基于天气类型划分的单轴轨道式光伏跟踪策略  

Novel single-axis orbital solar tracking strategy based on weather type classification

作　　者：李芬 张德隆 毛玲 崔杨 LI Fen;ZHANG Delong;MAO Ling;CUI Yang(Shanghai University of Electric Power,Shanghai 200090,China;Meteorological Service Center of Hubei Province,Wuhan Hubei 430205,China)

机构地区：[1]上海电力大学,上海200090 [2]湖北省气象服务中心,湖北武汉430205

出　　处：《电源技术》2023年第11期1485-1489,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(51777120);上海绿色能源并网工程技术研究中心(13DZ2251900)。

摘　　要：针对光伏跟踪系统主要追踪太阳辐射的直接辐射分量,提出了一种新的天气类型划分方法,并且针对现有单轴光伏跟踪系统跟踪精度低的问题,提出了一种新型单轴轨道式光伏跟踪策略。首先,该天气分型方法通过分析各气象因子对太阳直接辐射分量的影响,选取大气透射率作为主要标准,能够有效筛选出直接辐射占主体的天气类型,为光伏跟踪模式的选择提供了有效参考;其次,该跟踪模式采用单轴旋转和轨道相结合的方式,使光伏组件沿着轨道旋转运动时保持最佳倾角有效提高跟踪效果。然后,利用国家气象信息中心的气象观测数据,与现有的天气分类方法及不同的跟踪模式对比,单轴轨道式跟踪模式能够显著提高发电量,并且具有较高的稳定性与跟踪精度,最后,分析了不同跟踪系统的性能差异及应用场景。Aiming at the direct radiation component of solar radiation tracked by photovoltaic tracking system,a new weather type classification method was proposed,and aiming at the problems of low tracking accuracy of existing single-axis photovoltaic tracking system and high cost of dual-axis photovoltaic tracking system,a new single-axis track photovoltaic tracking strategy was proposed.First of all,the impact of various meteorological factors on the direct solar radiation component was analyzed through the method of weather type classification,and the atmospheric transmittance was selected as the main standard,which could effectively screen out the weather types where the direct radiation accounts for the main part,thus providing an effective reference for the selection of photovoltaic tracking mode.Secondly,a combination of single-axis rotation and orbit was adopted to the tracking mode,so that the PV module could maintain the optimal tilt angle when rotating along the orbit,so as to maximize the tracking effect close to that of dual-axis.Then,using the meteorological observation data of the National Meteorological Information Center,the comparison with the existing weather classification method showed that the weather classification method had good discrimination and high precision in screening the direct radiation component.Compared with the existing single-axis tracking mode,the single-axis orbital tracking mode could increase the total solar radiation received,and had higher stability and tracking accuracy.Finally,the performance differences and application scenarios of different tracking systems were analyzed.

关 键 词：光伏发电 天气类型 太阳辐射 太阳跟踪 

分 类 号：TM615[电气工程—电力系统及自动化]