独立光伏系统的需求计算研究

his paper presents the demands calculation of solar cells and storage battery in stand-alone photovoltaic system ,and also describes the selection principle and installation precautions about stand-alone PV system. In this article, at first we list out data for calculation, and then introduce calculation formula about the monthly mean of daily total solar radiation which can reaches solar panel and can be used directly. Engineering Simplification formula has been proposed which can be used in practical application .The optimum tilted angle can be looked up in table without calculated. Afterwards we introduce load demand and battery capacity in stand-alone PV system. The calculation formula of solar panel capacity is listed and the parameters in it has been explained in detail. Series -Parallel of solar cells and storage battery and selection principle have been discussed. Finally, we discuss the installation precautions.