影响平板式光伏系统跟踪效果因素研究

通过对光伏组件平面辐照量、光伏组件特性的模拟计算,对北京、广州、拉萨三个地区的双轴跟踪和固定布置时平板式光伏发电系统性能进行了研究。同时对光伏系统在不同负载下,跟踪的意义进行了研究、讨论,结果发现:对于并网发电应用,跟踪系统在北京、广州、拉萨使用都能取得好的效果,其中以拉萨的效果最为明显;对均衡型负载跟踪系统在北京和拉萨使用都有一定的效果,而在广州效果较差;对夏季型负载跟踪系统在北京和广州都能较大的增加产出,而在拉萨效果却不好;对冬季型负载,跟踪系统在拉萨地区使用效果很理想,在广州和北京作用却不明显。

Effect of Sun Tracking on Flat Plate Photovoltaic Systems

Through mathematic simulation of the hourly irradiation on photovoltaic module plane, and photovoltaic modules performance, study was proceeded on output peroformance of double axes tracking and stationary modes PV module system in Beijing, Guangzhou and Lasa. At the same time, the effect of pv module tracking at different load applicaiton was discussed and investigated, result showed that for grid connected PV system, tracking can enhance the solar electric power greatly in Beijing, Guangzhou and Lasa, the most significant effect occurred in Lasa; for balanced load tracking system, there was obvious effect in Beijing and Lasa, but slight effect in Guangzhou; for summer type load, the effect of tracking fashion was very significant in Beijing and Guangzhou except Lasa, it can enhance output greatly and decrease cost of PV system; for winter type load, the tracking effect was significant in Lasa, but slight in Guangzhou and Beijing.