【摘要】 提出了一种光伏系统中对光伏阵列运行参数进行采集、分析、存储并显示的数据采集系统。采集系统通过控制负载侧电压,可间接控制光伏阵列的工作电压,从0～V_oc连续变化,通过传感器采集电压和电流信号,并通过RS-232口与上位机通讯,进行数据传输,上位机程序采用Labview工具开发,同时实现数据处理、存储和波形显示功能。通过对光伏阵列运行参数的连续检测,可分析光伏阵列在测试地区全年气候条件下的运行特性,也可用于分析、比较不同厂家生产的太阳电池组件性能,形成历史统计数据等,它提供了用最经济的方式全面替代Ⅰ-ⅤChecker功能的途径,可对光伏系统的优化设计、故障诊断等提供有力的支持。更多还原

【Abstract】 This paper deals with a method based on Labview for evaluation of the operating solar array to improve the sys- tem quality.By means of controlling the load magnitude and periodically scanning of the operating PV system to control the output voltage of solar array from 0～Ⅴ_OC,to capture the data of current and voltage at the same time.And then to transmit the acquired data via a 232 interface to an upper computer,which is developed in Labview and real-time com- pletes the data acquisition,storage and processing.The application of Labview provides a facility to study the solar array without miscellaneous peripheral equipment and needs only a few mends.It provides an approach to substitute a high- pricedⅠ-ⅤChecker or field tester and is quite helpful for system optimization and failure diagnosing.The analyses of some examples are given in this artiele.更多还原