SVC device consists of a thyristor controlled reactor (TCR) and high pressure passive filter (FC) composition. Load control system according to changes in working conditions and the conduction angle of the thyristor reactors in series, thus changing the reactor supplied inductive reactive power, power systems play a smooth adjustment of reactive power role. Quick response SVC devices, flexible control, linear regulator features can perfectly suppress voltage fluctuation and flicker and improve the power factor, harmonic absorption, improve power quality, impact load compensation