Simulation and analysis of reactive power compensation control strategy for photovoltaic power generation system

In recent years, the problem of environment and energy shortage caused by the burning of fossil fuels is becoming more and more serious in the traditional thermal power generation. Photovoltaic power generation is rapidly developing as a new generation of green energy. However, the photovoltaic power generation has the characteristics of the cyclical change of the day and night alternation, and is particularly affected by the weather, so the photovoltaic power station is a variable and impact load for the power grid, which will cause the frequent fluctuation of the voltage of the grid. This will undoubtedly greatly affect the smooth operation of the power grid. Therefore, it is necessary to add reactive power compensation devices in the photovoltaic grid connected system. In this paper, the background of the reactive compensation device and the basic principle of its compensation are analyzed. SVG is selected from the development of the device, and the characteristics of SVG are analyzed. Finally, the function of reactive power compensation is realized by Simulink simulation.