摘要
为保证光伏发电系统输出结果的准确性,开展了光伏发电参数的辨识研究。针对光伏发电系统,从光伏阵列及并网逆变器两个方面进行分析,找出影响光伏模型输出的关键参数,应用递推最小二乘法制定了光伏并网发电系统参数辨识方法,并利用光伏实测数据进行了光伏电池及光伏逆变器的参数辨识,最终得到一组较为准确的光伏发电系统参数。最后将解析计算、系统辨识下的仿真输出与光伏实测输出进行了对比,验证了光伏发电系统参数方法及结果的可行性,为进一步研究配电网分布式光伏接入配电网问题奠定基础。
In order to guarantee the output accuracy of the photovohaic power generation system, this paper conducts a research on photovoltaic parameters identification. In photovoltaic power generation system, two aspects of photovohaic （PV） array and the grid inverter are analyzed. The key parameters affecting PV model output are found. The parameter identification method for PV grid power system is made by using recursive least squares method. Then, the parameters of photovohaic PV cells and PV inverter are identified by using the measurement data. Finally, a set of more accurate parameters of photovohaic power generation system can be obtained. By comparing the simulation output of the parse calculation and system identification with the measured output of PV, the feasibility of parameter methods and results for photovohaic power generation system is verified, which can lay the foundation for further research on the access problems of distribution network distributed photovohaic.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2013年第5期116-120,共5页
Proceedings of the CSU-EPSA
关键词
光伏发电系统
仿真建模
参数辨识
最小二乘法
photovohaic power generation system
modeling and simulation
parameter identification
least squaremethod
