研究目的
To propose a harmonic domain (HD) model of grid-connected photovoltaic (PV) generation systems for the assessment of grid integration impact and harmonic distortion.
研究成果
The proposed HD model allows for the direct determination of the periodic steady-state solution in networks with photovoltaic generation systems, accurately predicting individual harmonics and THD. The results indicate that PV units may produce harmonics exceeding permissible limits, highlighting the importance of harmonic analysis in grid-connected PV systems.
研究不足
The model's accuracy depends on the number of harmonics explicitly represented in the HD solution. Higher frequency resonances may require a larger harmonic spectrum for accurate representation.
1：Experimental Design and Method Selection:
The study involves modeling the PV system components in the harmonic domain and obtaining the periodic steady-state solution through matrix/vector operations.
2：Sample Selection and Data Sources:
The PV system parameters are based on standard test conditions (STC) with a PV array operating at maximum power point (MPP).
3：List of Experimental Equipment and Materials:
Includes PV array, DC/DC converter, DC/AC converter, and filter connected to the grid.
4：Experimental Procedures and Operational Workflow:
The PV system is modeled in the HD, and the solution is validated against PSCAD/EMTDC simulator results.
5：Data Analysis Methods:
The harmonic content and total harmonic distortion (THD) are analyzed to assess the system's performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
