适用不同尺度光伏阵列的数值建模方法

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适用不同尺度光伏阵列的数值建模方法

更新时间：2025-08-13

- 适用不同尺度光伏阵列的数值建模方法
- Automation of Electric Power Systems Vol. 38, Issue 16, Pages: 35-40(2014)
- 作者机构：
  
  中国农业大学信息与电气工程学院,北京市,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2014
- 稿件说明：
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SUN Hang. [J]. Automation of electric power systems, 2014, 38(16): 35-40.
DOI：

SUN Hang. [J]. Automation of electric power systems, 2014, 38(16): 35-40. DOI：

摘要

把光伏电池电路模型的离散计算结果作为基准数据源

利用数值计算方法实现对光伏阵列及各光伏单元的建模

详细阐述了该建模方法的实现机理及数学模型表达。针对光伏阵列运行中常遇到的阴影遮挡工况

建立了不同规模(单体光伏电池、组件、组串、阵列)的遮挡模型

并给出仿真结果。结果表明:在不同遮挡率下

单体光伏电池、组件的I-V输出特性曲线只有一个阶梯

P-V输出特性曲线仅有一个功率峰值;组串I-V输出特性曲线阶梯个数等于组件不同遮挡率个数

P-V输出特性曲线功率峰值个数不大于阶梯个数

并验证了两者之间的确切关系;光伏阵列的功率峰值个数与各组串的峰值个数关系复杂。该模型可适用于不同规模光伏阵列

仿真灵活

也容易与电力电子回路集成实现系统级仿真。

Abstract

A numerical modeling method of photovoltaic (PV) arrays and PV units is proposed. The method uses the discrete calculation results of PV cell circuit model as the basic data sources. The implementation mechanism of the method and the mathematical model are given in detail. In order to study the shadow shade conditions in PV array operations

shading models of different sizes (single photovoltaic cell

module

string

and array) are developed with simulation results. The results show that under different shading rates

the I-V output characteristic curve of a single PV cell or a module has only one step

and the P-V output characteristic curve has only one power peak. The step number of string’s I-V output characteristic curve is equal to the number of module’s different shading rates

but the power peak number is no more than the step number. The numerical relationship is tested as well. The relationship between the power peak number of PV array and the power peak number of each string is complex. The model is suitable for PV array with different scales and has good simulation flexibility. It can also be easily integrated with power electronic circuits to execute system simulations.

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