Abstract: With the introduction of the "carbon peak and carbon neutrality" goals, photovoltaic power generation has experienced rapid development. However, the integration of distributed photovoltaic power generation systems into the user side can lead to a decrease in the power factor at the gateway meter. Taking a user who was assessed for a decrease in power factor as an example, we first analyze the reasons for the power factor drop after the integration of the photovoltaic power generation system. Secondly, by adding an SVG reactive power compensation device to the user"s original reactive power compensation scheme, the reactive power output of the SVG device is controlled to reduce the reactive power at the user"s gateway meter, thereby achieving the goal of improving the power factor. Finally, based on the measured data of the user"s load, the calculation process for the capacity of the SVG device is provided, and offering methods and ideas for similar situations in the future.