Reactive power compensation and harmonic control measures of electric arc furnace

Reactive power compensation and harmonic control measures of electric arc furnace

    Considering the power quality of the electric arc furnace from the aspects of reactive power compensation and harmonic control, solving these two problems has profound significance for improving the safe operation of the electric arc furnace. Without harmonics, reactive power has a fixed concept and meaning. In a circuit containing harmonics, there is a close correlation between harmonics and reactive power.

   First of all, adding reactive power compensation equipment to the electric arc furnace power grid, the reactive power compensation equipment can reduce the arc furnace load voltage fluctuation and other problems to a certain extent, and suppress the even-order harmonics of the electric arc furnace and a small amount of odd harmonics from the source. By detecting the harmonic components of the electric arc furnace power grid, the harmonics contained in the power grid are reduced, which fully meets the standards of the power grid.

    Composition of electric arc furnace power quality comprehensive compensation and harmonic control device. The comprehensive compensation system consists of a composite reactive power compensation device: a Havens electric filter capacitor and a Shanghai Viens electric filter reactance. The reactive power compensation part mainly compensates the reactive power required by the load to suppress voltage fluctuations and flicker; the harmonic compensation part mainly deals with the harmonic management of the power grid.

   Considering the influence of the composition of the two parts on the stability of the system and the effect of compensation, a reasonable layout is particularly important.

   The harmonics generated by the arc furnace will be absorbed by the [Havens Electric] reactors, which will not cause pollution to the grid side, and the resonance caused by the filter capacitor and the system impedance will not affect each module, and each module can run stably. , Haiwen Electric makes the system operation more stable and safe.