为估算光伏阵列的发电输出,提出一种能精确到分钟的光伏功率估算模型,适用于固定式和双轴跟踪式阵列。该模型首先根据测量的水平直射、散射辐照度、太阳的位置、组件的安装结构来计算组件表面吸收的辐照度,再结合组件和逆变器的实际效率,估算输出功率。该模型考虑了入射角修正、组件的衰减、灰尘带来的损失、法向直射辐射的修正。使用澳大利亚沙漠知识太阳能中心的数据验证该模型,并应用该模型研究双轴跟踪相对固定光伏阵列的发电量增益。
Abstract
A photovoltaic power estimation model accurate to the minute is proposed, which is suitable for fixed and dual-axis tracking PV arrays. Firstly, according to the sun position, the measured horizontal beam radiation, diffuse radiation, and the mounting structure, the total radiation absorbed by the PV array is calculated. Secondly, the output power is estimated based on the radiation and the efficiency of PV modules and inverters. The incidence angle modifier, the loss induced by degradation and dirt and the correction of DNI are considered in the model. The model is validated using the data of the desert knowledge Australia solar center （DKASC）. The model is applied to research the energy yield gain of dual-axis tracking array relative to fixed array.
关键词
光伏组件 /
发电功率 /
估算 /
辐照度 /
跟踪
Key words
PV modules /
generation power /
estimation /
irradiance /
tracking
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参考文献
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基金
江苏省碳达峰碳中和科技创新重点项目（BE2022027-4）
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