研究目的
Investigating the effect of photovoltaic systems connected to the grid on grid parameters, specifically the increase in reactive power, and discussing solutions through the control of reactive and active power output from photovoltaic inverters to improve grid efficiency.
研究成果
The study concludes that grid-connected photovoltaic systems can satisfy customer electrical feed and save consumption costs, but may affect network efficiency. Appropriate control systems can mitigate these effects and make photovoltaic systems beneficial for the electrical grid.
研究不足
The study is limited to simulations using MATLAB Simulink and does not include physical experiments. The effectiveness of the control system in real-world applications may vary due to unforeseen grid conditions and photovoltaic system behaviors.
1：Experimental Design and Method Selection:
The study uses MATLAB Simulink software to simulate the control of active and reactive power output from a photovoltaic system connected to the grid.
2：Sample Selection and Data Sources:
A photovoltaic module output of 36 volt DC, 3300 W, with 1000 W/m2 of insolation level and temperature 25°C is used.
3：List of Experimental Equipment and Materials:
The setup includes a 400 volt DC boost output, grid nominal voltage of 220 volt AC and 50 Hz Frequency.
4：Experimental Procedures and Operational Workflow:
The control system is set to inject reactive power into the grid when the voltage is less than 220V and to consume reactive power from the grid when the voltage is greater than 220V.
5：0V. Data Analysis Methods:
5. Data Analysis Methods: The results are analyzed to show the efficiency of the control system under different generation levels.
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