光伏发电传输最大功率储能优化建模仿真

摘要

The role of maximum power storage is to store and buffer power to ensure continuous and stable operation of system.However,the problem of the partial shading causes the array characteristics to produce multiple power peaks,which causes the system to work deviate from the maximum power point and bring about the fluctuation.This is why the maximum power energy storage optimization is so difficult.Regarding the issues above,the paper improves the traditional model to simulate the output characteristics of the PV array under partial shading and writes the algorithm using MATLAB language,which is based on the theoretical analysis and the engineering model of the PV cell.The comparison result of the experiment and simulation shows that the model can accurately describe the output characteristics of the PV array under partial shading.Then,we used the model to simulate and analyze the output characteristics of the PV array under the different light intensities,occlusion mode,shadow distribution,array pattern and drew some appropriate conclusions,which provides the basis for the optimization of the maximum power energy storage.%最大功率储能的作用是对电能进行存储与缓冲,保证系统持续稳定运行.然而局部阴影问题会使阵列特性产生多个功率峰值,导致系统工作偏离最大功率点,产生震荡,也是最大功率储能优化的难点所在.针对上述问题,通过理论分析并以光伏电池工程模型为基础,利用MATLAB语言编写算法,对传统模型进行改进,仿真局部阴影下光伏阵列的输出特性.实验和仿真对比结果表明改进模型能较准确地描述局部阴影下光伏阵列的输出特性.利用所建模型,对光伏阵列在不同光照强度、遮挡模式、阴影分布和阵列格局下的输出特性进行仿真和分析并得出相应结论,为光电传输最大功率储能优化提供依据.