Prediction and suppression for steel mill arc furnace influence to distribution networks power quality

Arc furnace is one of fluctuated power loads which greatly impact on voltage characteristics in power supply system.As an example,a new steel mill with some arc furnace decices connecting to a distribution network is investigated in this paper.The work characteristics of arc furnace devices are analyzed.The power quality indexes,such as voltage fluctuation,voltage flicker,harmonics component,are predicted.Some supression methods for harmonics are proposed.The calculation and analysis results show that the SVC device can suppress current harmonics and voltage fluctuation.