基于光照强度曲线微积分的光伏发电特性分析

PV Power Analysis Based on Light Intensity Curve and Differential and Integral Calculus

摘要: 基于区域代表气象站多年光照资源的观测数据，提出一种大型光伏基地发电出力特性分析方法和发电量计算方法。首先，通过METEOINFO光资源分析软件拟合得到一年中十二个月份典型日光照强度逐时曲线，然后采用曲线微分理论求取各月份典型日逐时发电出力特性曲线，最后运用曲线积分方法计算典型日发电量，进而得到各月份典型日发电量、全年累计发电量及年等效利用小时数。分析结论可以应用于发电功率预测和调度运行，解决大型光伏发电基地在电网调度中的预知性问题，以甘肃某大型光伏基地为例介绍了该方法的实施应用过程。

Abstract: Base on the regional representative of the weather station for many years of light observation data, this paper presented a method for analyzing output characteristics of large scale photovoltaic power generation base and calculation method of power generation. First, this paper obtained the typical daylight intensity curve by fitting the METEOINFO optical resource analysis software, sec-ondly, used differential theory to calculate the output characteristic curve based on the typical daylight intensity curve, at last, calculated power generation by using integral method. The con-clusion can be used to predict the generated output of large photovoltaic power generation base, operation and peaking demand calculation, to solve predictive issues of large-scale photovoltaic power generation base.