电工技术学报2021，Vol.36Issue(10)：2061-2071,11.DOI:10.19595/j.cnki.1000-6753.tces.200276
基于暂态分析和系统辨识的光伏并网逆变器建模
Modelling of Commercial Grid-Connected PV Inverters Based on Transient Analysis and System Identification
摘要
Abstract
The modelling of grid-connected photovoltaic (PV) generation systems is the basis for studying their interaction with the grid. The transients of PV systems are determined by weather and grid conditions, as well as the characteristics of commercial inverters, whose topology and control algorithm are usually unknown. This hinders the analysis of the impacts that PV systems might have on the grid. For this purpose, a generic process for modelling PV systems based on transient analysis and system identification is presented. By viewing a PV system as a black-box without knowledge of its internal components, structure or control algorithm, the model was established through measured input-output data and system identification. Transfer functions were taken as the model structure based on classic control theories. A power hardware-in-the-loop system was used to verify the process by collecting instantaneous input-output data from the terminals of a commercial 3kW PV inverter. The results show that the developed model reproduces accurately the transients of the inverter under various disturbances, demonstrating the effectiveness of this generic modelling process.关键词
光伏逆变器建模/系统辨识/传递函数/功率硬件在环Key words
PV inverter modelling/system identification/transfer function/power-hardware-in- the-loop (PHIL)分类
信息技术与安全科学引用本文复制引用
翁公羽,茆美琴,张榴晨,Nikos Hatziargyriou..基于暂态分析和系统辨识的光伏并网逆变器建模[J].电工技术学报,2021,36(10):2061-2071,11.基金项目
This work is partially supported by the Natural Science Foundation of China(51677050)and the China Scholarship Council. （51677050）
