With the increasing and frequent fluctuation of power distribution network and load

higher requirement to the capacity and rapidity of the reactive power compensation method is raised.In view of the existing reactive power compensation method has no way to meet the requirement of the distribution network and load to high reactive compensation capacity and rapidity

in this paper

a kind of high capacity and fast compensation method is proposed.The method adopts the coordination of the switching capacitor and the continuously adjustable capacitor.The former performs high capacity reference reactive power compensation to the system

while the latter performs fast and accurate fine tune reactive compensation

so to improve the power factor of the system keep the power factor of the high power distribution network or load at the target value.The simulation and design of the compensation system is finished by the use of Matlab/Simulink and both reasonableness and effectiveness of the high capacity fast reactive power compensation method is verified.