基于统计分析的光伏并网发电系统最佳倾角的计算与实验研究  

Research on Calculation and Experiment of Optimum Tilt Angle in Photovoltaic Grid-connected Generation System Based on Statistics Analysis

作　　者：李潇潇[1,2] 赵争鸣[1] 田春宁 鞠振河 

机构地区：[1]清华大学电力系统国家重点实验室,北京100084 [2]辽宁太阳能研究应用有限公司,沈阳110034

出　　处：《电气技术》2012年第8期1-6,共6页Electrical Engineering

基　　金：台达环境与教育基金会重大项目资助(DREM200902);辽宁省财政厅资助(辽财指经2009631)

摘　　要：在设计光伏发电系统时,首先要解决的问题就是要确定光伏方阵的倾角,并由此估算照射到方阵面上的太阳辐射量。本文根据倾斜面上辐射量的计算理论建立了计算模型,提出对每天各倾角下倾斜面辐射量数据进行统计分析的方法得到年最佳倾角和月最佳倾角,设计了软件流程并使用Labview语言设计了计算软件,通过该软件可得到最佳倾角和总辐射量等数据。进一步搭建了人工倾角调节式光伏并网发电实验系统,通过长时间连续实验对比相同硬件环境下月最佳倾角和年最佳倾角下发电量的差异,与本文计算结果吻合。该计算方法可为光伏并网发电系统的优化设计提供算法支持和理论保障。In the design of photovoltaic power generation system, the first problem to be solved is to determine the inclination of the PV array, and thus to estimate the solar irradiation of the surface. According to the theory of the tilted surface radiation, the calculation model is built up in this paper. The method to get the optimum angle of year and month is proposed through statistical analysis of radiation data obtained on inclined plane at every angle. The software flow is designed and the software of calculation is developed using Labview language, through which the optimum tilt angle, the total amount of radiation and other data can be obtained. Further the manual angle adjustable grid-connected PV experimental system is built up. Through the continuous experiment for a long period time, the generation of PV arrays between the optimum month angle and the optimum year angle are compared under the same hardware environment. The experiment results are consistent with the calculation results in this article. This method can provide algorithm support and theoretical guarantee for the optimization design of grid-connected PV generation system.

关 键 词：太阳能 太阳辐射 最佳倾角 光伏并网发电系统 

分 类 号：TM615[电气工程—电力系统及自动化]