Estimation of power output of photovoltaic power generation on a ship using visual information

利用视觉信息估算船舶光伏发电的功率输出

• 批准号: 10650279
• 负责人: YAMAMOTO Shigehiro
• 金额: $ 2.24万
• 依托单位: Kobe University of Mercantile Marine
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650279/
• 关键词: Photovoltaic Power Generation; Diesel Generator; Estimation of Power Output; Solar Radiation; Atmospheric Transmittance; Image Processing; Visual Information; Ship; 雲; 視覚機能; 動画像

From the point of view of energy and environmental issues, basic researches on estimation of photovoltaic (PV) power have been carried out in order to solve the problems that occur to a PV-diesel hybrid system on a ship because of irregularity of the PV power. The results include :1.Estimation of PV power (solar irradiance) by image processing of clouds ; First, we have developed a basic method to judge weather conditions, that is "fine" or "cloudy, " in a few minutes by means of detection of clouds motion in the sky that mostly affects the PV power with machine vision. Next, a method to estimate solar irradiation over a few minutes has been considered. The method is based on analysis of the ratio of clouds that is going to cover the sun. Estimation of solar irradiation over a longer time, a few hours, has been investigated by using an all-sky camera, too. Furthermore, we have studied a basic method to discriminate between "thick" and "thin" clouds to estimate transmittance of the sunlight.2.Estimation of PV power (solar irradiance) considering the characteristics of solar irradiance ; We have devised a method to estimate daily solar irradiation by the estimation of the atmospheric transmittance from the theoretical equation of solar irradiance and observed solar irradiance. The experiment confirmed that the method precisely estimated the daily solar irradiation on more than half days in 2000.3.Control of the PV-diesel hybrid generation system ; A basic method to control the PV-diesel hybrid generation system using the short-time and long-time estimation of PV power mentioned above has been proposed.Future works are applied studies to combine above basic studies as a system.

从能源和环境问题的角度出发，针对船舶上的光伏-柴油混合动力系统由于光伏发电功率不均匀而出现的问题，开展了光伏发电功率估算的基础研究。结果包括：1。利用云图像处理估算PV功率（太阳辐照度）首先，我们开发了一种基本的方法来判断天气状况，即“晴朗”或“多云”，在几分钟内通过检测天空中云的运动，这主要是影响光伏发电的机器视觉。其次，考虑了一种估算几分钟内太阳辐照的方法。该方法是基于对将要覆盖太阳的云层比例的分析。在较长一段时间（几个小时）内的太阳辐射估计，也已经通过使用全天空照相机进行了研究。此外，我们还研究了一种区分“厚”云和“薄”云的基本方法，以估计太阳光的透过率。考虑太阳辐照度特性的光伏发电功率（太阳辐照度）估算根据太阳辐照度和观测太阳辐照度的理论方程，通过估算大气透过率，提出了一种估算日太阳辐照度的方法。实验证实，该方法能准确估算2000.3年半天以上的日太阳辐照量。光伏-柴油混合发电系统的控制提出了一种利用光伏发电功率的短时和长时估计来控制光伏-柴油混合发电系统的基本方法。今后的工作是将上述基础研究结合起来，形成一个系统的应用研究。

项目成果

山本茂広 他: "雲画像解析による太陽光発電電力予測に関する基礎的研究"神戸商船大学紀要 第二類 商船・理工学篇. 46. 97-101 (1998)

Shigehiro Yamamoto等人：“利用云图像分析进行太阳能发电预测的基础研究”神户商船大学通报，2级商船/科学与工程版46. 97-101（1998）。

片木威 他: "太陽高度による日射量予測に関する基礎研究"神戸商船大学紀要 第二類. 47. 107-110 (1999)

Takeshi Katagi 等：“基于太阳高度角的太阳辐射预测的基础研究”神户商业海洋大学通报，第 2.47.107-110 级（1999）

Jae-Shik Park et al.: "Operation control of photovoltaic/diesel hybrid generating system considering fluctuation of solar radiation"Journal of Solar Energy Materials & Solar Cells, Elsevier Science. 67. 535-542 (2001)

Jae-Shik Park 等人：“考虑太阳辐射波动的光伏/柴油混合发电系统的运行控制”Journal of Solar Energy Materials

Takeshi Katagi et al.: "Basic research on the estimation of instantaneous power of photovoltaic system by using camera images"Proceedings of 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion. 2. 2092-2095 (1998)

Takeshi Katagi等：“利用相机图像估算光伏系统瞬时功率的基础研究”第二届世界光伏太阳能转换会议暨展览会论文集。

片木威 他: "天気予報を用いた太陽光発電電力予測に関する基礎的研究"神戸商船大学紀要 第二類 商船・理工学篇. 46. 91-95 (1998)

Takeshi Katagi 等：“利用天气预报进行太阳能发电预测的基础研究”神户商船大学通报，2 级商船/科学与工程版 46. 91-95 (1998)。