State Grid 35kV substation project, which is a pilot project for transformation and upgrading under the power supply bureau. The on-site voltage exceeds the rated voltage and the voltage of the power system is too high. According to the user's working condition description, our company analyzes and formulates a reasonable solution for the user, and configures a high voltage SVG static var generator. The equipment adjusts the inductive and capacitive reactive power and reactive gap of the system according to the real-time changes of voltage and reactive power of the power supply bus, so as to achieve the purpose of voltage regulation and compensation and improve the power supply quality, reduce power loss.