光伏双面跟踪发电系统的发电特性研究

RESEARCH ON POWER GENERATION CHARACTERISTICS OF PV BIFACIAL TRACKING POWER GENERATION SYSTEM

本文采用PVsyst软件进行建模仿真,研究分析了双面光伏组件和水平单轴光伏跟踪器相结合的光伏发电系统(下文简称为“光伏双面跟踪发电系统”)的发电特性,并从地面覆盖率(GCR)、光伏组件安装高度、地面反射率这3个参数的角度分析了不同参数组合变换对光伏双面跟踪发电系统发电量增益比例的影响。结果表明:在保持其他参数不变的情况下,增加地面反射率或减小GCR值(即增加光伏阵列间距),均能有效增加光伏双面跟踪发电系统的发电量增益比例;既增加地面反射率又减小GCR值,能大幅增加光伏双面跟踪发电系统的发电量增益比例;而在保持其他参数不变的情况下,增加光伏组件安装高度仅能小幅提升光伏双面跟踪发电系统的发电量增益比例。最后给出了参数设置的综合建议,可为该类光伏发电项目的实际应用提供参考。

In this paper,PVsyst software is used for modeling and simulation,and the power generation characteristics of the PV power generation system combining bifacial PV modules and horizontal single-axis PV tracker(hereinafter referred to as“PV bifacial tracking power generation system”)are studied and analyzed.The influence of different parameter combination transformation on the power generation gain ratio of PV bifacial tracking power generation system is analyzed from the perspective of three parameters of ground coverage ratio(GCR),installation height of PV modules,and ground reflectivity.The results show that increasing ground reflectivity or decreasing the value of GCR(i.e.increasing the spacing between PV arrays)can effectively increase the power generation gain ratio of PV bifacial tracking power generation system while keeping other parameters unchanged.At the same time,increasing ground reflectivity and reducing the value of GCR can greatly increase the power generation gain ratio of PV bifacial tracking power generation system.While other parameters remain unchanged,increasing the installation height of PV modules can only slightly increase the power generation gain ratio of PV bifacial tracking power generation system.Finally,comprehensive suggestions on parameter setting are given,which can provide reference for the practical application of this kind of PV power generation project.