Research on cascade multi-level static var generation

Reactive power compensation may improve voltage quality and reduce the loss.The research on compensating reactive power using static compensation device is one of the most active areas in power system subject of the line.This paper firstly introducd the background of cascade multi-level static var generation,then it introduced the basic principles of SVG,absorbing reactive power from the system or applying reactive power for the system after that it introduced the advantages of cascade multi-level SVG and its structure was given.At last,it built cascade 7 H-bridge SVG model used SVPWM algorithm on saber,it gave the simulation results and anlysis.