【摘要】 为定量分析光伏项目的并网经济性,本文提出"自发自用、余电上网"运营模式下的发电上网率模型,以机组可输出功率、气候条件作为基础拟合机组典型日机组出力,运用最短距离聚类与关联度分析方法选取典型日负荷曲线。通过各季节典型日逐时光伏出力和用户负荷的动态对比,测算年发电上网率。在此基础上,本文构建了光伏发电项目全寿命期内的经济评价系统模型,并以某50 MW光伏大棚项目为实际应用案例来说明模型的合理性和有效应。结论表明了运用该方法测算的光伏项目并网经济性良好,可进行投资。更多还原

【Abstract】 In order to quantitatively analyze the grid connected economy of PV project,the annual rate of power generation to grid(ARPGG) model was established,with the operation mode of "self-generating and self-supply in chief and remaining electricity for grid. Unit output, climatic conditions were deemed as the basis for typical daily unit output.Nearest neighbor clustering & grey interconnect degree methods were applied to form typical daily load curve. By means of dynamic comparison between unit output and the user load, the annual rate of generation to network is obtained. On this basis, an economic evaluation system in the whole life cycle of photovoltaic power generation project was framed. To testify its rationality and usability, a 50 MW grid-connected solar greenhouse was taken as the practical application case. The results shows that model bears better adaption to reality and the grid-connected photovoltaic power generation project is of good economic performance and worthwhile to invest.更多还原