normally, taken the original image for photovoltaic power station as the original sample, and then using the subpixel gradient matching algorithm, to match the original image and find out that the minimum matching values. RESULTS: If the calculation results is greater than a specified threshold, When the calculated result is greater than the specified threshold, the power station is considered abnormal. CONCLUSION: The experimental process shows that this method can better judge the operating status of photovoltaic power station, and can find out the location of mismatched photovoltaic cells more accurately, and the calculation accuracy reaches sub-pixel level.

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基于子像素匹配的光伏电池遮挡图像识别

引言：大型光伏电站在运行过程中，经常会被灰尘和鸟粪遮挡，从而大大降低发电量，甚至引发火灾。基于子像素匹配的光伏电池遮挡图像识别精度分析。目的：为了找到光伏电池的位置，我们使用了子像素图像匹配的方法。提高识别精度。方法：在电站正常运行时，以光伏电站原始图像为原始样本，然后使用子像素梯度匹配算法，对原始图像进行匹配，并找出最小匹配值。结果：如果计算结果大于指定阈值，则认为该电站异常。结论：实验过程表明，该方法能更好地判断光伏电站的运行状态，能更准确地找出不匹配光伏电池的位置，计算精度达到亚像素级。

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来源期刊

EAI Endorsed Transactions on Energy Web Energy-Energy Engineering and Power Technology

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： With ICT pervading everyday objects and infrastructures, the ‘Future Internet’ is envisioned to undergo a radical transformation from how we know it today (a mere communication highway) into a vast hybrid network seamlessly integrating knowledge, people and machines into techno-social ecosystems whose behaviour transcends the boundaries of today’s engineering science. As the internet of things continues to grow, billions and trillions of data bytes need to be moved, stored and shared. The energy thus consumed and the climate impact of data centers are increasing dramatically, thereby becoming significant contributors to global warming and climate change. As reported recently, the combined electricity consumption of the world’s data centers has already exceeded that of some of the world''s top ten economies. In the ensuing process of integrating traditional and renewable energy, monitoring and managing various energy sources, and processing and transferring technological information through various channels, IT will undoubtedly play an ever-increasing and central role. Several technologies are currently racing to production to meet this challenge, from ‘smart dust’ to hybrid networks capable of controlling the emergence of dependable and reliable green and energy-efficient ecosystems – which we generically term the ‘energy web’ – calling for major paradigm shifts highly disruptive of the ways the energy sector functions today. The EAI Transactions on Energy Web are positioned at the forefront of these efforts and provide a forum for the most forward-looking, state-of-the-art research bringing together the cross section of IT and Energy communities. The journal will publish original works reporting on prominent advances that challenge traditional thinking.