The ANSVC low-voltage reactive power compensation device is suitable for automatic reactive power compensation in power grids with a frequency of 50Hz and a voltage of 0.4kV;It integrates reactive power compensation and grid monitoring, and can not only compensate for reactive power losses in the grid by switching capacitor banks, but also improveHigh power factor, reducing line loss, thereby improving the load capacity and power supply quality of the power grid; At the same time, it can also monitor the power grid in real-timeThree phase voltage, current, power factor and other electrical parameters.