Predictive method for improving SVC speed in electric arc furnace compensation

The ability of static VAr compensators (SVC) to reduce the flicker caused by electric are furnaces and other variable VAr loads depends on their speed, which is limited by delays in reactive power measurement and thyristor ignition. In this paper, a predictive method is proposed to compensate the delay time and, hence, to improve the SVC performance. Previous samples of the load reactive power are used to predict its future values. Predicted VAr is then applied as a reference for reactive power compensation..