摘要
在阐述光伏电池工作原理及其模型的基础上,构建了含直流-直流、蓄电池、直流-交流、电力逆变器及其双环控制模块的光伏发电(photovoltaic,PV)系统的仿真数学模型。通过对其稳定和暂态特性进行分析,进一步提出适合表述其微分方程的动态等效模型。以4节点系统为仿真对象,对该等效描述模型的有效性、泛化能力和参数的稳定性进行验证。验证结果表明,所提等效描述模型对数据样本的逼近效果较好,内插及外推特性良好,参数稳定性较好。
On the basis of expounding working principle of photovoltaic battery and the model,a simulation model for photovoltaic（PV） generation system with DC-DC,battery,DC-AC,electrical inverter and control module is established.By analysis on its stability and transient characteristics,the paper further proposes dynamic equivalent model which is suitable for expressing the differential equation.4-node system is taken as simulation object to verify effectiveness,generalization ability and parameter stability of the equivalent description model.The verification result shows that the approximation effect of above-mentioned equivalent description model on data sample is favorable,interpolation and extrapolation characteristics are good and parameter stability is also achieved.
出处
《广东电力》
2012年第3期57-64,共8页
Guangdong Electric Power
基金
国家自然科学基金资助项目(50977023)
关键词
光伏电池
光伏发电系统
负荷建模
分布式电源
广义负荷
等效模型
photovoltaic battery
photovoltaic power generation system
load modeling
distribution generation
general load
equivalence model
