太阳能发电系统的最佳化设计

The optimum sizing of stand-alone photovoltaic systems

独立光伏发电系统需要进行最佳化设计。介绍了一种简明合理而又实用的最佳化设计方法。应用目前国外常用的倾斜面上太阳辐照量的计算公式,根据不同的蓄电池维持天数,应用能量平衡原理,得到相应的太阳电池方阵最佳倾角,然后通过循环计算,得出一系列太阳电池方阵和蓄电池容量的组合,再通过经济核算等,最后确定光伏系统的规模,编制了相应的计算机程序,并进行了实例计算。

Standalone photovoltaic systems should be of optimum sizing. This article introduces a concise, rational and practical method. The method adopts the calculating formula currently used abroad for determining the solar radiation on tilted surface. According to the days of autonomy and the principle of energy equilibrium, the optimum tilt angle of photovoltaic array is obtained first and then a series of capacity combinations of photovoltaic array and battery by means of cycle calculations. The size of photovoltaic systems is finally determined after further economic accounting. A relevant computer program is worked out and a calculated example presented.