TBBZ10 high-voltage reactive power automatic compensation device effectively solves the problems of capacitors not grouped, low power factor after compensation, large number of single-phase capacitors, and capacitor energy accumulation and explosion caused by untimely removal. The device is automatically switched in groups, and the compensated power factor can ensure that it is not less than 0.90 at any time. It will automatically switch off under light load without raising the voltage.Each group is generally composed of three groups of capacitors (at most six groups), each phase generally has only one capacitor, and each group is equipped with overcurrent and three-phase imbalance protection, which are very reliable for a single capacitor, and even if the protection fails, the energy of a single capacitor will not explode. And the capacity of each input is reduced, and the impact on the line is also greatly reduced.