Relevant research shows that the potential of solar energy utilization varies greatly in different occlusion conditions. However, existing methods of assessing macro-city-scale solar roof utilization potential are not capable of considering the factor of mutual occlusion between urban buildings. To measure the overall solar photovoltaic utilization potential of the city, it is necessary to quantify the occlusion caused by the urban environmental building roof. This paper uses typical high-density blocks to quantify differences of occlusions on the building roof caused by urban blocks and building functions. Taking Wuhan as an example, a large number of urban blocks which form indicators were counted were selected as research samples, the data sets covers six types of morphological indicators to classify the urban blocks, and then the above blocks was modelled to simulate the solar radiation in order to obtain the values and combine with their morphological parameters, which will help to get roof solar occlusion factors by linear regression ways. The overall roof occlusion coefficient result of Wuhan is 0.079. By applying the above-mentioned occlusion coefficient to measure the solar energy potential of Hongshan District in Wuhan, the annual photovoltaic power generation was calculated to be able to reach 168.02GWh.

相关研究表明，在不同的遮挡条件下，太阳能利用的潜力差异很大。但是，现有的评估宏观城市规模的太阳能屋顶利用潜力的方法无法考虑城市建筑物之间相互遮挡的因素。要测量城市的整体太阳能光伏利用潜力，有必要对城市环境建筑屋顶造成的遮挡进行量化。本文使用典型的高密度块来量化由城市块和建筑功能引起的建筑物屋顶上的遮挡差异。以武汉市为例，选取大量计数指标的城市街区作为研究样本，数据集涵盖六种形态学指标，对城市街区进行分类。然后对上述块进行建模，以模拟太阳辐射，以获得数值并结合其形态参数，这将有助于通过线性回归方法获得屋顶的太阳遮挡因子。武汉市的总体屋顶遮挡系数结果为0.079。通过应用上述的遮挡系数来测量武汉红山区的太阳能潜力，计算出的年光伏发电量可达到168.02GWh。