Vacuum consumable electrode melting furnace is a typical nonlinear loads in the power supply system

which has serious fluence on power quality of power grid. In this paper

the specialized reactive power and harmonic comprehensive compensation device is designed for the harmonic and reactive characteristics of power supply system of vacuum consumable electrode melting furnace from Ningxia Orient Titanium Industry and the control strategy of compensation device controller is introduced. The main and auxiliary role of the device are reactive compensation and harmonic suppression

which can achieve comprehensive management of the voltage

reactive power and harmonics. It is shown by the field test result that the compensation device compensates reactive power and harmonics in vacuum consumable electrode melting furnace power-supply system fairly well and plays a direct and indirect function of energy-saving.