研究目的
To solve the problem of insufficient frequency regulation capacity caused by large-scale grid-connected photovoltaic (PV) generation by proposing active power-frequency droop control and virtual inertia control strategies.
研究成果
The proposed active power-frequency droop control and virtual inertia control strategies effectively enable single-stage PV generation to participate in grid frequency regulation, enhancing system stability.
研究不足
The study focuses on electromechanical transient analysis and may not cover all aspects of PV generation integration into the grid. The simulation is based on a specific model and may not account for all real-world variations.
1：Experimental Design and Method Selection:
The study proposes active power-frequency droop control and virtual inertia control strategies for electromechanical transient analysis.
2：Sample Selection and Data Sources:
The simulation is set up in PSCAD/EMTDC using a 3-machine and 9-node system.
3：List of Experimental Equipment and Materials:
PV array, inverter, transformer, line, load, and the grid are used.
4：Experimental Procedures and Operational Workflow:
The control structure of the inverter is modified to allow PV generation to actively participate in frequency regulation.
5：Data Analysis Methods:
Simulation results are analyzed to validate the control strategies.
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