太阳光斑质量图像分析与校正系统研究

IF 1.204 Q3 Energy
Kashif Ali,  Song Jifeng
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引用次数: 0

摘要

摘要 定日镜是塔式太阳能热发电系统不可或缺的组成部分,优化定日镜的效率直接影响整体发电效果。本研究的重点是评估和提高定日镜的光学质量和跟踪精度,这是影响其聚光效率的关键因素。研究提出了一种基于光斑评估和校正技术的综合方法,用于评估和提高定日镜的性能。静态光学质量评估,这是一种评估定日镜光学质量的新方法。它包括通过图像处理捕捉定日镜的光斑形状,然后进行拟合并与理论模拟进行比较。这项技术为定日镜的质量提供了宝贵的见解。动态跟踪精度评估方案是为评估动态跟踪精度而设计的,通过分析定时捕捉的光斑中心点位置,计算出水平和垂直跟踪偏差角。这些角度可衡量定日镜的动态跟踪精度。为了提高动态跟踪精度,提出了一种定日镜跟踪误差修正方案。通过建立动态几何跟踪误差模型,可以推导出精确的跟踪角计算公式。建立了一个最小二乘数学模型,用于求解未知跟踪误差,便于精确计算误差角和后续修正。所提出的静态光斑质量和动态跟踪精度评估方法具有简单、精确和高效的特点。这些技术对塔式太阳能热发电系统具有实际意义。所设计的跟踪误差校正方案通过实验模拟和实际测量验证了其实用性。该方案的实施大大提高了塔式太阳能热发电系统的聚光发电效率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Research on Image Analysis and Correction System of Heliostat Spot Quality

Research on Image Analysis and Correction System of Heliostat Spot Quality

Research on Image Analysis and Correction System of Heliostat Spot Quality

Heliostats are integral components of tower solar thermal power generation systems, optimizing heliostat efficiency directly impacts overall power generation effectiveness. This research focuses on evaluating and enhancing heliostat optical quality and tracking accuracy, critical factors influencing their concentration efficiency. The study presents a comprehensive approach based on spot evaluation and correction techniques to assess and boost heliostat performance. Static Optical Quality Assessment, A novel methodology is introduced to appraise heliostat optical quality. It involves capturing heliostat spot shapes through image processing, followed by fitting and comparison with theoretical simulations. This technique provides valuable insights into heliostat mirror quality. Dynamic Tracking Accuracy Evaluation scheme is devised to evaluate dynamic tracking accuracy, by analyzing centroid positions of spots captured at regular intervals, horizontal and vertical tracking deviation angles are computed. These angles gauge heliostat dynamic tracking accuracy. To refine dynamic tracking accuracy, a heliostat tracking error correction scheme is proposed. A dynamic geometric tracking error model is formulated, enabling the derivation of a precise tracking angle calculation formula. A least squares mathematical model is established to solve for unknown tracking errors, facilitating accurate error angle calculation and subsequent correction. The presented static spot quality and dynamic tracking accuracy evaluation methods offer simplicity, precision, and efficiency. These techniques hold practical significance for tower solar thermal power generation systems. The devised tracking error correction scheme demonstrates practical effectiveness, validated through experimental simulations and real-world measurements. Implementation of this scheme substantially enhances concentrating power generation efficiency within tower solar thermal power generation systems.

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来源期刊
Applied Solar Energy
Applied Solar Energy Energy-Renewable Energy, Sustainability and the Environment
CiteScore
2.50
自引率
0.00%
发文量
0
期刊介绍: Applied Solar Energy  is an international peer reviewed journal covers various topics of research and development studies on solar energy conversion and use: photovoltaics, thermophotovoltaics, water heaters, passive solar heating systems, drying of agricultural production, water desalination, solar radiation condensers, operation of Big Solar Oven, combined use of solar energy and traditional energy sources, new semiconductors for solar cells and thermophotovoltaic system photocells, engines for autonomous solar stations.
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