关键词: 太阳辐射特征, 太阳能利用潜力, 综合评价, 主成分分析

Abstract: By analyzing the observation and calculating the solar radiation in Ningxia, we found out that the solar radiation and sunlight in northern Ningxia are more than that in the south, besides, the direct radiation is more and the diffuse solar radiation is less, and the solar available days is more, thus the utilization potential of solar equipment is high. According to results of analyzing on the utilization of solar energy with principal component method, Yinchuan City of Ningxia is ranked at No.3, Guyuan of Ningxia at No.12 in cities of China. So the resource of solar energy in Ningxia is rich, and the condition for utilization is good, which are good for developing and using solar energy.

Key words: solar radiation, utilization potential of solar energy, integrated evaluation, Principal Component Method